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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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Cutting galvanised steel tube
I have a need to cut quite a number of lengths of galvanised steel tube
(about 30) 25mm ID, 33.7mm OD e.g. http://www.fhbrundle.com/tube-14.htm A hacksaw is going to become boring for doing this quite quickly I think so I am looking for a faster alternative. Is this angle grinder territory? If so, can anybody suggest a suitable cutting wheel? Otherwise, is a more substantial saw like a cutoff saw required? |
#2
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Cutting galvanised steel tube
On Sat, 15 Jul 2006 22:44:52 +0100, Andy Hall had
this to say: I have a need to cut quite a number of lengths of galvanised steel tube (about 30) 25mm ID, 33.7mm OD e.g. http://www.fhbrundle.com/tube-14.htm A hacksaw is going to become boring for doing this quite quickly I think so I am looking for a faster alternative. Is this angle grinder territory? If so, can anybody suggest a suitable cutting wheel? Otherwise, is a more substantial saw like a cutoff saw required? I would use a power hacksaw. Then again, I have ready access to one! -- Frank Erskine |
#3
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Cutting galvanised steel tube
Andy Hall wrote in message ... I have a need to cut quite a number of lengths of galvanised steel tube (about 30) 25mm ID, 33.7mm OD e.g. http://www.fhbrundle.com/tube-14.htm A hacksaw is going to become boring for doing this quite quickly I think so I am looking for a faster alternative. Is this angle grinder territory? If so, can anybody suggest a suitable cutting wheel? Otherwise, is a more substantial saw like a cutoff saw required? You need one of these http://www.justoffbase.co.uk/s.nl;js...f81264c4d44b5b de0361d2662fd.e3eTaxePaNqNe34RcheRbxyMah90n6jAmljG r5XDqQLvpAe?sc=9&category= 552&it=A&id=6921 or this http://www.machinemart.co.uk/product...5&r=2041&g=106 anything using cutting disks in angle grinders or Circular Saw is a horrible noisy way of wasting time. Perhaps you could take your own advice and hire one. - |
#4
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Cutting galvanised steel tube
In article ,
Andy Hall wrote: I have a need to cut quite a number of lengths of galvanised steel tube (about 30) 25mm ID, 33.7mm OD e.g. http://www.fhbrundle.com/tube-14.htm A hacksaw is going to become boring for doing this quite quickly I think so I am looking for a faster alternative. Is this angle grinder territory? If so, can anybody suggest a suitable cutting wheel? If you have an angle grinder, stands to do right angle cuts are pretty cheap. A metal cutting disc should do it. Otherwise, is a more substantial saw like a cutoff saw required? -- *A person who smiles in the face of adversity probably has a scapegoat * Dave Plowman London SW To e-mail, change noise into sound. |
#5
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Cutting galvanised steel tube
The message
from Andy Hall contains these words: Otherwise, is a more substantial saw like a cutoff saw required? If you're near me you can come use my cutoff saw. I'm in Telford. -- Skipweasel Pay no attention to that man behind the curtain. |
#6
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Cutting galvanised steel tube
On Sat, 15 Jul 2006 23:06:48 +0100, Mark wrote
(in article ): Andy Hall wrote in message ... I have a need to cut quite a number of lengths of galvanised steel tube (about 30) 25mm ID, 33.7mm OD e.g. http://www.fhbrundle.com/tube-14.htm A hacksaw is going to become boring for doing this quite quickly I think so I am looking for a faster alternative. Is this angle grinder territory? If so, can anybody suggest a suitable cutting wheel? Otherwise, is a more substantial saw like a cutoff saw required? You need one of these http://www.justoffbase.co.uk/s.nl;js...f81264c4d44b5b de0361d2662fd.e3eTaxePaNqNe34RcheRbxyMah90n6jAmljG r5XDqQLvpAe?sc=9&category= 552&it=A&id=6921 Without stuffing this lot into the browser, I guess you mean the Sealey power hacksaw at the princely sum of £615 or this http://www.machinemart.co.uk/product...5&r=2041&g=106 Presumably relatively quiet. anything using cutting disks in angle grinders or Circular Saw is a horrible noisy way of wasting time. Perhaps you could take your own advice and hire one. Good thought, I'll take a look. I don't particularly want to acquire a lumbering great machine for metalworking in general. - |
#7
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Cutting galvanised steel tube
On Sat, 15 Jul 2006 23:01:11 +0100, Frank Erskine wrote
