Homebrew PCBs

Well its all been experimental as far as times and temp..
But been using 275 - 300 degrees for 20 minutes or so..
So far anyways..

Randy - N2CUA

OK .. not really sure that is whats going on here.. 
But its the subject line used before .. 

Update.. 

Was making a HV Power Supply Capacitor board..
Some minor flaws in the toner .. So I used a permanant 
maker to fill in . 

When I have done that in the past. Seemed like etchant
still seemed to get thru .. I even let it dry and reapplied.

OK .. with the Cap board.. I did the same steps but in
addition to it .. baked the board at around 250 degrees .. 
for about 30 minutes .. 

Etched and there was absolutely NO signs of the etchant
getting thru the marker ink.  In fact, those areas looked
just as good as the toner covered areas.. I think I also
applied the marker one more time after the bake and
the board was cooled.
Soak time was about 10 minutes..

Soo .. for what all that is worth .. :)

Hope it helps someone, somewhere.. 

Cheers

Randy

Yep, Randy - allowing the ink to dry really good,then covering with a second (or 3rd) coat does help.  I've never baked, but have allowed to dry long enough to allow recoating and it does help.

Isn't this stuff FUN!!!

BTW, what's the HV board for?  I've just finished a prototype HV board for a 3200 VDC supply for a GS31B with 10 caps and bridge diode setup.  Drop me an email if you wish.

73 de Ken H>

ok will do .. as I also made a diode board .. 

Thanks Ken

--- In Homebrew_PCBs@yahoogroups.com, "sailingto" <sailingtoo@...> wrote:

>
> Yep, Randy - allowing the ink to dry really good,then covering with a second (or 3rd) coat does help.  I've never baked, but have allowed to dry long enough to allow recoating and it does help.
> 
> Isn't this stuff FUN!!!
> 
> BTW, what's the HV board for?  I've just finished a prototype HV board for a 3200 VDC supply for a GS31B with 10 caps and bridge diode setup.  Drop me an email if you wish.
> 
> 73 de Ken H>
>