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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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Sharpening chisels help
I dont use mine very often and over the years they have been sharpened
rather badly. Used mainly for rough woodwork. Anyhow I have decided to spend some time and get all my planes and chisels sharpened and with the correct angles. Today using a honing guide it took me about 3 hours to get the primary bevel angle ground doing it by hand on 180 grit on a glass sheet. As I have a few blades to be done is there a way to speed up the intitial part of the sharpening before progressing to finer grits with the honing guide which I dont mind spending a bit of time on. Tools to hand would be: Angle grinder / belt sander / bench grinder I suspect something between the belt sander and the bench grinder but how to get the correct angle as I dont have a jig for any of these. |
#2
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Sharpening chisels help
Sharpening by hand is a slow process especially getting the 25deg. sharpening angle. We had a 16" horizontal oil fed grinder for that purpose but when it could not be economically repaired we resorted to using one of the now popular water cooled models typified by the Tormek type of systems.
http://www.axminster.co.uk/tormek Surprisingly we found it quite good though fiddly to set up. The leather honing wheel we did not like preferring to hand hone the final 35deg. angle on an India stone. The Tormek models can work out quite expensive especially if you go for loads of different jigs. I have seen similar models cheaper but cannot say how effective they are having only experienced the Tormek system. Richard |
#3
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Sharpening chisels help
On 03/03/2016 22:49, Tricky Dicky wrote:
Sharpening by hand is a slow process especially getting the 25deg. sharpening angle. We had a 16" horizontal oil fed grinder for that purpose but when it could not be economically repaired we resorted to using one of the now popular water cooled models typified by the Tormek type of systems. http://www.axminster.co.uk/tormek Surprisingly we found it quite good though fiddly to set up. The leather honing wheel we did not like preferring to hand hone the final 35deg. angle on an India stone. The Tormek models can work out quite expensive especially if you go for loads of different jigs. I have seen similar models cheaper but cannot say how effective they are having only experienced the Tormek system. Richard As I wont be doing this to often due to usage I cant really justify an expense although some of those tools look good, hopefully I can think of a jig that will get the bulk of the correction angles done quickly and then finish on the hand honing guide. |
#4
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Sharpening chisels help
On 03/03/2016 23:23, ss wrote:
On 03/03/2016 22:49, Tricky Dicky wrote: Sharpening by hand is a slow process especially getting the 25deg. sharpening angle. We had a 16" horizontal oil fed grinder for that purpose but when it could not be economically repaired we resorted to using one of the now popular water cooled models typified by the Tormek type of systems. http://www.axminster.co.uk/tormek Surprisingly we found it quite good though fiddly to set up. The leather honing wheel we did not like preferring to hand hone the final 35deg. angle on an India stone. The Tormek models can work out quite expensive especially if you go for loads of different jigs. I have seen similar models cheaper but cannot say how effective they are having only experienced the Tormek system. Richard As I wont be doing this to often due to usage I cant really justify an expense although some of those tools look good, hopefully I can think of a jig that will get the bulk of the correction angles done quickly and then finish on the hand honing guide. I've got a little device driven by an electric drill which has a small grind-stone (2, actually - coarse and fine) and a magnetic holder to hold the chisel at the right angle. Only cost a few quid, but I can't remember where I got it. [I looked on-line so as to be able to point you to a URL, but to no avail]. It only does one angle, but is quite fast. At school, I was taught to sharpen chisels with two angles - with a steeper angle near the tip - but current perceived wisdom seems to suggest that this is unnecessary. -- Cheers, Roger ____________ Please reply to Newsgroup. Whilst email address is valid, it is seldom checked. |
#5
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Sharpening chisels help
On Friday, 4 March 2016 10:38:09 UTC, Roger Mills wrote:
I've got a little device driven by an electric drill which has a small grind-stone (2, actually - coarse and fine) and a magnetic holder to hold the chisel at the right angle. Only cost a few quid, but I can't remember where I got it. [I looked on-line so as to be able to point you to a URL, but to no avail]. It only does one angle, but is quite fast. At school, I was taught to sharpen chisels with two angles - with a steeper angle near the tip - but current perceived wisdom seems to suggest that this is unnecessary. It gets some of the bulk out the way, sometimes useful, and makes resharpening quicker. As I've found one can break a lot of 'rules' when grinding and still come out good. NT |
#6
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Sharpening chisels help
On 04/03/2016 10:37, Roger Mills wrote:
On 03/03/2016 23:23, ss wrote: On 03/03/2016 22:49, Tricky Dicky wrote: Sharpening by hand is a slow process especially getting the 25deg. sharpening angle. We had a 16" horizontal oil fed grinder for that purpose but when it could not be economically repaired we resorted to using one of the now popular water cooled models typified by the Tormek type of systems. http://www.axminster.co.uk/tormek Surprisingly we found it quite good though fiddly to set up. The leather honing wheel we did not like preferring to hand hone the final 35deg. angle on an India stone. The Tormek models can work out quite expensive especially if you go for loads of different jigs. I have seen similar models cheaper but cannot say how effective they are having only experienced the Tormek system. Richard As I wont be doing this to often due to usage I cant really justify an expense although some of those tools look good, hopefully I can think of a jig that will get the bulk of the correction angles done quickly and then finish on the hand honing guide. I've got a little device driven by an electric drill which has a small grind-stone (2, actually - coarse and fine) and a magnetic holder to hold the chisel at the right angle. Only cost a few quid, but I can't remember where I got it. [I looked on-line so as to be able to point you to a URL, but to no avail]. It only does one angle, but is quite fast. At school, I was taught to sharpen chisels with two angles - with a steeper angle near the tip - but current perceived wisdom seems to suggest that this is unnecessary. The idea being its much quicker to resharpen the micro bevel than the whole thing. -- Cheers, John. /================================================== ===============\ | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \================================================= ================/ |
