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Conductive Filament (ESD)

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Hello

I was trying hard to get this filament working on my UM2 (Roberts FeederV2):

(conductive with high resistance for ESD protection)

Conductive Filament from China

It seems to be ABS filled with carbon and i was able to print some stuff with it @ around 245°C and with a lot of glue and brim

Overhangs are printed very nice

There is just one remaining problem i can't solve:

It does not stick good to anything (because of the carbon i think)

[Edit:] It warps strongly

I tryed:

 

  • on glass (some different bed levels and different temps up to 110°C)
  • on painters tape
  • on kapton tape
  • on double sided tape
  • glue stick (some different approaches)
  • reversed kapton tape fixed on double sided tape
  • [edit] on hairspray

Maybe do you guys have a nice idea how to stick this stuff to something or isn't it possible because it just warps to crazy ?

Thank you all!

DSCN3276

 

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Maybe you can add a 5mm raft, print THAT in "ordinary" PLA (on glue and 60C bed).

Then plugin STOP AT height,

Change material and nozzle (if you have that upgrade), and

possibly your material will stick to other material (PLA you printed as a "raft")

What do you think?

OOPS: if its ABS based, maybe make the raft in ABS. not PLA

 

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@ swordriff

Very good idea :) Thank you! I will try that, but unfortunately we don't have any regular ABS here, so i need to take some of my own at home with me tomorrow.

OOPS: i don't think it's an option because it needs to be conductive -> i can't print even the first layer with non conductive material or i wouldn't have nice contact on the most important surface, the bottom (want to create electronics packaging)

 

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OK i recieved now the Filament from 3dxtech.com :

DSCN3293

DSCN3295

After doing a testprint @ 245°C i was shocked.. absolutely no conductivity unlimited resistance WTF?

But then i remembered that they mentioned that you can change restistance with temperature..

So i set temperature to 260°C and this worked:

DSCN3300

DSCN3299

 

It has no warping, no shrinking, no problem to stick to the glass on 75°C bed temp. and it's strong i couldn't break it by hand.

 

Now i'm able to print my ESD protection stuff.

 

But to import this i payd about 100$ to shipment and taxes!!

 

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Actually ESD plastic can have lots of really good usages. For example fixtures for testing PCB without any risk of ESD damage. Pogo-pins (Test pins) can be inserted directly into the fixture as long as the Ohms are not too low.

Just remember if you do any RF testing ESD plastic will behave in various ways depending on thickness and conductivity.

 

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Today i found a big blob around the nozzle like i did before sometimes when something goes wrong..

..but this time it was conductive filament reaching the heater cardrige and i think it made a short between the conductors cause just at the heater entrance, the conductor was burned up and disconnected the heater un-repairable.

I made a ticket and ordered a new heater.

What do you guys think? Was it because of the conductivity of the filament like i think?

 

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Without seeing a picture, i think you have a small or big gap between the Teflon and the brass heater block (inside the steel coupler with the radial holes), causing filament to escape and encapsulate the nozzle area..

the conductivity of your filament is nowhere near causing trouble for the sensors at the low voltages we are speaking of here. maybe you pulled the cables while hot end cold... ?

 

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No, the blob was created by not sticking on the glass so the printhead took everything with him moving around and stopped after some hours without an error and without showing print finished..

i did not pulled the cables, i just removed some of the chunk wich also was going around the whole nozzle block around the sensor and heater cables.. maybe pulling off this chunk broke the heater cable..

 

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