We used to cast conveyor skids out of Devcon flexane. Seems reasonable
as long as the flexane didn't stick to the tape as it pressed against
the roller.
As far as the ATM hobby, I made a mirror when I was in high school. It
was a a lot of hard work but very rewarding. I'm on an ATM list and
have been considering doing it again, if I could find the time.
James
Mike Gemeny wrote:
>Whereas, Al Kossow wrote:
>
>
>
>
>
>>The long term prospects of tape transports with any rubber parts is not
>>
>>
>good, either.
>
>
>>Almost all of the 1/4" cartridge tape drives I own are inoperable because
>>
>>
>the drive
>
>
>>pinch rollers have turned to goo.
>>
>>
>
>Now therefore:
>
>I?m left to wonder of these rubber parts could be recast. I have had success
>casting rubber
>using Devcon flexane. It?s a 2 part mix with extremely low shrinkage. The
>medium ?80? liquid
>has a companion softener flex-add which allow one to adjust the hardness of
>the resulting rubber.
>
>I have used Freeman machinable wax to make molds with good results. I would
>think that with
>reasonable machining practice a run-out of a thousandth or so could be had
>re-rubberizing a roller
>spindle. (A human hair being about 3 thousandths of an inch)
>
>If greater precision were required a machining allowance could be added to
>the rubber and it could be
>frozen and ground after casting. (Not that I would look forward to liquid
>nitrogen all over my south bend lathe,
>and it?s not like we?re making disk heads here)
>
>The bottom line is that if it was made, it can be made. After all, some
>telescope hobbyists make their own mirrors!
>
>Your thoughts?
>
>Mike.
>
>
>
>
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Received on Sat Dec 13 2003 - 10:48:20 GMT