PETG: problem with 0.8mm nozzle

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Rockman
Posts: 70
Joined: Sat Jul 02, 2016 7:53 pm

PETG: problem with 0.8mm nozzle

Postby Rockman » Fri Oct 07, 2016 2:04 am

Ok.
I'm loving my new experience with PETG after graduating from using PLA :)

If I print the Filaments.ca brand of PETG with a 0.4 nozzle it comes out great(see pic).

I tried printing the same model with a 0.8mm nozzle and things go bad. Doesn't even stick to buildtak.

Someone on forum mentioned to just leave settings the same but only change under "print sertting" nozzle size to 0.8...this did not work.


I'm thinking if the diameter of the nozzle increases then more plastic needs to flow and heated up. Therefore there should be settings to adjust... Maybe flow rate??.. Etc

Does anyone have any experience with using a 0.8mm nozzle?, if so, how did you adjust the settings?, kindly help?.... Thank you.
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20161006_215301.jpg

Evan
Posts: 136
Joined: Mon Mar 21, 2016 3:07 pm

Re: PETG: problem with 0.8mm nozzle

Postby Evan » Fri Oct 07, 2016 7:32 pm

The only thing I would adjust is increasing the temperature. The flow rate is adjusted automatically, but with the increase in volume extruded over time, you need to heat up the plastic faster to keep up.

Rockman
Posts: 70
Joined: Sat Jul 02, 2016 7:53 pm

Re: PETG: problem with 0.8mm nozzle

Postby Rockman » Sun Oct 09, 2016 1:09 pm

I will with the temp settings Evan.
Thanks for suggestion.
R

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walshlg
Posts: 1350
Joined: Wed Mar 23, 2016 12:01 pm

Re: PETG: problem with 0.8mm nozzle

Postby walshlg » Mon Oct 10, 2016 4:40 pm

I haven't tried my big nozzle yet but I imagine that extruding more plastic will drag heat out of the extruder so It may help to slow the print speed. May also help to insulate the hotend

Rockman
Posts: 70
Joined: Sat Jul 02, 2016 7:53 pm

Re: PETG: problem with 0.8mm nozzle

Postby Rockman » Mon Oct 10, 2016 8:44 pm

Thanks for suggestions....

However, using my 0.8 nozzle with pla wood, works well and so far no clogs because of the larger nozzle. And of course half the time to print at the price of lower resolution.

R


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