So, i found that the original stl of the sides part by esparapse was not completley flat and therefore failed at the first few layers. I thickend the base and made a clean cut. Works like a charm now.
Had problems with the flex-part, too. I used TPU, and the part was way to thin to hold the concrete. So I thickend the part to 2 mm. Should work better now.
| FLEX_fixed_2mm.stl |
| SIDES_fixed.stl |
