RnFR wrote:i'm just going to make some small guide holes before i take my unibit to it. i just want to be sure my holes are centered as the unibit kind of of floats to one side even if you have center punched.
JiM wrote:For those that don't have a small drill-press for Dremel, here is a desperately simple DIY one :
Especially made for drilling PCB !
RnFR wrote:that looks like a novel idea, but it also looks like a great recipe for breaking a bunch of drill bits.
JiM wrote:RnFR wrote:that looks like a novel idea, but it also looks like a great recipe for breaking a bunch of drill bits.
Did you notice that this rig is a flexible parallelogram, hence keeping the drill bit perpendicular to the PCB ? And as the vertical travel need not to be long, i don't think that horizontal deviation due to the flexion is a problem especially if the PCB is not rigidly clamped.
I did not try it, so i can't guarantee it won't break bits, but i thought the design is clever enough to share.
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