conductive plastics to make pcb with ORD Bot?

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conductive plastics to make pcb with ORD Bot?

Postby georgehine » Tue Feb 14, 2012 5:10 pm

hey guys just wanted to throw this out there and see if there is anyway to print a complete circuit board using some kind of conductive plastic along with the 3d printers! just a thought and may not even be possible yet!
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Re: conductive plastics to make pcb with ORD Bot?

Postby AndrewR » Tue Feb 14, 2012 6:59 pm

The RepRap project has been looking into this for some time:
http://reprap.org/wiki/Printing_electronics
http://blog.reprap.org/2009/04/first-re ... rcuit.html

Looks to be much easier to mill down copper clad board:
http://reprap.org/wiki/Automated_Circuitry_Making
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Re: conductive plastics to make pcb with ORD Bot?

Postby bdring » Tue Feb 14, 2012 7:31 pm

It might work as a photo mask or etch resist.
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Re: conductive plastics to make pcb with ORD Bot?

Postby AndrewR » Tue Feb 14, 2012 7:53 pm

bdring wrote:It might work as a photo mask or etch resist.


There's a good photo of a RAMPS board made this way here:
http://reprap.org/wiki/Automated_Circui ... Ink_Resist

;)
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Re: conductive plastics to make pcb with ORD Bot?

Postby bgracia » Tue Feb 14, 2012 8:40 pm

Try Conductive Paint. I think you can get it from www.sparkfun.com

They place leds on a wall and wire them up with the paint. Do a search for Paint on their site.

Brian
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Re: conductive plastics to make pcb with ORD Bot?

Postby khbaur330162 » Sun Mar 18, 2012 9:23 pm

Does anyone know what types of resolution you could attain in an etch resist application using two flatbed scanner/ink jet bridge assemblies and a 150mW Bluray laser diode for exposure? Anyone have better ideas to get higher resolutions keeping in mind a $100 total budget limit? Table only needs to be 12" x 12" (not even, really) and if using an etch resist or conductive ink pen could attain similar results for cheaper I'm not disinclined. Looking to recreate a circuit like this:

http://wiki.faust3d.com/wiki/images/e/e ... ragm-e.jpg

Each wave line (consisting of ~20 finer trace lines) is approx 3mm in width. Am I dreaming?

Thanks for any help, guys. Much appreciated.
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Re: conductive plastics to make pcb with ORD Bot?

Postby JeremyBP » Sun Mar 18, 2012 10:00 pm

I'm not much of an expert on lasers, but I would think that with a diode like that (and a budget like that) and trying to achieve accurate features that are 0.1mm wide, you're dreaming. But then again, that's one hell of a trace size.
There was some discussion a few years back on the reprap boards about printing with conductive plastic. Forrest Higgs looked into it: http://technocraticanarchist.blogspot.c ... r-mix.html.
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Re: conductive plastics to make pcb with ORD Bot?

Postby khbaur330162 » Sun Mar 18, 2012 10:43 pm

I guess I'm better off making a high res. transparency with a standard laser printer and exposing with a spot light. Thanks for the help.
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