12-30-2012, 11:07 AM
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12-30-2012, 01:09 PM
Nice writeup Rick! One of these days I'll have to make my first home-made reamer. I need a 7.62x25 reamer and I think I have the 'knowledge' to do it now, I just need the nerve to start cutting metal. (heat would be nice too... cold shop)
So, I really like those soft jaws in one of the pics above. Did you make those? They look really useful.
So, I really like those soft jaws in one of the pics above. Did you make those? They look really useful.
12-30-2012, 04:33 PM
Rick,
Excellent write up and photos a job well done
DaveH
Excellent write up and photos a job well done
DaveH
12-30-2012, 08:07 PM
Thanks guys. Ken, those are old barrel jaws for an AR. I can't remember where I got them, but places like Midway and Brownell's still carry them. Not bad on an AR in a bench vise, but great on most round stock in the milling machine!
12-31-2012, 08:28 AM
I have read that coating in liquid soap will prevent scale build up. Haven't tried it myself though, so could be total crap!
12-31-2012, 09:34 PM
I've not heard that. I may try it on a piece of drop. just any type of liquid soap?
01-01-2013, 04:56 AM
Honestly I cannot remember. Best to Google it...
01-01-2013, 09:30 PM
Thanks Rick, I think I'll take some of my aluminum drops and make a pair of jaws for my larger vise.
01-02-2013, 12:01 AM
Nice job on the reamer Rick and a great write-up.
The way to prevent scale is to keep oxygen away from the part as it's heated. If you have a furnace, you can fashion an air tight box for the part or use a stainless steel envelope which you can purchase just for that purpose. Since you are using a torch, you might try putting the reamer in a pipe nipple with capped ends. An old timers way to consume any oxygen in the heating receptacle is to place a piece of paper in with the part. As the paper burns, it will consume any oxygen that is present and keep scale from building on the part.
Tom
The way to prevent scale is to keep oxygen away from the part as it's heated. If you have a furnace, you can fashion an air tight box for the part or use a stainless steel envelope which you can purchase just for that purpose. Since you are using a torch, you might try putting the reamer in a pipe nipple with capped ends. An old timers way to consume any oxygen in the heating receptacle is to place a piece of paper in with the part. As the paper burns, it will consume any oxygen that is present and keep scale from building on the part.
Tom
01-02-2013, 09:24 PM
Thanks Tom. I seem to remember the paper in the crucible trick mentioned sometime long ago. I think I actually moved the torch too close to the reamer. A friend of mine swears by the "bean can" furnace for things like this. I may have to try that one next. He uses a Mapp torch and gets things plenty hot. No scale.
Ken, if I had some drop of suitable size, I would make another pair like these. I have a pair of jaws made from plain old aluminum angle that I use a lot too.
Ken, if I had some drop of suitable size, I would make another pair like these. I have a pair of jaws made from plain old aluminum angle that I use a lot too.
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