DJ Delorie wrote: >> The hardest part is the 0.3mm vias in a drill press with no >> alignment aids. >> > > http://www.delorie.com/pcb/dremel-stand/ > > although the dremel shaft itself has about 6 mil of play in it. I've > tweaked the drill helper checkbox of the PS exporter to be more > suitable for this particular use; in addition, using a pushpin or > other sharp metal object, you can pre-poke the right spot and the > dremel will wander into it when you drill. > > I can reliably drill 13.5 mil vias with a 9 mil annulus. > >
http://www.rejon.co.uk/manix_md1h.html Is the little guy I use. The 12K RPM is a bit low for 0.3mm but it is nice in terms of runout/wobble. I want to build my own spindle/BLDC one day when I have time so I can spin the bits and an appropriate speed. _______________________________________________ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user