Homebrew PCBs

Hey Stefan,

Lighten up a little bit and stop kicking a dead horse, you made your 
point. Not everyone wants to or has the room for the guts to an old 
laser printer attached to a chicken barbeque motor on their 
workbench.

True its a valid way to go, but a PITA to build. Some of us would 
rather just buy a laminator that works. To each his own.

As far a double sided printing, the folded paper works fine. 
Silicone anti slip is just extra work. If you must tie the silicone 
coating into the process then put a strip along the edge of the RPP 
to prevent movement!

Let's keep this a open discussion of the many ways to improve 
homebrew pcb's rather than forcing one method on us all.

Myc

--- In Homebrew_PCBs@yahoogroups.com, "Stefan Trethan" 
<stefan_trethan@g...> wrote:
> On Thu, 26 May 2005 22:26:57 +0200, Robert Hedan  
> <robert.hedan@v...> wrote:
> 
> > Has anyone figured out how to align the 2 sides for single-pass 
transfer  
> > for
> > 2-layer PCBs?
> > Silicone is non-stick, I'm not sure how to keep the 2 sheets 
aligned  
> > through
> > the laminator.
> > Robert
> 
> 
> luckily, if you coat the pages with high-temp silicone yourself it 
is  
> everything but non-stick, you can't slide a page coated in that 
way  
> against a smooth surface. (Kind of like the rubber mats for old 
people to  
> put in the bathtub so they don't slip).
> 
> 
> But, my method of choice uses a sheet of heavy paper (thin 
cardboard) that  
> is folded in the center.
> 
> Your printouts must have a 3cm+ excess paper on one edge (same 
edge).
> 
> Align your printouts against a light source, no pcb inserted or 
anyting.  
> hold together with right hand on the center of the printouts.
> Now open the folded cardboard with left hand, and put the 
printouts in it  
> with the excess paper in the fold. hold the things together, from 
the  
> outside of the cardboard, over the excess paper. now open the 
printouts up  
> and slide PCB in (take care to get the component legend on the non-
copper  
> side if you do one side copper and one side legend, don't ask...). 
now  
> hold together over the PCB (from outide the cardboard) and feed 
into fuser  
> with folded edge first.
> 
> I usually give it a second run without the cardboard, for the 
added  
> thickness makes the heating take longer (I turn the thing over for 
the  
> second run).
> 
> It works well.
> 
> What i wonder sometimes is if it would be easier to sand one edge 
of the  
> board to a centered sharp edge and simply fold the paper over..
> 
> ST