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digital said:Whats that UV lamp used for, isn't UV light a hazard to your body :?:
How do firms(computer companies like Dell for example) manufacture their PCB's, with such great speed and precision, how do their methods differ from the methods discussed here :?:
zachtheterrible said:I'm thinking about using the photoresist method because its less messy and much easier than the toner transfer. Also, you don't have the suspense of "did it come out right this time??"
It was practical, but I want to switch methods because I want to speed up the process a bit and I don't want to scrape any more wax off.zachtheterrible said:glad to see you finally realized that the wax method just isn't practical!
mstechca said:it was practical, but I want to switch methods because I want to speed up the process a bit and I don't want to scrape any more wax off.
Nigel Goodwin wrote: Multilayer boards (as for PC motherboards) are simply double layer boards glued together, and then through hole plated to join the layers together where required.
digital said:Nigel Goodwin wrote: Multilayer boards (as for PC motherboards) are simply double layer boards glued together, and then through hole plated to join the layers together where required.
Do you mean that they plate the adjacent holes(from the two boards) through the holes to make a conductive path ?
How do they make conductive connections needed between the two glued or multilayer boards :?:
evandude said:I wouldn't call it "practical" for very complex boards... what about boards like these?
***insane picture not shown***
it seems like it would take hours to scrape the wax for a board like that! especially to get all the holes lined up properly and everything.
Screech said:As I said earlier, cut small pieces of the pre-sensitised board, and test them at different exposure lenghts.
The usual method for photographic film is to make a test strip. A thin strip of material which you cover most of with a piece of opaque material. You then expose it for a certain time, then slide the cover back a little, expose again, slide back a little further and so on. This gives you a strip of material with specific timed 'stripes' on it - rather than all seperate pieces.
mstechca said:and couldn't I juse use clamps to hold the board and the transparency together as opposed to a piece of plexiglass?