(in article ): On Sat, 15 Jul 2006 22:44:52 +0100, Andy Hall had this to say: I have a need to cut quite a number of lengths of galvanised steel tube (about 30) 25mm ID, 33.7mm OD e.g. http://www.fhbrundle.com/tube-14.htm A hacksaw is going to become boring for doing this quite quickly I think so I am looking for a faster alternative. Is this angle grinder territory? If so, can anybody suggest a suitable cutting wheel? Otherwise, is a more substantial saw like a cutoff saw required? I would use a power hacksaw. Then again, I have ready access to one! Didn't know they existed. Looks eminently sensible. |
#8
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Cutting galvanised steel tube
On Sat, 15 Jul 2006 23:15:23 +0100, Guy King wrote
(in article ): The message from Andy Hall contains these words: Otherwise, is a more substantial saw like a cutoff saw required? If you're near me you can come use my cutoff saw. I'm in Telford. Thank you for the kind thought. Bit far, though.... |
#9
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Cutting galvanised steel tube
The message
from Andy Hall contains these words: If you have an angle grinder, stands to do right angle cuts are pretty cheap. A metal cutting disc should do it. Any idea from where for a stand, Dave? Lidl had 'em a couple of weeks ago. Depending on how accurate you need to be - if it's just going into clamps then probably not spot on, then a hacksaw will get you through 30 tubes in about 30 minutes. -- Skipweasel Pay no attention to that man behind the curtain. |
#10
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Cutting galvanised steel tube
On Sat, 15 Jul 2006 23:47:27 +0100, Guy King wrote
(in article ): The message from Andy Hall contains these words: If you have an angle grinder, stands to do right angle cuts are pretty cheap. A metal cutting disc should do it. Any idea from where for a stand, Dave? Lidl had 'em a couple of weeks ago. Depending on how accurate you need to be - if it's just going into clamps then probably not spot on, then a hacksaw will get you through 30 tubes in about 30 minutes. It's for a structure involving Tubeclamps so I don't think that perfection is required. If I can get through a tube in about a minute or even two, it would be quicker than renting a saw. If it were 10 mins per cut, then that's another thing |
#11
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Cutting galvanised steel tube
Andy Hall wrote:
I have a need to cut quite a number of lengths of galvanised steel tube (about 30) 25mm ID, 33.7mm OD e.g. http://www.fhbrundle.com/tube-14.htm A hacksaw is going to become boring for doing this quite quickly I think so I am looking for a faster alternative. Is this angle grinder territory? If so, can anybody suggest a suitable cutting wheel? Otherwise, is a more substantial saw like a cutoff saw required? Hmmm! do you have a cross pull saw or similair? Put a grinder wheel on it and hey presto 30 cut bars in minutes. -- Sir Benjamin Middlethwaite |
#12
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Cutting galvanised steel tube
On Sat, 15 Jul 2006 23:52:56 +0100, The3rd Earl Of Derby wrote
(in article ): Andy Hall wrote: I have a need to cut quite a number of lengths of galvanised steel tube (about 30) 25mm ID, 33.7mm OD e.g. http://www.fhbrundle.com/tube-14.htm A hacksaw is going to become boring for doing this quite quickly I think so I am looking for a faster alternative. Is this angle grinder territory? If so, can anybody suggest a suitable cutting wheel? Otherwise, is a more substantial saw like a cutoff saw required? Hmmm! do you have a cross pull saw or similair? Put a grinder wheel on it and hey presto 30 cut bars in minutes. Yes I do, but it's a woodworking one used for fairly precise work. Interesting thought. I guess that the guard arrangements are different as well |
#13
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Cutting galvanised steel tube
Andy Hall wrote in message Without stuffing this lot into the browser, I guess you mean the Sealey power hacksaw at the princely sum of £615 Oh if you are buying entirely on price, here is a cheap, small, quiet one. http://www.axminster.co.uk/product-A...saw-366124.htm or this http://www.machinemart.co.uk/product...5&r=2041&g=106 Presumably relatively quiet. Perhaps you could take your own advice and hire one. Good thought, I'll take a look. I don't particularly want to acquire a lumbering great machine for metalworking in general. |
#14
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Cutting galvanised steel tube
Andy Hall wrote:
On Sat, 15 Jul 2006 23:52:56 +0100, The3rd Earl Of Derby wrote (in article ): Andy Hall wrote: I have a need to cut quite a number of lengths of galvanised steel tube (about 30) 25mm ID, 33.7mm OD e.g. http://www.fhbrundle.com/tube-14.htm A hacksaw is going to become boring for doing this quite quickly I think so I am looking for a faster alternative. Is this angle grinder territory? If so, can anybody suggest a suitable cutting wheel? Otherwise, is a more substantial saw like a cutoff saw required? Hmmm! do you have a cross pull saw or similair? Put a grinder wheel on it and hey presto 30 cut bars in minutes. Yes I do, but it's a woodworking one used for fairly precise work. Interesting thought. I guess that the guard arrangements are different as well Pick up a cheap model and use it for cutting disc,grinding disc,thats what I've done with this Taiwan effort. -- Sir Benjamin Middlethwaite |
#15
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Cutting galvanised steel tube
In message , Andy Hall
writes On Sat, 15 Jul 2006 23:47:27 +0100, Guy King wrote (in article ): The message from Andy Hall contains these words: If you have an angle grinder, stands to do right angle cuts are pretty cheap. A metal cutting disc should do it. Any idea from where for a stand, Dave? Lidl had 'em a couple of weeks ago. Depending on how accurate you need to be - if it's just going into clamps then probably not spot on, then a hacksaw will get you through 30 tubes in about 30 minutes. It's for a structure involving Tubeclamps so I don't think that perfection is required. If I can get through a tube in about a minute or even two, it would be quicker than renting a saw. If it were 10 mins per cut, then that's another thing Don't you have a local engineering firm who would do it for you for a few tens of squids? -- geoff |
#16
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Cutting galvanised steel tube
Andy Hall wrote:
I have a need to cut quite a number of lengths of galvanised steel tube (about 30) 25mm ID, 33.7mm OD e.g. http://www.fhbrundle.com/tube-14.htm A hacksaw is going to become boring for doing this quite quickly I think so I am looking for a faster alternative. Is this angle grinder territory? If so, can anybody suggest a suitable cutting wheel? Otherwise, is a more substantial saw like a cutoff saw required? angle grinder with steel cutting wheel will waltz through those. Not the tidiest cut though. |
#17
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Cutting galvanised steel tube
Andy Hall wrote:
If you have an angle grinder, stands to do right angle cuts are pretty cheap. A metal cutting disc should do it. Any idea from where for a stand, Dave? http://www.axminster.co.uk/product.a...sfile=1&jump=0 or http://tinyurl.com/ly9pd That should give fast cuts to a reasonable accuracy... -- Cheers, John. /================================================== ===============\ | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \================================================= ================/ |
#18
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Cutting galvanised steel tube - steel cutting wheels
The Natural Philosopher wrote:
angle grinder with steel cutting wheel will waltz through those. Not the tidiest cut though. Talking of which, has anyone tried those new diamond cutting blades for angle grinders that claim they can cut metal as well as masonry? I wondered what the cut quality and speed is like in metal, and also how well the blades stand up. -- Cheers, John. /================================================== ===============\ | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \================================================= ================/ |
#19
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Cutting galvanised steel tube
On Sun, 16 Jul 2006 01:16:57 +0100, raden wrote
(in article ): In message , Andy Hall writes On Sat, 15 Jul 2006 23:47:27 +0100, Guy King wrote (in article ): The message from Andy Hall contains these words: If you have an angle grinder, stands to do right angle cuts are pretty cheap. A metal cutting disc should do it. Any idea from where for a stand, Dave? Lidl had 'em a couple of weeks ago. Depending on how accurate you need to be - if it's just going into clamps then probably not spot on, then a hacksaw will get you through 30 tubes in about 30 minutes. It's for a structure involving Tubeclamps so I don't think that perfection is required. If I can get through a tube in about a minute or even two, it would be quicker than renting a saw. If it were 10 mins per cut, then that's another thing Don't you have a local engineering firm who would do it for you for a few tens of squids? That's a thought as well. In fact I found a supplier of tube who would do it. The only trouble is that it's one of those jobs where the space in which the final structure is being fitted is not quite even and square, and it has to fit that rather than the structure being perfectly square. Therefore, I think it is probably better cut as I assemble it. I'll need to measure the space again, though. |
#20
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Cutting galvanised steel tube
On Sun, 16 Jul 2006 03:53:52 +0100, John Rumm wrote
(in article ): Andy Hall wrote: If you have an angle grinder, stands to do right angle cuts are pretty cheap. A metal cutting disc should do it. Any idea from where for a stand, Dave? http://www.axminster.co.uk/product.a...der+stand&u s er_search=1&sfile=1&jump=0 or http://tinyurl.com/ly9pd That should give fast cuts to a reasonable accuracy... Thank you John. This looks like a reasonable solution. Of course it creates the next quandary. I only have a 125mm angle grinder at present. I suspect that that would not cut completely through a tube of 34mm OD without rotating the tube (although I suppose I can do that. So outlay for large stand = £30, 230mm angle grinder (say Bosch) at £86 - total £116. OTOH, I do get a bigger angle grinder that can be used for other things. OTOOH, I don't have much other need for a large angle grinder Entry level cutoff saw seems to be £100 or £117 for apparently better (Jet) one from Axminster. Trouble is that it's physically quite large (needs to be stored) and I can't think of many other applications where I want to cut length of metal.. Rental prices on bench cut off saws seem to vary between £35 and £45, but not clear whether this includes the disc, whether there's a deductable for use or whether one has to buy their discs at some inflated price. Then there's the hacksaw :-) |
#21
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Cutting galvanised steel tube
The message
from Andy Hall contains these words: Then there's the hacksaw :-) Get some 18TPI bimtal blades and you'll romp through it. -- Skipweasel Pay no attention to that man behind the curtain. |
#22
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Cutting galvanised steel tube
The message
from Andy Hall contains these words: If I can get through a tube in about a minute or even two, it would be quicker than renting a saw. I can do a 30x30x5 angle in about 30 seconds. -- Skipweasel Pay no attention to that man behind the curtain. |
#23
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Cutting galvanised steel tube
On Sun, 16 Jul 2006 01:53:38 +0100, The Natural Philosopher wrote:
|Andy Hall wrote: | I have a need to cut quite a number of lengths of galvanised steel tube | (about 30) | | 25mm ID, 33.7mm OD e.g. http://www.fhbrundle.com/tube-14.htm | | A hacksaw is going to become boring for doing this quite quickly I think so I | am looking for a faster alternative. | | Is this angle grinder territory? If so, can anybody suggest a suitable | cutting wheel? | | Otherwise, is a more substantial saw like a cutoff saw required? | | | | | |angle grinder with steel cutting wheel will waltz through those. Not the |tidiest cut though. I tend to use Angle Grinders for rough hacking work on metal. Dressing the flash off the tube might well take as long as hack sawing would have done in the first place, depending on how neat/accurate a result you need. -- Dave Fawthrop dave hyphenologist co uk Google Groups is IME the *worst* method of accessing usenet. GG subscribers would be well advised get a newsreader, say Agent, and a newsserver, say news.individual.net. These will allow them: to see only *new* posts, a killfile, and other goodies. |
#24
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Cutting galvanised steel tube
"Andy Hall" wrote in message ... I have a need to cut quite a number of lengths of galvanised steel tube (about 30) 25mm ID, 33.7mm OD e.g. http://www.fhbrundle.com/tube-14.htm A hacksaw is going to become boring for doing this quite quickly I think so I am looking for a faster alternative. Is this angle grinder territory? If so, can anybody suggest a suitable cutting wheel? Otherwise, is a more substantial saw like a cutoff saw required? Andy, If you are in traveling distance of Bromley you are welcome to use my power hacksaw - it would eat the job. AWEM |
#25
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Cutting galvanised steel tube - steel cutting wheels
On Sun, 16 Jul 2006 03:56:23 +0100, John Rumm wrote:
The Natural Philosopher wrote: angle grinder with steel cutting wheel will waltz through those. Not the tidiest cut though. Talking of which, has anyone tried those new diamond cutting blades for angle grinders that claim they can cut metal as well as masonry? I wondered what the cut quality and speed is like in metal, and also how well the blades stand up. Yes. It transforms a cheap angle grinder into a useful tool. The blades don't last for ever but they do last for a very long time. More usefully they don't wear down smaller like abrasive cut-off discs, which results in making the disc too small (in diameter) to work. Also they make a magnitude less sparks and much less debris. I also use a power hacksaw (Bosch £100 job) which takes a variety of blades [1] including ones intended to cut steel. The trick is to keep the tool firmly against the pipe no matter what, and the blade lubricated. [1] Wood, Ally, Green Wood, -- Ed Sirett - Property maintainer and registered gas fitter. The FAQ for uk.diy is at http://www.diyfaq.org.uk Gas fitting FAQ http://www.makewrite.demon.co.uk/GasFitting.html Sealed CH FAQ http://www.makewrite.demon.co.uk/SealedCH.html Choosing a Boiler FAQ http://www.makewrite.demon.co.uk/BoilerChoice.html Gas Fitting Standards Docs he http://www.makewrite.demon.co.uk/GasFittingStandards |
#26
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Cutting galvanised steel tube
On Sun, 16 Jul 2006 08:06:16 +0100, Andrew Mawson wrote
(in article ): "Andy Hall" wrote in message ... I have a need to cut quite a number of lengths of galvanised steel tube (about 30) 25mm ID, 33.7mm OD e.g. http://www.fhbrundle.com/tube-14.htm A hacksaw is going to become boring for doing this quite quickly I think so I am looking for a faster alternative. Is this angle grinder territory? If so, can anybody suggest a suitable cutting wheel? Otherwise, is a more substantial saw like a cutoff saw required? Andy, If you are in traveling distance of Bromley you are welcome to use my power hacksaw - it would eat the job. AWEM Thank you kind sir. Unfortunately I'm on the opposite side of London... :-( |
#27
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Cutting galvanised steel tube
"Andy Hall" wrote in message ... I have a need to cut quite a number of lengths of galvanised steel tube (about 30) 25mm ID, 33.7mm OD e.g. http://www.fhbrundle.com/tube-14.htm A hacksaw is going to become boring for doing this quite quickly I think so I am looking for a faster alternative. Is this angle grinder territory? If so, can anybody suggest a suitable cutting wheel? Otherwise, is a more substantial saw like a cutoff saw required? ================================== Hire one of these from your local hire shop: http://www.screwfix.com/app/sfd/cat/...90486&ts=34592 You might pick one up cheaply on Ebay. Cic. |
#28
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Cutting galvanised steel tube
On Sun, 16 Jul 2006 08:29:12 +0100, Cicero wrote
(in article ): "Andy Hall" wrote in message ... I have a need to cut quite a number of lengths of galvanised steel tube (about 30) 25mm ID, 33.7mm OD e.g. http://www.fhbrundle.com/tube-14.htm A hacksaw is going to become boring for doing this quite quickly I think so I am looking for a faster alternative. Is this angle grinder territory? If so, can anybody suggest a suitable cutting wheel? Otherwise, is a more substantial saw like a cutoff saw required? ================================== Hire one of these from your local hire shop: http://www.screwfix.com/app/sfd/cat/...90486&ts=34592 You might pick one up cheaply on Ebay. Cic. Ah. I didn't know these things existed (at least not at that size) . I've seen pipe vices in use when threading, but not this. HSS have the cutters for £8 a day and the vice for £12. Thanks for that, Cic. Presumably all I then need is some brute force and ignorance. |
#29
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Cutting galvanised steel tube
"Andy Hall" wrote in message ... On Sun, 16 Jul 2006 08:29:12 +0100, Cicero wrote (in article ): "Andy Hall" wrote in message ... I have a need to cut quite a number of lengths of galvanised steel tube (about 30) 25mm ID, 33.7mm OD e.g. http://www.fhbrundle.com/tube-14.htm A hacksaw is going to become boring for doing this quite quickly I think so I am looking for a faster alternative. Is this angle grinder territory? If so, can anybody suggest a suitable cutting wheel? Otherwise, is a more substantial saw like a cutoff saw required? ================================== Hire one of these from your local hire shop: http://www.screwfix.com/app/sfd/cat/...90486&ts=34592 You might pick one up cheaply on Ebay. Cic. Ah. I didn't know these things existed (at least not at that size) . I've seen pipe vices in use when threading, but not this. HSS have the cutters for £8 a day and the vice for £12. Thanks for that, Cic. Presumably all I then need is some brute force and ignorance. ============================== Not much effort needed because these are the right tools for the job. Don't force the job - make small adjustments to the cutter to get a clean cut. You'll probably still need your angle grinder to adjust the final fitting angles. Cic. |
