Re: [ATM] Source to cut and curve generate refractor blanks.

["Richard Schwartz" <richas@earthlink.net>]

Bob,

I wonder if you have seen any good jigs for accurate alignment of the
trepan after turning the glass over.   By cutting half way through the
glass, and then turning the glass over to finish the job, you avoid those
breakthrough chips on the back side.   But alignment has to be accurate!

. . . Richard


> [Original Message]
> From: Bob May <bobmay@nethere.com>
> To: ATMList Post <atm@atmlist.net>
> Date: 4/27/2004 1:43:39 PM
> Subject: Re: [ATM] Source to cut and curve generate refractor blanks.
>
> Trepanning is an easy job once you build the tool.  for small stuff,
finding
> a can or tube the right size can be an experience in scrounging of the
first
> water.
> Don't be afraid as the process is somewhat slow (you're grinding the slot
in
> the glass with grit rather than some other faster process) and is best
> motorized if possible although I've seen glass that was hand trepanned of
> 14" diameter - the guy said that he'd put a drill motor on the next one he
> does as it took several days as he couldn't keep turning that much at one
> time.  Consider an inch an hour to be a decent amount of time for the
first
> time at this.
> You can probably find some 4" diameter exhaust pipe at a truck muffler
shop
> and a little work on that will make a nice 4" tool for the drill press.
>
> _______________________________________________
> ATM mailing list http://www.atmlist.net/



_______________________________________________
ATM mailing list http://www.atmlist.net/