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#1
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Drill bit size for copper pipe union?
Got the bright idea of using a 1/2" copper pipe union as a bushing and
then realized that I don't have a drill bit the right size. Looks like it's a tight 11/16, an 18mm, or a slightly loose 23/32. Anybody know offhand which one is right? |
#2
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Drill bit size for copper pipe union?
J. Clarke wrote:
Got the bright idea of using a 1/2" copper pipe union as a bushing and then realized that I don't have a drill bit the right size. Looks like it's a tight 11/16, an 18mm, or a slightly loose 23/32. Anybody know offhand which one is right? Will depend on whether it's M or L. Can't just is mic it??? -- |
#3
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Drill bit size for copper pipe union?
On 6/25/2010 8:43 PM, dpb wrote:
J. Clarke wrote: Got the bright idea of using a 1/2" copper pipe union as a bushing and then realized that I don't have a drill bit the right size. Looks like it's a tight 11/16, an 18mm, or a slightly loose 23/32. Anybody know offhand which one is right? Will depend on whether it's M or L. Can't just is mic it??? And that tells me that it's a tight 11/16, pretty close to right on 18mm, or a slightly loose 23/32. The question is which one makes a hole that it actually fits. The nominal diameter of the bit and the diameter of the hole are not the same. And I think it's an M--it's whatever Home Despot sells anyway. And it's going into MDF, not precisely bored steel. I'm not really looking for somebody to compare measurements, I'm hoping that someone else who has had the same idea has found out from experience which bit works. |
#4
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Drill bit size for copper pipe union?
Subject
Time for some test holes in a scrap piece of MDF. Lew |
#5
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Drill bit size for copper pipe union?
"Lew Hodgett" wrote in message ... Subject Time for some test holes in a scrap piece of MDF. Lew WHAT???? This subject hasn't been beaten to death and we haven't reached consesus yet. How dare you inject such a simple and obvious solution this early in the game? Art |
#6
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Drill bit size for copper pipe union?
On Fri, 25 Jun 2010 19:14:02 -0700, "Artemus"
wrote: "Lew Hodgett" wrote in message . .. Subject Time for some test holes in a scrap piece of MDF. Lew WHAT???? This subject hasn't been beaten to death and we haven't reached consesus yet. How dare you inject such a simple and obvious solution this early in the game? Art Wait just a minute. Nobody has even determined if it is a coupling with a stop or without a stop. That would make a big difference if he was going to use it as a bearing. If it has a stop he's going to have to go back to the BORG and buy another one. That could be a completely different diameter. Then what?? |
#7
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Drill bit size for copper pipe union?
On 6/25/2010 10:07 PM, Lew Hodgett wrote:
Subject Time for some test holes in a scrap piece of MDF. Yeah, if I had the bits in hand. But I don't. |
#8
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Drill bit size for copper pipe union?
In article ,
J. Clarke wrote: On 6/25/2010 8:43 PM, dpb wrote: J. Clarke wrote: Got the bright idea of using a 1/2" copper pipe union as a bushing and then realized that I don't have a drill bit the right size. Looks like it's a tight 11/16, an 18mm, or a slightly loose 23/32. Anybody know offhand which one is right? Will depend on whether it's M or L. Can't just is mic it??? And that tells me that it's a tight 11/16, pretty close to right on 18mm, or a slightly loose 23/32. The question is which one makes a hole that it actually fits. The nominal diameter of the bit and the diameter of the hole are not the same. Plumbing stuff is specced by inside diameter. O.D. is whatever the manufacturer feels like. |
#9
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Drill bit size for copper pipe union?
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#10
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Drill bit size for copper pipe union?
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#12
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Drill bit size for copper pipe union?
In article ,
Doug Miller wrote: In article munications, (Robert Bonomi) wrote: Plumbing stuff is specced by inside diameter. Incorrect. IS CORRECT, _IN_THE_ORIGINAL_CONTEXT_ -- "fittings", not "Pipe" O.D. is whatever the manufacturer feels like. Incorrect. IS CORRECT, _IN_THE_ORIGINAL_CONTEXT_ -- "fittings", not "Pipe" Pipe is specified by OD; the ID is determined by the nominal OD and the wall thickness. Yes, _Pipe_ is specified by OD. ID varies. *FITTINGS* -- the 'stuff' under discussion -- which pipe goes into, *ARE* sized by the I.D. They -have- to be, to ensure a proper fit with the 'same size name' pipe (OD. speirfication) The OD of such fittings is *NOT* critical -- it doesn't have to match up to anything else -- and, therefore *CAN*BE* 'whatever the manufacturer d*mn well pleases" |
#13
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Drill bit size for copper pipe union?
In article unications,
Robert Bonomi wrote: ...snipped... Plumbing stuff is specced by inside diameter. O.D. is whatever the manufacturer feels like. That may be true in the case of couplings or fittings that pipe screws _into_ but the OD of the pipe itself is controlled by the spec, otherwise pipe and fittings from different sources would not be interchangeable. And unlike pipe, tubing is sized by OD. -- When the game is over, the pawn and the king are returned to the same box. Larry Wasserman - Baltimore Maryland - lwasserm(a)sdf. lonestar.org |
#14
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Drill bit size for copper pipe union?