#30
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Cutting galvanised steel tube - steel cutting wheels
On Sun, 16 Jul 2006 08:24:22 +0100, Andy Hall wrote:
On Sun, 16 Jul 2006 08:12:59 +0100, Ed Sirett wrote (in article .uk): On Sun, 16 Jul 2006 03:56:23 +0100, John Rumm wrote: The Natural Philosopher wrote: angle grinder with steel cutting wheel will waltz through those. Not the tidiest cut though. Talking of which, has anyone tried those new diamond cutting blades for angle grinders that claim they can cut metal as well as masonry? I wondered what the cut quality and speed is like in metal, and also how well the blades stand up. Yes. It transforms a cheap angle grinder into a useful tool. The blades don't last for ever but they do last for a very long time. More usefully they don't wear down smaller like abrasive cut-off discs, which results in making the disc too small (in diameter) to work. Also they make a magnitude less sparks and much less debris. I also use a power hacksaw (Bosch £100 job) which takes a variety of blades [1] including ones intended to cut steel. The trick is to keep the tool firmly against the pipe no matter what, and the blade lubricated. [1] Wood, Ally, Green Wood, Ah. That sounds interesting. Do you have a model number, Ed? I have a Bosch reciprocating saw but guess that isn't the same thing? It's a PFZ 500E, probably what you have? You may break some blades but it will be a lot quicker than using a hacksaw and neater and cleaner than an angle grinder. Also you can use the angle grinder to deburr the cut edge. I have used it mostly for cutting up steel water tanks including their steel connecting pipes. Most of the problem I have are due to awkward positions it has to work in, cutting up stock would be easier. -- Ed Sirett - Property maintainer and registered gas fitter. The FAQ for uk.diy is at http://www.diyfaq.org.uk Gas fitting FAQ http://www.makewrite.demon.co.uk/GasFitting.html Sealed CH FAQ http://www.makewrite.demon.co.uk/SealedCH.html Choosing a Boiler FAQ http://www.makewrite.demon.co.uk/BoilerChoice.html Gas Fitting Standards Docs he http://www.makewrite.demon.co.uk/GasFittingStandards |
#31
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Cutting galvanised steel tube
Andy Hall wrote:
On Sun, 16 Jul 2006 03:53:52 +0100, John Rumm wrote (in article ): Andy Hall wrote: If you have an angle grinder, stands to do right angle cuts are pretty cheap. A metal cutting disc should do it. Any idea from where for a stand, Dave? http://www.axminster.co.uk/product.a...der+stand&u s er_search=1&sfile=1&jump=0 or http://tinyurl.com/ly9pd That should give fast cuts to a reasonable accuracy... Thank you John. This looks like a reasonable solution. Of course it creates the next quandary. I only have a 125mm angle grinder at present. I suspect that that would not cut completely through a tube of 34mm OD without rotating the tube (although I suppose I can do that. So outlay for large stand = £30, 230mm angle grinder (say Bosch) at £86 - total £116. OTOH, I do get a bigger angle grinder that can be used for other things. OTOOH, I don't have much other need for a large angle grinder Entry level cutoff saw seems to be £100 or £117 for apparently better (Jet) one from Axminster. Trouble is that it's physically quite large (needs to be stored) and I can't think of many other applications where I want to cut length of metal.. Rental prices on bench cut off saws seem to vary between £35 and £45, but not clear whether this includes the disc, whether there's a deductable for use or whether one has to buy their discs at some inflated price. Then there's the hacksaw :-) Hire a BIG angle grinder for a day. £17 last time I did. |
#32
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Cutting galvanised steel tube - steel cutting wheels
Ed Sirett wrote:
On Sun, 16 Jul 2006 03:56:23 +0100, John Rumm wrote: The Natural Philosopher wrote: angle grinder with steel cutting wheel will waltz through those. Not the tidiest cut though. Talking of which, has anyone tried those new diamond cutting blades for angle grinders that claim they can cut metal as well as masonry? I wondered what the cut quality and speed is like in metal, and also how well the blades stand up. Yes. It transforms a cheap angle grinder into a useful tool. The blades don't last for ever but they do last for a very long time. More usefully they don't wear down smaller like abrasive cut-off discs, Eventually they do.. |
