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Thank you for the info and photos.I checked out the PTG link. Doesn't look like you get much for your $150. Looks very similar to my home-made system. I used a carbonator pump ($50 on ebay), and a Deublin rotary union ($25 ebay) and then just some tubing and a bucket from Lowes. I modified my pump with a lighter spring to give about 20 psi (v. the 150 psi it put out as it was) and that was about it. I use Houghton HOCUT 795MP-RHS water based coolant.
I switched from a Gre-Tan to a generic Deublin rotary coupler. I drill/tap the muzzle end of the blank for 1/4" NPT. Much better flow, more secure, and it puts the sacrificial first inch of the muzzle to use. If I need to set a barrel back, I have cutoffs with the pipe thread remaining that are threaded to screw on 1/2-28 or 5/8-24 muzzles.
This is also how I do it as well. works great and never leaks and can spin 1200rpm with no hose clamp wobbling all over the place.
How fast are you feeding that in? You need to have a reasonable chip thickness to keep the reamer from chattering.This is also how I do it as well. works great and never leaks and can spin 1200rpm with no hose clamp wobbling all over the place.
You running a carbide reamer? Never heard of running HSS at that high a speed.
You running a carbide reamer? Never heard of running HSS at that high a speed.
You running a carbide reamer? Never heard of running HSS at that high a speed.
This one i made cost me $6 to make and maybe an hour om my lathe. It works great. I have not used it faster than 300rpm. I chamber between 40 and 50rpm so dont really see a need for anything better. The rubber tube is a bit floppy but works and is quick to install. Sometimes when you rechamber there is no extra barrel length to sacrifice so the tube comes in handy there.Here is some more pics.
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I tried the airline swivel and it worked for a little bit but eventually started to leak, its not really meant to be spun like that and the seals wore out quick.
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