On Tue, Mar 22, 2011 at 9:39 PM, William "Chops" Westfield wrote: > > On Mar 22, 2011, at 3:20 PM, Ing. Marcelo Fornaso wrote: > > > I'm a little afraid of using this sheets on my laser printer because > > their > > surface looks like plastic... > > Sheesh. Find someplace that uses laser-printable label sheets. Or > even buy some. Use any remaining labels as ... labels or something, > leaving you with a backing sheet suitable for this sort of toner- > transfer. Any laser-printable labels will have a non-melting backing > sheet; probably silicone based. > > Try the library. Our middle school library prints bar codes on sheets > of labels for their new books. This usually doesn't fill up a sheet, > and the software doesn't support exact placement of the barcodes on > partially filled sheets, so the remaining labels get stamped with the > school name/etc for tagging magazines and such. Eventually they're > all used up and the backing sheet is thrown away. > > Some backing sheets are nicer than others. > > I prefer the destructively processed glossy magazine paper route. > The reason that the label backing sheet works so well is that toner > doesn't stick to it. Which also can mean that it's subject to flaking > off somewhere in the process before it gets to your board... > > =3D=3D=3D=3D=3D=3D=3D > > Professional PCB fabrication services get cheaper and cheaper, and > more and more convenient to amateurs. Batched hobbyist services > (batchPCB, dorkbot) have "solved" the minimum board size problem, so > that you're no longer penalized for wanting a very small board. > Direct-from-china suppliers (Itead, Seeed) are doing the cheap- > prototypes (~$20) with long lead time thing so that you're no longer > forced to use a high-priced quick-turn supplier for "prototypes." The > only remaining advantage of home fabrication is that simplicity > (single sided, 16mil design rules) will get you faster and cheaper. > But it's getting harder and hard to justify. > > BillW > > $20 with shipping and tax compared to a few dollars and instant turnaround times is not hard to justify. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .