Help problems with petg

[Classic3d]

Having problems printing with petg. I keep getting these clumps in the print and it keeps sticking to the extruder.

[wirlybird]

You have got to supply at least the basic info of your situation. For us to just guess at the problem helps no one.

[chanman]

At a minimum please state: printer, nozzle temp, bed temp, brand of PETG.

I print PETG on my Makerbot Replicator 2 on blue tape. I have to set the nozzle temp to 245 to 250, the hotter the nozzle, the better the translucency of the model.

[wirlybird]

What brand are you using? Have you found a max temp? What speed do you like? I think I am using 3000mm/min I have mainly used eSun black for structural parts so haven’t messed with translucency etc. but have seen some nice pieces come from PETG.

[Classic3d]

The extruder is at 235C and the bed at 70C. The brand is hatchbox. I am printing at 20mm/sec. It is a anet a8 printer. The middle size is .4mm

[wirlybird]

Temps are ok to start with. What slicer?

I might work on the first layer and get good adhesion first then see about printing the whole model. Go with a .2 layer height and a .2 first layer. PETG doesn’t like to be squished. You could run the first layer temp up a bit to help with adhesion.

Check this out.

http://forum.makergear.com/viewtopic.php?f=11&t=2593

[Classic3d]

Ok I’ll try it thanks

[chanman]

I use the InLand stuff from Microcenter, less than $20.00 per roll. I use the same settings as PLA for my makerbot rep 2 and only change the nozzle temp.

[wirlybird]

Ok, wondered about that stuff.