d2k Posted January 16, 2003 Report Share Posted January 16, 2003 Well, today i tried making my own pcbs - for the first time and I messed up :(I'm using copper clad boards sprayed with Positiv20. I know the artwork has to be mirrored, but does it also have to be a negative image (so the tracks are transparent) I cant work it out...i did it like this:Printed out the the mirrored artwork so the tracks, drill holes etc are black (positive image correct?) on a transparacy, placed this on a lightbox with ink side up, and then placed the photoresist side of the board on top of that, then exposed as normal...I then developed the boards and I could see the tracks turn dark in colour (this is the resist right?), they came out nice n sharp, I then washed with water and put the boards in the tray with fC - this is where it went wrong...and i got in panic...The resist/black areas (tracks, drill holes etc) should turn to what? copper right? and the uncoated areas get dissolved, or does the resist stay on during etchin, then once all the uncoated copper gets dissolved you remove the board and scrubb the photoresist off with wirewool leaving the copper tracks behind...?If anyone can give me some pointers using the positiv20 and how the artwork should be printed (positive/negative) it'd be appreciated... I've got a load of walkthroughs and pages bookmark, and also read the guide on the site but as u've read it aint it home for me :/CheersDan Quote Link to comment Share on other sites More sharing options...
LO Posted January 16, 2003 Report Share Posted January 16, 2003 Sorry I cant help you with Photo resist methods but...The simplest & best way to ensure excellent results is the transfer toner method (cheapest too I think?) just lazerprint it on backing from adhesive labels apply some masking tape to the top surface (thanks Ian!) and iron directly to the clean copper board, then just shake round in some etch solution; done. Quote Link to comment Share on other sites More sharing options...
d2k Posted January 17, 2003 Author Report Share Posted January 17, 2003 well, i re-read the instructions took some deep breaths and started again - success! :) nice clean tracks...i done everything right yesterday cept I didnt leave the boards etching long enough which caused the initial confusion...now i just gotta make loadsa boards...great :-/ Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.