support material adhesion problem - How do I print this? (Printing help)

RE: support material adhesion problem

hugo1411 — Wed, 23 Apr 2025 13:17:58 +0000

THX for this tipps. The Y-Belt was a little too tight. I adjusted it and will try again.

RE: support material adhesion problem

miroslav.h4 — Mon, 21 Apr 2025 19:51:13 +0000

Just an idea: Why don't you turn the object 90° with the hemispherical handle up? In my opinion, no supports will be needed, because the printer must handle the bridging dimensions even without supports. And even the side hooks will print the same as in the original position.

RE: support material adhesion problem

JoanTabb — Mon, 21 Apr 2025 18:59:52 +0000

Hi Hugo,
I have loaded your project file into Prusa slicer and sliced it for PETG,
this gave me a Bgcode for a Mk4 printer with MMK3
I Loaded the Bgcode into my Mk3.9 printer and tried to start a print from the LCD Panel, the printer told me that the file was not 100% compatible, which is no surprise, because my printer is slightly lower performance than yours. (YOU have high definition X and Y motors....) however that is not directly important, because the actual gcode instructions for movements would be the same for either printer and the printer firmware uses the appropriate steps per millimeter...

the file printed without problems by the hole.
and the supports between the top and bottom surfaces broke out reasonably cleanly.
when I removed the part from the build plate, the supports under the semi circle, broke off the model and stayed on the build plate.

so it looks like a printer issue rather than a slicing issue. the slicer uses very thin extrusion for supports, could it be that your Y Belt is a little loose and the strands of support are nor aligning on consecutive layers?
regards Joan

RE: support material adhesion problem

hugo1411 — Mon, 21 Apr 2025 11:30:54 +0000

Here it is

Problemfile

RE: support material adhesion problem

JoanTabb — Mon, 21 Apr 2025 11:27:34 +0000

Hi Hugo, can you provide a copy of your project file
Prusa slicer,
File> Save Project as...
this will give you a .3mf file,
then ZIP the .3mf fila, and attach the ZIP File to your next post please

regards Joan

Posted by: @hugo1411
Hello,
i've searched the forum, but didn't find a solution for this problem
only the support material doesn' adhere. The rest works fine.
Do you have tips for me? THX

support material adhesion problem

hugo1411 — Mon, 21 Apr 2025 11:06:53 +0000

Hello,

i've searched the forum, but didn't find a solution for this problem

only the support material doesn' adhere. The rest works fine.

Do you have tips for me? THX