My first CNC project is going to be for automating the drilling of holes in pcb boards.
Looking at the number of posts in other areas I figure this is something other forum members have worked on in the past. How do you clamp the pcb to the work table (figuring a basic CNC router) and how do you gap the pcb from the table so that the bit does not mar the table?
A basic solution would be to have a sacrificial board of some sort (mdf or whatever) to take the damage. This is what I currently use when doing the boards by hand.
For thicker boards I'm envisioning a clamp type system that holds the edges only. I've seen something like this in the past but google is not being kind to me today.
Has anyone played with this problem?