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I just made my first toner PCB and did it double sided. It was a very simple design for my current transformers. I have a problem now that the toner cain't come off. It did a great job at preventing removal of copper though. Next I'm gonna try the same method to apply a solder mask and silk screen with a color laser printer.
This is my final board. It has the silk screen but it didn't turn out that well.
Registered Member #79
Joined: Thu Feb 09 2006, 11:35AM
Location: Arkansas
Posts: 673
Man, that looks awesome for a first try. IIRC, you can rum something oily over the "silkscreen" to make the white part go away. Or, you can use photo paper with a higher plastic content. Don't expect that to work perfectly though. But I pretty much go without silkscreen, it's too much trouble.
Registered Member #63
Joined: Thu Feb 09 2006, 06:18AM
Location:
Posts: 1425
Rocketry76 wrote ...
I tryed all of those and they didnt work byt I got it off with steel wool
(Tried!)
Acetone is guaranteed to work; steel wool may rip up the copper tracks, and probably thins them anyway. Give acetone another go. It does work immediately.
Registered Member #79
Joined: Thu Feb 09 2006, 11:35AM
Location: Arkansas
Posts: 673
The thing about acetone is that it evaporates quickly, and even though the paper towel still feels wet, it may not remove the toner. Move quickly, and if that fails, try pouring it directly on the board and see what happens. When I was using plastic backed photopaper, I had to try relatively hard to get under it, then it just came right off...
Oh, and not to be mean, I like you,but I've got to back BP up, we do have spelling rules around here. You can always cut and paste from MS Word.
Sorry for the trouble I should have spell check on that. Thanks Ill try using acetone harder next time (I'm almost done with my new drive circuit and the tracks are thin I'll post it when I'm done for feedback).
Registered Member #593
Joined: Tue Mar 20 2007, 12:32AM
Location:
Posts: 50
Daniel,
Nice work on the board and CT's. I would not mind trying out the PCB mount CT's for my DRSSTC-1 also, but I have a bunch of medium ferrite cores from Electronic Goldmine, so I'll probably just cascade them with 4 of those. I am getting ready to build my half bridge as soon as I order the TVS and Zeners from Digikey. But in while I am waiting for those, I'm gonna etch a board for a few SISG sections...just to use up some spare TO-247 IGBT's I don't need for DRSSTC work. My SIDACs are on the way and should be here soon. Anyway, my point is that the toner transfer method would probably be ideal for the simple SISG boards...unless I just end up drawing it freehand with a sharpie then tinning with solder.
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Current Transformer PCB
