Re: [CAD_CAM_EDM_DRO] Re: Toothed belts for DROs

As a regular user of watchmakers lathes, I'll second that. Every option for
commercial belting is bad. Originally they used leather belts, and some
still swear by things like shoelaces. The standard belt is a plastic thing
that you heat fuse together. Now, remember, you use a watch lathe with your
head inches from an unguarded pulley. These belts always break when you are
doing something at high speed, and the belt slaps you in the face. There
were long steel springs in use at one point (worst still) I finally
dismantled the headstock, and remachined the pulley from a round groove to a
V-belt shape, and now use a quarter inch vee belt on both the headstock to
counter shaft, and the motor segment. Never had a belt problem in years.

David M. Munro

alenz@... wrote:

> Hi Lew,
> I have a watchmaker's lathe from my 'prior life' as a watch
> maker back in the 50's and ran into the same problem as you.