On 17 Sep 2014 10:17:32 -0700, you wrote:
>Thank you, Craig, and DJ, and Harvey, for showing me your setup's. Now I realize that addressing the ergonomics of drilling holes will be worth my while if I decide to make more than one board. Since my Proxxon rotary tool is AC powered, I will probably hook it up to a solid-state relay controlled by a footswitch so I can rapidly switch it
>on/off.
Hmmm, don't. <grin> I tried the solid state relay approach, and it
works mostly. The tool does not completely stop, but vibrates just a
little. I'd picked up a transformer run 12 volt tool, and that works
with a solid state relay. I think you need a minimum load on a solid
state relay, and what the controller in the AC proxxon presents is not
load enough. I'd go with a simple old relay.
You could easily get a heavier duty footswitch and just run the tool
directly without even a relay.
Mine is controlled by the processor that does the drilling cycle.
The main thing is that if you want to do accurate double sided boards,
the accuracy of your alignment holes is absolutely critical.
Harvey