I would really like to be able to make my own PCBs, but I'm not allowed to do what at home because of the corrosion(i think thats the name) and I don't have any other place to do that in.
Does anyone know any OTHER way to do custom PCBs?
Jan
P.S. PCB services won't work because they are to expansive for me.
You could also route it by hand with a dremel tool and some patience - but it will be ugly, and the by-hand process isn't suitable for fine-pitch components.
Is the concern over the need for corrosive chemicals itself, or because of ferric chloride in particular? Because there are other means than ferric chloride (which is pretty nasty stuff), but they all require some form of corrosive chemical to work.
One method which I have seen used to make parts out of thin metal plate, and could possibly be used for etching a circuit board, is electrolysis. The only issue is that all areas that need to be removed must in some way stay connected during the process. I'm not sure how well it would work for PCBs, but I've seen the results for sheet metal parts in which the component layout was transferred to the metal via the toner-transfer method, so something like that may work. Copper sulfate would be needed, though (which is poisonous, but fairly safe when handled properly - just don't eat it - its sold as root killer, btw). You'd also need a hefty power supply.
Fabio: Would be great if I lived in the US and not in Sweden. The shipping costs and customs would be to high.
cr0sh: 1. What's a CNC machine? 2. I will try with my dremel as soon as I can get my hands on some boards. 3. Yes, the problem is the corrosive. 4. Has someone tested that "electrolysis" with PCBs?
CNC - Computer Numerical Control - in this case a dremel mounted on an XY frame, so the computer mills the grooves between the teacks. They can usually take the Gerber files generated by your pcb-layout program
Depending on how complex it is, you could use stick-on copper tape and just layout your design that, soldering all the joints together when done. You can buy sheets of prepunched holes, tape in various widths regular foil if want to cover a broad area.
Here is an example to give you some ideas about terms to search to find a supplier in your area.
I don't know what you're making, but I wirewrap a lot of my projects together as the expense of doing a 1-time PCB is either not worthwhile, or too time consuming when I was working full time (solved by being laid off recently, which brings me back to point #1!).
Who is telling you that corrosion is the problem? If you use ferric chloride solution, you can stick your hand in it with no bad effects (other than staining your hand yellow!). PCB etchants are designed specifically to work on metals, not flesh. You don't stick your hand in PCB etchant and only pull back the bones, like it was a tank of piranhas!
The worst that could happen is you stain some carpet yellow.
I can imagine people not wanting chemicals like that in the house.
It doesn't have to be dangerous in all aspects, it's still a hazardous chemical.
If I would do stuff like that at home, I would probably take it out to the shed and leave it there. That way if it spills or anything, all that happens is my shed going yellow.
I do mine on the stainless steel sink in the kitchen.
Ceramic sinks would be just as resistant in case of spills.
I do my etching in sealed food containers to prevent spills.
You can leave the chemicals in the sealed container till you need them again.
Food grade plastics are proof against the etchants just make sure anything used is marked "not for food use".
Ive seen no staining or marking on the surfaces and as its on the drainer if anything does spill its easy to dilute and wash down the sink.
GordonEndersby:
I do mine on the stainless steel sink in the kitchen.
Ceramic sinks would be just as resistant in case of spills.
I do my etching in sealed food containers to prevent spills.
You can leave the chemicals in the sealed container till you need them again.
Food grade plastics are proof against the etchants just make sure anything used is marked "not for food use".
Ive seen no staining or marking on the surfaces and as its on the drainer if anything does spill its easy to dilute and wash down the sink.
Gordon
Have you ever spilt ferric chloride on the stainless steel?
I though it would attack it