Homebrew PCBs

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
>
>
>------------------------------------
>
>Be sure to visit the group home and check for new Links, Files, and Photos:
>http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>
>
>