On 22 Feb 2016 10:22:26 -0800, you wrote:
>I have a miniature Unimat 3 lathe & I put a file together some time ago about using the drive belt material & making the joins .
The 3 was (IIRC) a slightly bigger version of the SL with improvements
in the ways.
Have you a link to the file? I'd like to get mine back up and
running. I have a larger one, but I need to do a bit of work on the
motor (belville washers are toast) and naturally, it needs new belts.
I've got an idea how to non-destructively CNC the lathe, which ought
to be interesting.
Although I've got something better for it, the CNC ability could be
used for small panels and etching PC boards.
Harvey
> The Unimat 3 & 4 lathes originally actually just used O Rings for drive belts but users found that high quality belts that last almost for ever can be made from the Polyurethane or Urethane drive belt material that you buy in cut lengths from suppliers. For small applications the O Rings can work fine - they do on the baby lathes - so I gave some details about O Ring sizing but the drive belt material works better & last just about forever.
>While my file was written specifically for the Unimat 3, I gave it a tidy & quick rewrite to make the information less Unimat focused. It is applicable for any custom belt job - especially for small pulleys & belts of the size likely to be used for drills for drilling PCBs.
>
> Regards,
> Brian.
>