#7
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Sharpening chisels help
On 04/03/2016 19:02, John Rumm wrote:
On 04/03/2016 10:37, Roger Mills wrote: I've got a little device driven by an electric drill which has a small grind-stone (2, actually - coarse and fine) and a magnetic holder to hold the chisel at the right angle. Only cost a few quid, but I can't remember where I got it. [I looked on-line so as to be able to point you to a URL, but to no avail]. It only does one angle, but is quite fast. At school, I was taught to sharpen chisels with two angles - with a steeper angle near the tip - but current perceived wisdom seems to suggest that this is unnecessary. The idea being its much quicker to resharpen the micro bevel than the whole thing. Fair enough - but that probably applies more to hand sharpening than to using a powered device of some sort. -- Cheers, Roger ____________ Please reply to Newsgroup. Whilst email address is valid, it is seldom checked. |
#8
Posted to uk.d-i-y
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Sharpening chisels help
On 03/03/2016 21:33, ss wrote:
I dont use mine very often and over the years they have been sharpened rather badly. Used mainly for rough woodwork. Anyhow I have decided to spend some time and get all my planes and chisels sharpened and with the correct angles. Today using a honing guide it took me about 3 hours to get the primary bevel angle ground doing it by hand on 180 grit on a glass sheet. As I have a few blades to be done is there a way to speed up the intitial part of the sharpening before progressing to finer grits with the honing guide which I dont mind spending a bit of time on. Tools to hand would be: Angle grinder / belt sander / bench grinder I suspect something between the belt sander and the bench grinder but how to get the correct angle as I dont have a jig for any of these. Yup a honing jig with rollers and the belt sander will get you there fast. Do it in short bursts to save overheating the steel. Having a bowl of water close by to dip it in from time to time helps. In the end I went for the WorkSharp system - not quite as pricey as the Tormek and in some ways a bit more versatile for doing hand tools (although probably not as good for machine planer knives) http://www.rutlands.co.uk/sp+woodwor...harp+ws3000kit (there are videos on youtube that show various ways of building them into a box to have a large flat surface flush with the wheel surface - that makes using external honing jigs much easier) -- Cheers, John. /================================================== ===============\ | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \================================================= ================/ |
#9
Posted to uk.d-i-y
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Sharpening chisels help
ss wrote:
I dont use mine very often and over the years they have been sharpened rather badly. Used mainly for rough woodwork. Anyhow I have decided to spend some time and get all my planes and chisels sharpened and with the correct angles. Today using a honing guide it took me about 3 hours to get the primary bevel angle ground doing it by hand on 180 grit on a glass sheet. As I have a few blades to be done is there a way to speed up the intitial part of the sharpening before progressing to finer grits with the honing guide which I dont mind spending a bit of time on. Tools to hand would be: Angle grinder / belt sander / bench grinder I suspect something between the belt sander and the bench grinder but how to get the correct angle as I dont have a jig for any of these. Practice makes perfect, do as the professionals have done for centuries, wheel first then stone, by hand and eye (they managed) |
#10
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Sharpening chisels help
On 04/03/2016 03:27, F Murtz wrote:
Practice makes perfect, do as the professionals have done for centuries, wheel first then stone, by hand and eye (they managed) Yes but I have had these chisels for about 40 years and only ever sharpened (attempted) about 4 or 5 times due to low usage so I will never get enough practice. There isnt a hope in hell of me doing them by hand / eye and doing a decent job. If only. |
#11
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Sharpening chisels help
On Thursday, 3 March 2016 21:35:01 UTC, ss wrote:
I dont use mine very often and over the years they have been sharpened rather badly. Used mainly for rough woodwork. Anyhow I have decided to spend some time and get all my planes and chisels sharpened and with the correct angles. Today using a honing guide it took me about 3 hours to get the primary bevel angle ground doing it by hand on 180 grit on a glass sheet. As I have a few blades to be done is there a way to speed up the intitial part of the sharpening before progressing to finer grits with the honing guide which I dont mind spending a bit of time on. Tools to hand would be: Angle grinder / belt sander / bench grinder I suspect something between the belt sander and the bench grinder but how to get the correct angle as I dont have a jig for any of these. Any of those 3 could do the grinding. Belt sander and especially angle grinder run too fast, with those go easy & let it cool off a lot, you don't want to overheat the steel or it goes soft. Never use water with an AG grit disc, dampness can make them explode. If you have trouble with the angle, why not print the right angle on paper so you've got something to keep an eye on & compare. NT |
#12
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Sharpening chisels help
John have you had any problems overheating the plane blades and chisels with no water or oil cooling and how long do the disks last?
