Drill Speed Controller for 12V PCB Drill (Query).

[Yorkie]

I've made a bit more progress on this little project today - I've exposed, developed, etched and drilled the PCB.

I've got all the bits to hand, so hope to tin and populate the board over the next few days.

A couple of pics attached - the  first is of the board exposed and developed - the second, etched and drilled.

Thanks once more for the advice to date.