This topic contains 25 replies, has 10 voices, and was last updated by Matthew Hajicek 3 months, 2 weeks ago.
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Please take this under consideration. We’d all like to print carbon fiber, metal filled filaments and such.
http://e3d-online.com/is-carbon-killing-your-nozzle
Kent
Damn Solid Design@heartlander It is already under consideration.
I operate two Betas and one Production Robox.
See my 3D Hub site at https://www.3dhubs.com/phoenix/hubs/benI figured. Excellent.
Kent
Damn Solid DesignDoes this mean that it would be possible to directly print copper patterns for printed circuits?
@paulsroom no, the filled plastic isnt nearly dense enough.
It doesn’t have to be copper, it could just be a filament that is loaded with a compound such as conductive ink.
But there *is* conductive filament with which you would be able to print circuits (consisting of resistors connected with resistors). I think it is abrasive in similar way as others mentioned before. I did ask for any news on that (here and one below it) but there is no answer 🙁
source - https://www.proto-pasta.com/pages/conductive-pla#CCcoductivity
Volume resistivity of molded resin (not 3D Printed): 15 ohm-cm
Resistance of a 10cm length of 1.75mm filament: 1.8KohmIn comparison copper is 1.7E-8 ohm meters. This is many many many orders of magnitude better.
Couple that to the fact that you can’t solder to it so you need to stick your components on with silver loaded glue and it just seems easier to stick a few wisps of wire in instead.
I guess if you needed to make an antistatic box this would be ideal.
Hardened steel is not a suitable material for nozzle due to it’s low thermal conductivity. Please check out this kickstarter, they have found a perfect material for this application
@alfredanil Several companies are making very successful print heads with hardened steel nozzles.
I am sure tungsten would be a good material also, as would titanium. As I mentioned before, there is consideration happening on what will work best for the Robox.
I operate two Betas and one Production Robox.
See my 3D Hub site at https://www.3dhubs.com/phoenix/hubs/benIt seems difficult to change the nozzles of the print head because it is still plastic on the inside of the head …. and it is not possible to empty …
@bhuson you already tried?
The normal way to swap nozzles is to heat up the head and do it with the plasic molten. The trouble on the Robox is the needle valves go right down to the tip of the nozzle. You would need to be very carefull not to bend or damage them. Also you need replacement nozzles that match the internal profile of the Robox ones to seat against the valves properly. Even then the abrasive filament would grind down the needle if not the nozzle.
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