Homebrew PCBs

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

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 5\ufffd 
> floppy drive 
> 
> BTW. I prefer the dip system it covers both sides the same time and 
> the drilled holes are also covered.
> 
> 
> Gr. Roel
>

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
> >

--- In Homebrew_PCBs@yahoogroups.com, "mikezcnc" <eemikez@c...> wrote:
as i said 
> > > Lets talk about a dip or spin coater, any of you heart of it !!
> > > That are machines even aesy to make,

so we did - i never said lets build them
it is just another way to get a resist on

Ow Adam do you have some pictures or so online from the photoresist 
machine!!
always intersting to se homebrew machinery :)

Gr Roel

Gr Roel


I have pictures, I even spent time preparing them for proper size, 
then after I posted tehm, I was asked to make them even more 
efficient because they 'take up too much space' and it was about 30kB 
(!!!). Too many rules, Gr Roel, but since you are curious, next week 
I'll make a board to verify my brand new concept and I will attempt 
SMT standards. When it's successful, and I see no reason it shouldn't 
be, I will place it in the files section and make a big announcement.


Mike


--- In Homebrew_PCBs@yahoogroups.com, "roel_cnc" <atmelletje@g...> 
wrote:
> --- In Homebrew_PCBs@yahoogroups.com, "mikezcnc" <eemikez@c...> 
wrote:
> as i said 
> > > > Lets talk about a dip or spin coater, any of you heart of 
it !!

> > > > That are machines even aesy to make,
> 
> so we did - i never said lets build them
> it is just another way to get a resist on
> 
> Ow Adam do you have some pictures or so online from the photoresist 
> machine!!
> always intersting to se homebrew machinery :)
> 
> Gr Roel