Nozzle Catches on spherical shapes
After completing my kit build, I have had good success with the demo files on the Flash Card.
Now I have downloaded a small Spiderman figure and re-saved it with supports in Slic3r and put it back on the card.
However, I seem to have the same problem everytime the print gets to the round head section. The nozzle seems to touch the print and then detach it from the bed and move it around.
I have also tried another Figure design which has a separate head and body, again with a large spherical head. And it seems that at the same early stage of the sphere shape the nozzle catches the printed part?
Is it coincidence that on both prints its the early layers of a sphere that are causing my issue? or is there something I need to be aware of?
Any help / guidance would be appreciated.
Here is a pic of how far the print got on my last attempt (supports removed).
Re: Nozzle Catches on spherical shapes
Hi James,
Firstly, your bed must be well cleaned so that the filament sticks properly.
It is best cleaned with detergent and water (not acetone or alcohol).
Wipe with paper and leave no fingerprints on the bed.
If this does not help, you need to apply a Brim to the model that gives a larger surface to the bed.
Set a Brim of about 5 mm before you create a new gcode.
Bear MK3 with Bondtech extruder
Re: Nozzle Catches on spherical shapes
It sounds like that portion of the print has a very steep unsupported angle that results in a slightly curled edge that catches the nozzle.
I'm sure there are many ways of dealing with this, but one suggestion is to increase the angle at which supports are needed to try to keep the edge from curling.
Other things to try:
1) Pre-heat the bed for several minutes before starting the print job.
2) Increase print bed temperature to 65 or even 70°C.
3) Play with print fan settings.
Hope you get it to work.
Carlos
Disclaimer: I'm still learning myself.