At 01:40 PM 3/12/2010, M. Adam Davis wrote: >The difference is negligible when you are only manufacturing a few thousand. Actually, in smaller volumes (low hundreds to low thousands), going to double-sided / plated-through-holes from single-sided adds about 30% to the cost. That is based upon both quotes as well as actual PCB orders from both Canadian and Chinese PCB suppliers. Most of our high-volume stuff (4K to 10K pieces per year) is single-sided just because of that cost savings. I'll spend an extra day or two to get the layout to fit into a single layer with no jumpers (if possible) just because we and our customer recoup those savings year after year after year. dwayne -- Dwayne Reid Trinity Electronics Systems Ltd Edmonton, AB, CANADA (780) 489-3199 voice (780) 487-6397 fax www.trinity-electronics.com Custom Electronics Design and Manufacturing -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist