Today I needed a board.... NOW...... so I made one.
Wish I had through hole plating, but that would only have added some
more time, I hand wired the via's by riveting soft copper wire into the
16 mil holes.
SMD C's and R's are 0805
Transparencies exposed in my workshop normal room lighting, printed
using HP laserjet 1100, in the ground plane area I can see light through
it, it look grey when held up to room light. Notice the ground plans are
clean and show not problem with what many would say was not dark enough.
http://hans-w.com/before_touchup.jpg Shows a scrap of double sided
board I had, who knows how old it is ! Exposure
http://hans-w.com/before_drilling.jpg just to give an idea of how
cleanly it came out of the etch.
http://hans-w.com/before_riveted_vias.jpg drilled using drill press and
Dremel drill, ready for wire via's
http://hans-w.com/board_riveted_vias.jpg wires in place and riveted,
before soldering not nice but it's stable.
http://hans-w.com/board_assembled.jpg all SMD parts added and cleaned.
OK so this only has everyday 0805 and 10 mil traces nothing super
small. Notice where possible I make via pads as big, I like to make it
easy for myself.
So... the edges may not be razor sharp, but I'm fairly sure the
electrons are not going to complain about that, I think they like the
silver plating...( I used CoolAmp)
The point is, making everyday boards does not require rocket science,
special printers and all that. Just get to know you Light source,
distance and
the Lye developer and you can made boards like this all day long.
Could I have done it with an inkjet printer, well I'm sure I could, but
the LJ prints the artwork in 20 seconds, none of my three InkJet and do
that !
If anyone has a problem with this kind of board lets hears some sensible
arguments, tell me why it's not going to work, and explain the reason
please...
As far as I'm concerned the issue that Laser Jet's are not good, is now
put to rest once and for all.
I suspect the people that tried LJ's may have had poor results because
of bad media, or toner cartridge may have been low, or both.
Have a good fourth...
Hans W