Homebrew PCBs

Coating is no problem: rotational, inertial, even, sprayed, smoothed, 
temp controlled, etc. If coatings are not available, then you make 
them. You can always buy a photoresist and spray your boards. The 
problem is that when you do the math it comes out that it is 
economical and less problem to buy already coated PCBs. I could tell 
you how to make this process economical, simple and at home while 
watching TV but I would have to kill you  ;)  Mike

--- In Homebrew_PCBs@yahoogroups.com, Adam Seychell 
<adam_seychell@y...> wrote:
> Before considering making one of these machines first lets find 
> if liquid photo resists are available in quantities suitable for 
> hobbyists.
> If not the resists are available then we stop thinking about the 
> idea.
> If they are readily available then we can start to consider the 
> coating methods your described.
> The dry film resists are easier to apply, but still requires 
> laminating equipment. I'm almost finished building my photoresist 
> machine.
> 
> roel_cnc wrote:
> > Hi to all 
> > 
> > Lets talk about a dip or spin coater, any of you heart of it !!
> > That are machines even aesy to make,
> > 
> > dip-
> > as it say's dips the cu clad board in a tank and pulls it slowly 
out 
> > to make a even layer on (i try't one,it works great)
> > its real easy to make with a slow turning motor and eventualy 
some 
> > simple plastic gears travel time i mesured was ab. 30cm/min
> > Have somewere a drawing from it.
> > http://www.conformal-coating-machines.com/pages/5/index.htm
> > spin-
> > Heck lets take a fast spinning motor mount a plate on it (similar 
as 
> > a grammophon player) i build me first 12 years ago from an old 5¾ 
> > floppy drive 
> > 
> > BTW. I prefer the dip system it covers both sides the same time 
and 
> > the drilled holes are also covered.
> > 
> > 
> > Gr. Roel
> >