Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

Update:
After some more reading I went out to the shop and sanded some additonal material off the slick MDF surface. That really helped and it works a lot better now and I think will work fine for drilling. Did find while the vacuum has enough flow its vacuum level is not good enough so I ordered up a venturi vacuum generator.

The current plan is to make an aluminum fixtue with channels for vacuum flow and dowell pins for board registration. For engraving the PCB stock will be flat on the fixture for good Z height contorl and for drilling I will put some of the 1/4" MDF between the board and the fixture. If I don't get a good vacuum I will just tape off the edges of the board to the fixture as necessary.

Craig