Richard |
#13
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Sharpening chisels help
On 04/03/2016 09:23, Tricky Dicky wrote:
John have you had any problems overheating the plane blades and chisels with no water or oil cooling and how long do the disks last? Richard Or pop down to Toolstation and get a new set :-) |
#14
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Sharpening chisels help
On 04/03/2016 09:23, Tricky Dicky wrote:
John have you had any problems overheating the plane blades and chisels with no water or oil cooling and how long do the disks last? I take it this was in response to my worksharp comments? Short answer, "no" no overheating problems... the disc speed is relatively low. When doing narrower chisels etc they are sharpened whilst held against a heatsink anyway. You also tend to do it in short bursts anyway, as you sharpen the bevel against the underside of the disc, and so remove it often to inspect how its going. Then there is a delay as you flip or swap discs. (plus you are handling the thing close to the pointy end, so its easy to get a feel for the heat being generated). As to abrasive life - hard to say, I am still on my first set that came with the machine. The supplied ones are decent quality Norton discs. The also supply a lump of crepe abrasive cleaner. (keep in mind that I am not a very heavy hand tool user - I have 4 or five chisels, and a couple of planes that get regular use - but typically for final finishing and touching up rather than doing the grunt work of flattening rough boards etc. I expect if you were sharpening wood turning tools several times a session, then you might get through them faster. Having said that, the system they use for sharpening curved surfaces really is a revelation, as you look though the abrasive to see the surface you are sharpening in real time, and it does not require extra jigs to get a decent result. -- Cheers, John. /================================================== ===============\ | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \================================================= ================/ |
#16
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Sharpening chisels help
On Friday, 4 March 2016 09:48:50 UTC, ss wrote:
On 04/03/2016 06:58, tabbypurr wrote: Any of those 3 could do the grinding. Belt sander and especially angle grinder run too fast, with those go easy & let it cool off a lot, you don't want to overheat the steel or it goes soft. Never use water with an AG grit disc, dampness can make them explode. If you have trouble with the angle, why not print the right angle on paper so you've got something to keep an eye on & compare. I think my best bet is to make some sort of wooden jig and use on the belt sander at slowest speed with a bucket of water handy for cooling. sounds good, with wet & dry NT |
#17
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Sharpening chisels help
On 3/3/2016 9:33 PM, ss wrote:
I dont use mine very often and over the years they have been sharpened rather badly. Used mainly for rough woodwork. Anyhow I have decided to spend some time and get all my planes and chisels sharpened and with the correct angles. Today using a honing guide it took me about 3 hours to get the primary bevel angle ground doing it by hand on 180 grit on a glass sheet. As I have a few blades to be done is there a way to speed up the intitial part of the sharpening before progressing to finer grits with the honing guide which I dont mind spending a bit of time on. Tools to hand would be: Angle grinder / belt sander / bench grinder I suspect something between the belt sander and the bench grinder but how to get the correct angle as I dont have a jig for any of these. I do any "rough" preparation on the slow, wet stone of my bench grinder, and do the final cleanup with one of these http://www.screwfix.com/p/stanley-ch...FagKwwodgbQLEw Purists would say you get the best edge with a japanese water stone rather than a "western" oil-stone. Main danger with belt sander / high speed bench grinder / angle grinder is that if you overheat the edge you will ruin the temper and would then have to go through the full harden / temper sequence. Or grind off a lot of material. |
#18
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Sharpening chisels help
On Friday, 4 March 2016 11:10:57 UTC, newshound wrote:
On 3/3/2016 9:33 PM, ss wrote: I dont use mine very often and over the years they have been sharpened rather badly. Used mainly for rough woodwork. Anyhow I have decided to spend some time and get all my planes and chisels sharpened and with the correct angles. Today using a honing guide it took me about 3 hours to get the primary bevel angle ground doing it by hand on 180 grit on a glass sheet. As I have a few blades to be done is there a way to speed up the intitial part of the sharpening before progressing to finer grits with the honing guide which I dont mind spending a bit of time on. Tools to hand would be: Angle grinder / belt sander / bench grinder I suspect something between the belt sander and the bench grinder but how to get the correct angle as I dont have a jig for any of these. I do any "rough" preparation on the slow, wet stone of my bench grinder, and do the final cleanup with one of these http://www.screwfix.com/p/stanley-ch...FagKwwodgbQLEw Purists would say you get the best edge with a japanese water stone rather than a "western" oil-stone. Main danger with belt sander / high speed bench grinder / angle grinder is that if you overheat the edge you will ruin the temper and would then have to go through the full harden / temper sequence. Or grind off a lot of material. Yes - very easy to avoid though. The ability of an AG to throw a tool violently also demands attention. NT |
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