A new one for me.
Recently I have been getting some pretty poor overhangs with PETG at around 40°. I have tried slowing the printer down to no avail.
I am not sure if it was down to the heatwave we got in the UK last week but i’ve never seen anything quite like it. I will post a pic after posting this thread.
Material is DEEPLEE rapid PETG and thoroughly dried.
I tried it on both a H2S and H2C.
Does anyone have any tips please?
Unfortunately without details on how you dried your filament it’s hard to know if it really was thoroughly dried.
Maybe it was but bad filament behavior usually comes down to something with the filament which usually is water. It may be something else but PETG is well known for needing to be dry to print well.
Can you give more details on how you dry, store, and how you verify/check dryness?
How many wall loops are you using there? Overhang performance is impacted by both the preceding layer but also any loops already added to the current layer - the idea being you do the outside loop last so it can be stabilized by the second-to-outside loop. The “collapse” I’m seeing where you transitioned back into vertical after the overhang tells me you may be using only single loop.
I’d make sure you have a minimum of 2 wall loops enabled, and sequence should be “inner, outer”.
Also, take a look at your layer height, there is definitely a sweet spot for overhangs, too little leads to curling, and too much leads to instability.
An overhang test for this particular printer and filament would not be a bad idea.
