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  • Heatless (cold) Toner Transfer for PCB Making

    Hey thanks for the reply! I went ahead and weakened the etchant and did get better results, but in testing out a bunch of things I noticed the problem. It just wasn't obvious. On one of the tests, when I followed the toner transfer method and wiped the print with alcohol, little bits of the toner came off from the traces. This led me to print another one and look very closely at it under magnification. The printer wasn't actually printing with full toner coverage on the glossy paper I was using. So there were very tiny holes here and there which ended up allowing the etchant to get in. I tried printing with max density and other printer setting and also tried a method I saw to even the toner out by using acetone vapor, but the results still weren't as good as using the hot iron. I also ...

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    Hey thanks for the reply! I went ahead and weakened the etchant and did get better results, but in testing out a bunch of things I noticed the problem. It just wasn't obvious. On one of the tests, when I followed the toner transfer method and wiped the print with alcohol, little bits of the toner came off from the traces. This led me to print another one and look very closely at it under magnification. The printer wasn't actually printing with full toner coverage on the glossy paper I was using. So there were very tiny holes here and there which ended up allowing the etchant to get in. I tried printing with max density and other printer setting and also tried a method I saw to even the toner out by using acetone vapor, but the results still weren't as good as using the hot iron. I also did try a different laser printer on the same paper and it had near perfect toner coverage, but it wouldn't transfer. I'll have to play around with that more to see if I can get it to work.

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