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
>
>Blend REALLY well. I use a hand-held immersion blender as found at:
>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
>
>Hope this helps.
>
>Dave
>
>
>------------------------------------
>
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>
>
>