#33
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Cutting galvanised steel tube - steel cutting wheels
On Sun, 16 Jul 2006 10:23:50 +0100, Ed Sirett wrote
(in article .uk): On Sun, 16 Jul 2006 08:24:22 +0100, Andy Hall wrote: On Sun, 16 Jul 2006 08:12:59 +0100, Ed Sirett wrote (in article .uk): On Sun, 16 Jul 2006 03:56:23 +0100, John Rumm wrote: The Natural Philosopher wrote: angle grinder with steel cutting wheel will waltz through those. Not the tidiest cut though. Talking of which, has anyone tried those new diamond cutting blades for angle grinders that claim they can cut metal as well as masonry? I wondered what the cut quality and speed is like in metal, and also how well the blades stand up. Yes. It transforms a cheap angle grinder into a useful tool. The blades don't last for ever but they do last for a very long time. More usefully they don't wear down smaller like abrasive cut-off discs, which results in making the disc too small (in diameter) to work. Also they make a magnitude less sparks and much less debris. I also use a power hacksaw (Bosch £100 job) which takes a variety of blades [1] including ones intended to cut steel. The trick is to keep the tool firmly against the pipe no matter what, and the blade lubricated. [1] Wood, Ally, Green Wood, Ah. That sounds interesting. Do you have a model number, Ed? I have a Bosch reciprocating saw but guess that isn't the same thing? It's a PFZ 500E, probably what you have? You may break some blades but it will be a lot quicker than using a hacksaw and neater and cleaner than an angle grinder. Also you can use the angle grinder to deburr the cut edge. I have used it mostly for cutting up steel water tanks including their steel connecting pipes. Most of the problem I have are due to awkward positions it has to work in, cutting up stock would be easier. Ah yes, I know. I have a smaller, earlier model made by Bosch Scintilla. I've used this one for cutting dust extraction metal duct, but that is quite thin. I can try it on steel tube and see what happens, I guess. |
#34
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Cutting galvanised steel tube
Andy Hall wrote:
Of course it creates the next quandary. I only have a 125mm angle grinder at present. I suspect that that would not cut completely through a tube of 34mm OD without rotating the tube (although I suppose I can do that. It also depends on the type of disc in use. With an abrasive you will soon get the stage of needing to rotate the work even if you don't at the start, so as to get full usage from the disc. This would not of course be an issue with a diamond disc. So outlay for large stand = £30, 230mm angle grinder (say Bosch) at £86 - total £116. OTOH, I do get a bigger angle grinder that can be used for other things. OTOOH, I don't have much other need for a large angle grinder I find I get very extensive use from my 230mm grinder[1]... just used it to romp through a thousand or so cuts in block paviours, but in the past it has done stirling service on patio slabs, roof tiles, engineering bricks, and rolls of chicken wire. [1] 2kW Hitachi which I am very pleased with - cost about £80 from a local tool suppliers and came with free decent diamond disc (which only got replaced last week after several years of use). Only thing my one lacks that I would look for on a replacement is soft start - the current one gives one hell of a kick when it spins up! Entry level cutoff saw seems to be £100 or £117 for apparently better (Jet) one from Axminster. Trouble is that it's physically quite large (needs to be stored) and I can't think of many other applications where I want to cut length of metal.. I would expect the stand for the grinder to be a little more versatile, could be quite handy for chopping smaller tiles and paving blocks as well. (in fact thinking about it, I wish I had bought one about a week ago!) Rental prices on bench cut off saws seem to vary between £35 and £45, but not clear whether this includes the disc, whether there's a deductable for use or whether one has to buy their discs at some inflated price. Then there's the hacksaw :-) Hacksaw blade in a jigsaw may just about hack it... a big one in a reciprocating saw should also do it well enough. (I chopped off the end of a 8mm thick 200mm high flitch plate with the reciprocating saw - took a while but did it without any hassle). -- Cheers, John. /================================================== ===============\ | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \================================================= ================/ |
#35
