Re: [CAD_CAM_EDM_DRO] Machineable wax - answer to Ian's question

Ian Wright wrote:

> Thanks Jon,
>
> Your method makes more sense, I'll work on that. As a matter if interest,
> apart from the cheapest watch cases, the holes in the strap lugs are usually
> drilled after the case is made - and only part way through from the inside.
> How do they do that as you can't get a drill aimed straight because the
> opposite one is in the way? Well, one way I've seen and used successfully is
> to use a thin twist drill in a bent tube. Find a hypodermic needle or
> something similar and the longest twist drill you can find of the size that
> just fits the needle, bend the needle so it clears the other strap lug and
> hold the needle firm while the drill does its work. Clever 'eh?

Well, a dental engine has a pretty short spindle. I'm not sure it is
short enough, but you could make a very short spindle, just a pulley
between 2 bearings, with a hole in it so a drill could fit through the
spindle. Sounds VERY difficult. maybe the reason is because the
poor method of attaching the lugs prevents them from being in alignment.
But, if the whole thing was molded in one piece, then they WOULD be
aligned.

Jon