Quote:
Originally Posted by MPaulHolmes
Probably the easiest way is to get a pcb that is maybe an inch bigger in the x and y-axis direction, "lock it down" flush to the table somehow or other, and etch the designs and drill the holes, but not going all the way to the edges (since there's an extra inch in x and y direction), flip it over "precisely", and etch the other side, and then do a final rectangular cutout to the correct size. Otherwise it causes problems, and is SUPER annoying to cut all the way to the edge. Maybe if there existed a table that has a suction on it, you wouldn't need the extra length and width.
|
Don't forget that you are going to need holes in the board anyway, just drill 2-4 of the holes and bolt it to the table with them
Then when you flip it over you just need to center it on the holes, and you can swap in new boards in seconds.
You might also be able to drill a short stack of boards all at once with a press.
(Ever read that book "cheaper by the dozen" where their dad had a job as an efficiency consultant? He is my hero.)
Quote:
Originally Posted by Roger Heuckeroth
The current Dewalt router is like 15,000 + RPM, so we are looking at a different machine to do 1,500 RPM. Maybe just a drill?
The cool thing about using this machine is that once you have the boad fixtured properly, its just a mater of hitting run. It will just take a few minutes to do a board, so it could do it very inexpensively. No chance for the "mother-in-law effect" :^) Precision on this machine it 0.0005", so the boards will come out perfectly.
|
See above, fixturing a board that is supposed to have holes in it is no problem.
Say, how big is your CNC table anyway? You could set it up to do a dozen boards at a time you know.
What is the surface of the table? If it is MDF you can use a screw and a nut (maybe a wing nut so you don't need tools), and pencil marks to align the boards.
This is a "Tee nut", if you could put some in your MDF table to accept the PCB holding screws or bolts.
http://www.yourautotrim.com/5t5.html