Gear Print - Shrinkage causing taper
Trying to print a gear for Powerwheels Gearbox out of PTEG material, however I keep getting this tapered affect through the first 2-3mm. (Brim material is seen still on the part here below, then you can see how the material tapers up to the left of the brim) of the print. Any suggestions for settings? Bed 95deg and Nozzle 240
RE: Gear Print - Shrinkage causing taper
I had similar issues with a gear some months ago.
Try
- lowering the nozzle temperature and bed temperature
- avoiding air draft to the part shrings evenly
- using another material
- using the anti-elephant-foot setting in PrusaSlicer
BTW, I wouldn't use a brim for gears, way too much effort removing it; the contact surface should be sufficient enough.
Let me know if sth worked, for me it was a combination of temperature decrease (Nozzle -7°C, Bed -3°C) and closing all windows.
RE: Gear Print - Shrinkage causing taper
The brim looks a lot like a raft... Could you post your project file?
If at first you don't succeed, skydiving is not for you.
RE: Gear Print - Shrinkage causing taper
I had similar issues with a gear some months ago.
Try
- lowering the nozzle temperature and bed temperature
- avoiding air draft to the part shrings evenly
- using another material
- using the anti-elephant-foot setting in PrusaSlicer
BTW, I wouldn't use a brim for gears, way too much effort removing it; the contact surface should be sufficient enough.
Let me know if sth worked, for me it was a combination of temperature decrease (Nozzle -7°C, Bed -3°C) and closing all windows.
Thanks for the info here, i have not tried this yet.
I have a boss extrusion about 1.5mm at the bottom of the Gear which I removed so the gear would profile would sit flush to the bed on my second print with success.
Even though this fixed the problem, it would be nice to have the boss (spacer) printed in the same part which I'm still pursuing. This is why you see the "raft" in Pursaslicer. I did still print with a brim the second time, but probably didn't have to.
Posted by: @robin
The brim looks a lot like a raft... Could you post your project file?
Still a noob trying to figure out best way to post my project file, probably Thangs.com right.
Anyway this is the reason it looks like a raft, as i had supports from plate and brim turned on.
AutoDrone
RE:
Removed Boss from bottom of Gear so the gear would sit flat to the bed and reprinted with success (no taper profile on the gear face). I would assume the temperature is controlled better through the part by the bed vs. elevated by the boss and supported by the raft below causing the PTEG to cure to quickly and shrink the tips of the gear. The raft was acting like cooling fins and I would assume letting cool air under the gear profile.
Thoughts? Is it possible still to print this with the boss at the bottom in one piece?
Part with boss removed below. (current solution)
AutoDrone
RE:
Still a noob trying to figure out best way to post my project file, probably Thangs.com right.
To get opinions/support on settings: Save in PrusaSlicer -> get a 3mf-file containing your model AND settings, ZIP it and attache to your post. Done.
If you want to publish/share a design: https://www.printables.com
If at first you don't succeed, skydiving is not for you.
RE: Gear Print - Shrinkage causing taper
Still a noob trying to figure out best way to post my project file, probably Thangs.com right.
To get opinions/support on settings: Save in PrusaSlicer -> get a 3mf-file containing your model AND settings, ZIP it and attache to your post. Done.
If you want to publish/share a design: https://www.printables.com
Project File.
AutoDrone