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Cutting galvanised steel tube - steel cutting wheels
The Natural Philosopher wrote:
Yes. It transforms a cheap angle grinder into a useful tool. The blades don't last for ever but they do last for a very long time. More usefully they don't wear down smaller like abrasive cut-off discs, Eventually they do.. To be fair they probably can't quite! ;-) abrasives are abrasive all the way to the hub, diamond discs usually only have a cutting edge that is at most 1cm deep and once that is worn away you are black to a plain steel disc. -- Cheers, John. /================================================== ===============\ | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \================================================= ================/ |
#36
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Cutting galvanised steel tube
"Andy Hall" wrote in message ... On Sat, 15 Jul 2006 23:01:11 +0100, Frank Erskine wrote (in article ): On Sat, 15 Jul 2006 22:44:52 +0100, Andy Hall had this to say: I have a need to cut quite a number of lengths of galvanised steel tube (about 30) 25mm ID, 33.7mm OD e.g. http://www.fhbrundle.com/tube-14.htm A hacksaw is going to become boring for doing this quite quickly I think so I am looking for a faster alternative. Is this angle grinder territory? If so, can anybody suggest a suitable cutting wheel? Otherwise, is a more substantial saw like a cutoff saw required? I would use a power hacksaw. Then again, I have ready access to one! Didn't know they existed. Looks eminently sensible. I prefer a bandsaw cut-off machine, which looks much the same except that it cuts continuously, whereas the power hacksaw spend half its time on the back stroke, so it cuts much faster. Colin Bignell |
#37
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Cutting galvanised steel tube
The message
from John Rumm contains these words: It also depends on the type of disc in use. With an abrasive you will soon get the stage of needing to rotate the work even if you don't at the start, so as to get full usage from the disc. This would not of course be an issue with a diamond disc. Though my current 330mm chopsaw blade has gone through 20 slices of 50 x 3 square box, dozens of bits of 50x5 flat and 50x50x3 and x5 angle and is still not fully through. -- Skipweasel Pay no attention to that man behind the curtain. |
#38
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Cutting galvanised steel tube
On Sat, 15 Jul 2006 22:44:52 +0100, Andy Hall
wrote: I have a need to cut quite a number of lengths of galvanised steel tube (about 30) 25mm ID, 33.7mm OD e.g. http://www.fhbrundle.com/tube-14.htm A hacksaw is going to become boring for doing this quite quickly I think so I am looking for a faster alternative. Is this angle grinder territory? If so, can anybody suggest a suitable cutting wheel? Otherwise, is a more substantial saw like a cutoff saw required? See if you can hire a cutoff saw/chop saw locally for a reasonable amount. Or if you have a decent bench vice or another good way to clamp the tube hire a 9" grinder or buy a cheap one. The advantage of a grinder is trimming/cutting in situ if required. Normal metal cutting discs will work fine, though the thin 'inox'/stainless ones create less heat if that's a problem. The thin ones do need a bit of care, especially not letting the disc getting 'pinched' towards the end of the cut. I'd stay out of the 'cutting plane' too... I'd expect even the best hacksaw blade would be hard work until you break through the tube at the start of the cut. cheers, Pete. |
#39
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Cutting galvanised steel tube
The message
from John Rumm contains these words: Though my current 330mm chopsaw blade has gone through 20 slices of 50 x 3 square box, dozens of bits of 50x5 flat and 50x50x3 and x5 angle and is still not fully through. Is that an abrasive or a diamond disc? Abrasive. -- Skipweasel Pay no attention to that man behind the curtain. |
#40
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Cutting galvanised steel tube
In article ,
Andy Hall wrote: If you have an angle grinder, stands to do right angle cuts are pretty cheap. A metal cutting disc should do it. Any idea from where for a stand, Dave? I got mine from a tool stall in Wimbledon Stadium car park Sunday market for a fiver. I've got two 4.5" angle grinders and they both fit. I've just looked at it and there's no brand, but it will be one of the common cheapies. -- *I'll try being nicer if you'll try being smarter Dave Plowman London SW To e-mail, change noise into sound. |
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