"Larry W" wrote in message ... In article unications, Robert Bonomi wrote: ...snipped... Plumbing stuff is specced by inside diameter. O.D. is whatever the manufacturer feels like. That may be true in the case of couplings or fittings that pipe screws _into_ but the OD of the pipe itself is controlled by the spec, otherwise pipe and fittings from different sources would not be interchangeable. And unlike pipe, tubing is sized by OD. -- So I will try to clarify the issue or confuse people even more. ;oP I can tell you this stuff can be confusing. An unthreaded copper pipe is measure not by the inside diameter because of the schedule and not by the outside diameter either. If you go buy a 3/8" unthreaded pipe it will have an OD of 1/2". A 1/2" pipe will measure 5/8 OD. The schedule will change the thickness from the inside diameter. An unthreaded copper fitting is measured by the ID and a 1/2 " copper pipe fitting (tee, coupler) will have a 5/8" inside diameter. For other material like PVC (I never measured them) or iron pipes (never used them) the measurement will be different from copper. Because I built a still I had to measure the copper pipes and fitting and at some point I was a bit lost. Then for threaded fitting the measurement are different and since I never used them I find it a bit confusing if I had to order some. The OPoster has a fitting which I am not sure exactly because an union has 3 parts so if it is untreaded and the inside diameter is 1/2" it is a 3/8" fitting to fit a 3/8" pipe measuring 1/2" OD (the pipe). So the hole if a standard fitting meaning (coupler) will be 1/2" +/- with the tolerance which I do not know. This will fit a 3/8" pipe which will measure 1/2" OD. About the confusion I had at some point was the copper tubing (coil) which are measured O.D. Though I looked at McMaster they seem to use the same convention than for the pipe I can swear they did not in the past. I imagine the confusion when ordering online. http://www.mcmaster.com/#copper-pipe/=7ppbkr Below they use the proper convention for copper pipe and copper tubing. http://www.plumbingsupply.com/coppertubing.html VD --- news://freenews.netfront.net/ - complaints: --- |
#15
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Drill bit size for copper pipe union?
"dpb" wrote in message ... J. Clarke wrote: Got the bright idea of using a 1/2" copper pipe union as a bushing and then realized that I don't have a drill bit the right size. Looks like it's a tight 11/16, an 18mm, or a slightly loose 23/32. Anybody know offhand which one is right? Will depend on whether it's M or L. Can't just is mic it??? I made a reply sooner about pipe size to clarify thing but I did not read your post correctly. The inside diameter of your union is not 1/2" like I though so it is a real 1/2" fitting measuring 5/8 inside. Since I saw the tool you bought I know now what you want to do and I do not know the OD but it will be obviously more than 5/8". I should have noticed when you talked about 11/16. Sorry I just read too fast though my post on copper fitting stand. VD --- news://freenews.netfront.net/ - complaints: --- |
#16
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Drill bit size for copper pipe union?
"VirtualDen" wrote in message ... "dpb" wrote in message ... J. Clarke wrote: Got the bright idea of using a 1/2" copper pipe union as a bushing and then realized that I don't have a drill bit the right size. Looks like it's a tight 11/16, an 18mm, or a slightly loose 23/32. Anybody know offhand which one is right? Will depend on whether it's M or L. Can't just is mic it??? I made a reply sooner about pipe size to clarify thing but I did not read your post correctly. The inside diameter of your union is not 1/2" like I though so it is a real 1/2" fitting measuring 5/8 inside. Since I saw the tool you bought I know now what you want to do and I do not know the OD but it will be obviously more than 5/8". I should have noticed when you talked about 11/16. Sorry I just read too fast though my post on copper fitting stand. VD Oops this post is supposed to be a reply to Clarke. --- news://freenews.netfront.net/ - complaints: --- |
#17
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Drill bit size for copper pipe union?
On Jun 25, 3:59*pm, "J. Clarke" wrote:
Got the bright idea of using a 1/2" copper pipe union as a bushing and then realized that I don't have a drill bit the right size. *Looks like it's a tight 11/16, an 18mm, or a slightly loose 23/32. * The drill has to match the exterior dimension of the union? That dimension is NOT CONTROLLED, it can be different from one to the next. One I have handy measures 18.6 mm, a little under 47/64 inch... |
#18
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Drill bit size for copper pipe union?
J. Clarke wrote:
Got the bright idea of using a 1/2" copper pipe union as a bushing and then realized that I don't have a drill bit the right size. Looks like it's a tight 11/16, an 18mm, or a slightly loose 23/32. Anybody know offhand which one is right? If you epoxy it in, use the 23/32 or 3/4". If you are press fitting it, use the 11/16. If the press is too tight, perhaps freezing the coupling to shrink it a bit first would help. Out of curiosity, what are you using it for? I use them for file and chisel handles I turn, they look really nice all shined up and varnished, even after 30 years of hard use: http://jbstein.com/Flick/Handle.jpg http://jbstein.com/Flick/Handle2.jpg Also, I measured an old 1/2 fitting with my new 6" HF digital caliper and also got 23/32. The caliber is on sale 7/2 to 7/5 at HF fo $15. I of course paid list on an impulse buy. -- Jack The Problem with Socialism is you eventually run out of Other Peoples Money! http://jbstein.com |
#19
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Drill bit size for copper pipe union?
On 6/25/2010 6:59 PM, J. Clarke wrote:
Got the bright idea of using a 1/2" copper pipe union as a bushing and then realized that I don't have a drill bit the right size. Looks like it's a tight 11/16, an 18mm, or a slightly loose 23/32. Anybody know offhand which one is right? Well, for anyone who cares, I found that the right size bit is an Irwin Model 44801 evil grin. |
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