Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

One remark, please use respirator & gloves when handling xylene.
The stuff is 100000x more carcinogenic than we knew pre 1990.
I remember working in billboard printshops mid 80s and shoving my arms bicep deep into 55 gallon drums to clean off ink.
Wondering whats going to get me down the road.

Corey

DuWayne:

Thanks for the detailed account of your heatless toner transfer experiment.

As I suspected, the need or exotic materials is not required.

There are many materials that will dissolve the polymer particles

that make up laser printer toner, and the alcohol mix-in is used primarily

to reduce the effectivity of the solvent so that it softens, but does not completely

distort and weaken the image too much.

Xylene is a good choice because it is relatively inexpensive

and readily available. Same for denatured alcohol, and I think

that ordinary drug store 70% or 90% isopropyl alcohol should

be OK.

The alcohol  is also effective in cleaning the bare PCB material.

I plan to try to duplicate your process sometime this week.

Thanks

Roland F. Harriston, PD

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