ABS Filament Issues

Help with printing with specific plastic filaments.
Post Reply
roepke414
Posts: 4
Joined: Thu Dec 13, 2018 11:12 am

ABS Filament Issues

Post by roepke414 » Thu Dec 13, 2018 11:20 am

Hello,

I am currently having a issue printing ABS, I have printed it a ton before on MK2S and MK3's at my home but now with a Taz6 I am having issues, this has recently started to happen. Not sure what I should tweak, I am currently slowing it down as the first step without messing with extrusion settings. But anything I should think about to try next? SEE ATTACHMENTS FOR SETTINGS AND IMAGES OF MY ISSUE

Basically it looks like the extruder is struggling to keep pace with the layer speeds or its under extruding. It only does this for about 2-5mm then it starts to print just fine. I have posted my settings and the entire printer is stock and we have a box over the whole things.

Thanks everyone!
Attachments
Settings ABS1.jpg
Settings ABS.jpg
Extruder Issue1.jpg
Extruder Issue.jpg

User avatar
mwester
Posts: 76
Joined: Sun Nov 26, 2017 8:02 pm

Re: ABS Filament Issues

Post by mwester » Thu Dec 13, 2018 11:47 am

That looks a lot like damp filament. Does it make and sizzling or hissing and popping noises while it's printing the bad area? If so, it's likely that your filament has absorbed moisture from the air, and needs to be dried out (search for various solutions to do this, ranging from a food dehydrator to an oven).

[edited because I can't spell, apparently...]
Last edited by mwester on Thu Dec 13, 2018 2:02 pm, edited 1 time in total.

roepke414
Posts: 4
Joined: Thu Dec 13, 2018 11:12 am

Re: ABS Filament Issues

Post by roepke414 » Thu Dec 13, 2018 12:20 pm

I know its very dry, the room has like 12% humidity and we keep it in a bag with desiccant packets when not used and it does not make a sizzling or popping sound when printing. Ive been told by other forums to slow down. It looks like the extruder is struggling to keep up but you would think that would not be a issue. But ABS is a pain in the butt from my experience.

kcchen_00
Posts: 1686
Joined: Thu Feb 19, 2015 12:42 am

Re: ABS Filament Issues

Post by kcchen_00 » Thu Dec 13, 2018 3:09 pm

Hard to tell... but it could be a combination of overextrusion and the initial nozzle height a little too close.

For the overextrusion, try a flow rate/multiplier of 95 - 97%.

For the initial nozzle height, its probably the auto-level is a little off. Since the auto-level depends on electrical continuity, clean the nozzle and the discs. Then check the wiper... flip it over or replace depending on the conditon.

roepke414
Posts: 4
Joined: Thu Dec 13, 2018 11:12 am

Re: ABS Filament Issues

Post by roepke414 » Thu Dec 13, 2018 3:14 pm

Thats a good idea, but I think we fixed it.

I cleaned the nozzle, the bed, and the plates.

Then I restored the factory ABS settings and then let it go and it worked perfectly.

My thoughts are that I tweaked a setting unknowingly and messed it up.

But if this happens still I will do these steps again.

One thing that happened was I was trying to chooch it way too fast 60mm/s I believe. So turned that down and were back in it.

kcchen_00
Posts: 1686
Joined: Thu Feb 19, 2015 12:42 am

Re: ABS Filament Issues

Post by kcchen_00 » Thu Dec 13, 2018 9:48 pm

Glad you sorted it out...

Check that your toolhead is secured tightly to the x-carriage... I regularly print at 70-90m/s, just make sure the perimeters are printed at 25-35mm/s. FWIW, printing at taller layer heights is the most effective in shortening print times.

roepke414
Posts: 4
Joined: Thu Dec 13, 2018 11:12 am

Re: ABS Filament Issues

Post by roepke414 » Fri Dec 14, 2018 7:37 am

Thats a good idea, I dont think my team checked the printer before they started to just go at it.

Post Reply