Whereas, Al Kossow wrote: good, either. the drive 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.

I=E2=80=99m left to wonder of these rubber parts could be recast. I have = had success casting rubber using Devcon flexane. It=E2=80=99s a 2 part mix with extremely low shrink= age. The medium =E2=80=9C80=E2=80=9D liquid has a companion softener flex-add which allow one to adjust the hardness = of the resulting rubber.

=20 I have used Freeman machinable wax to make molds with good results. I wou= ld

frozen and ground after casting. (Not that I would look forward to liquid nitrogen all over my south bend lathe,