We've just launched our map. Add yourself by clicking here!


Extruding PETG

This topic contains 0 replies, has 1 voice, and was last updated by  Twsh 3 years ago.

Twsh twsh35

Extruding PETG

26/02/2017 at 11:16

After building the extruder, I was able to source a couple kilograms of PETG regrind. It came as-is, apparently the company I got it from washes and dries it before further processing, and so did I, although only using tapwater and an oven at about 90C for 4 hours to dry the material.
When I put it in the extruder, two problems occur:
1) even at very low temperatures (~170C) there is apparent smoke coming out of the plastic. It’s possible that this is from water evaporating, although it has a “PETG-like” smell, but definitely not as strong as actually burning plastic. I considered that maybe my temperature sensor is off, however I measured the internal temperature with a thermocouple and the values it returned were rather close to the external thermistor.
2) the extrusion is inconsistent in that every 15-20 seconds a rough, thin, ~3mm long section extrudes, which contains pockets as in the picture and is very weak

Attaching a filter screen before the nozzle does not make any notable difference.

Does anyone have any ideas why this is? The plastic shouldn’t be impure given that the company I got it from was already using it in their manufacturing process, was the drying insufficient, or am I burning it after all?

0 replies
0 subscribers
0 saved

You must be logged in to reply to this topic.

  • Folks that were just here

    Profile picture of leptitoxdiet
    Profile picture of Deborah
    Profile picture of harry mosan
    Profile picture of Over 40 Keto Solution
    Profile picture of Brain C 13 Review
    Profile picture of xavihena
    Profile picture of Situs Poker Uang Asli
    Profile picture of bandarbolaqq828
    Profile picture of ketoanapolovn
    Profile picture of Catering Delft
    Profile picture of Zach
    Profile picture of Việc làm bán hàng tại Bắc Ninh
    Profile picture of CDYD TPHCM
    Profile picture of lien
    Profile picture of Julien Moreau
    Profile picture of Milton Esteban
    Profile picture of nrh
    Profile picture of max motta
  • Recent Replies

  • Support our projects on Patreon so we can keep developing 💪