Anyone work with or have knowledge about metal core/clad boards? The board I'm working with is approximately 2" X 3/4" aluminum core pcb, in a 56 up array. There are 3 LED placements per board.
I'm having trouble getting a consistent screen print. I contribute most of this problem to bowed/twisted/warped panels. I have the maximum support available for the screen printer. These panels are warped so much, sometimes I have a hard time getting them to stay on the tooling pins.
What are the possible causes for this much bow/twist/warp in aluminum pcb's?
Is there anything the board supplier can do about this?
Is there anyway to straighten/flatten the boards we have?
Would some sort of fixture help?
Any thoughts/suggestions/random facts about aluminum core pcb's would be very much appreciated.
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