Homebrew PCBs

On Tue, 01 Aug 2006 21:41:16 +0200, Myc Holmes <mycroft2152y@...>  
wrote:

> Nice piece of work, Stefan, getting the time / temprature curing curve.  
> have
> you tried it in your smt oven? Can't wait for the photos!
> What kind of pcb material were you using? thickness and oz of copper?
> Myc

Well, it's probably much more low-tech than you imagine...
I haven't looked into the time issue, since i felt the temperature is more  
important as long as the time is long enough. That will be a series of  
experiments for another day. What i do know is that some time is required,  
not only heating it up, that's why my results were bad the last week.

If only the SMD oven was buit yet!!
I was considering if i should build it before proceeding, but i wanted to  
get that inkjet thing going so i did not (that oven might take months at  
my speed). Also Volkan is using a plate so better eliminate variables.

I will want the oven very soon however, already having thought about the  
temperature controller in my mind...

The material is FR4 or similar (it does not have the marking and is more  
opaque than normal FR4, but it has all the glass layers). I tried only 18u  
(half oz) so far.
The board thickness was 1.5mm.


ST