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Best Way to cut O-Ring Grooves

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Best Way to cut O-Ring Grooves

Unread postAuthor: SpudStuff » Tue Jun 27, 2006 11:09 pm

Okay. Im sure someone has answered this before but what is the best way to cut O-Ring grooves in a 4 inch Piston. I have two tight fitting 1/8 inch o-rings. I am using the bell end of a piece of three inch pipe. The pipe fits in the chamber with 6/100 of an inch gap. I dont have a lathe, drill press, or table saw. I have a dremel and a few files.
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Unread postAuthor: djt » Tue Jun 27, 2006 11:20 pm

i made some nice grooves by taking a band saw, cutting a not too deep ring around the pipe, and filing from the ring. i just stuck the edge of a one side flat one side round file in the cut and filed around.
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Unread postAuthor: SpudStuff » Tue Jun 27, 2006 11:20 pm

i dont have a band saw
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Unread postAuthor: djt » Tue Jun 27, 2006 11:31 pm

you could do the same thing with a hand saw
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Unread postAuthor: SpudStuff » Tue Jun 27, 2006 11:40 pm

please elaborate on how to do what you are saying
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Unread postAuthor: sgort87 » Wed Jun 28, 2006 12:39 am

I wouldn't bother using O-rings.
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Unread postAuthor: djt » Wed Jun 28, 2006 10:33 am

ok im saying make a not very deep cut all the way around the pipe where you want to put the o ring. then put the edge of the file in the cut and file all the way around to widen the cut to the size you need. basically make the cut all the way around, and make it wider however you want. i would just suggest a file.
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Unread postAuthor: boilingleadbath » Wed Jun 28, 2006 11:35 am

With .06" gap?
That's a bit big to go skipping the o-ring step, isn't it?
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Unread postAuthor: sgort87 » Wed Jun 28, 2006 12:34 pm

That's about half the thickness of standard electrical tape. There isn't much air getting past that.
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Unread postAuthor: SpudStuff » Wed Jun 28, 2006 1:44 pm

Im trying to make it air tight like a check valve for best performance
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Unread postAuthor: CS » Wed Jun 28, 2006 2:54 pm

Im sorry, usint a hacksaw to cut o-ring grooves??? While your at it cut your PVC with a chain saw. Beyond a lathe or table saw I think it would be fair to say your attempts are worthless. Ive always had a idear' on how to rig up a jig for a dremel though... Let me render in Rhino and Ill post.
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Unread postAuthor: SpudStuff » Wed Jun 28, 2006 2:58 pm

I made a jig for my dremal using a 1/8 th inch metal grinding bit. the problem is that the bit is not 1/8 inch
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Unread postAuthor: CS » Wed Jun 28, 2006 4:09 pm

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Unread postAuthor: boilingleadbath » Wed Jun 28, 2006 11:19 pm

Sgort, .06", not .006"

Unless you have some 1/8" thick electrical tape!
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Unread postAuthor: SpudStuff » Thu Jun 29, 2006 1:11 am

my guess is you can clamp the dremel horisontal with the surface you clamp the wood to. that is the best idea yet. i think i have some angle iron to try it with. thanks
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