I'll send you a sample to experiment with. I've got your address, and
will ship it probably Wednesday.
Dave
Mark Lerman wrote:
>
>
> Hi Dave,
>
> Thank you VERY MUCH for the recipe! This may indeed be the missing
> piece, though I really have no problem printing directly on the
> copper - My problem is distributing the charge on the board. I tried
> to buy some of your stuff, including the coating, a while ago, but
> you told me it was out of stock Do you have more? If so, can I buy a
> bottle to try - I can pay via Paypal at your regular site.
>
> Mark
>
> At 01:32 PM 5/4/2010, you wrote:
> >Greetings. Thought I'd throw in my 2 cents here.
> >
> >If you apply a water soluble coating to the copper, you shouldn't need
> >to modify your laser printer to be able to print directly on the copper
> >(except perhaps to compensate for the thickness of the board).
> >
> >We sell such at coating at www.laserpcb.com, and I thought I'd "open
> >source" the recipe for everyone.
> >
> >1 cup water
> >1 cup isopropyl alchohol
> >4 tablespoons Carbomer 940
> >
> >We buy our Carbomer 940 here:
> >http://www.snowdriftfarm.com/emulsifiers.html
> <http://www.snowdriftfarm.com/emulsifiers.html>
> >
> >Blend REALLY well. I use a hand-held immersion blender as found at:
> >http://www.target.com/KitchenAid-Immersion-Blender-Onyx-Black/dp/B00008GSA4
> <http://www.target.com/KitchenAid-Immersion-Blender-Onyx-Black/dp/B00008GSA4>
> >
> >Instructions for applying the coating can be found at:
> >http://www.laserpcb.com/coating.php <http://www.laserpcb.com/coating.php>
> >
> >Hope this helps.
> >
> >Dave
> >
> >
> >------------------------------------
> >
> >Be sure to visit the group home and check for new Links, Files, and
> Photos:
> >http://groups.yahoo.com/group/Homebrew_PCBsYahoo
> <http://groups.yahoo.com/group/Homebrew_PCBsYahoo>! Groups Links
> >
> >
> >
>
>
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