Testprint post-mortem: Supports impossible to remove at 100 % infill (?)
Hi,
I printed a 40 x 25 mm test structure a few millimeters high that is intentionally raised on little feet so it requires support over the full area.
Material is ABS-T, which has so far not given me any issues with default settings (default 0.4mm HF nozzle, 0.15 mm structural profile, randomized seam).
The first attempt with 100 % infill gave a support structure that was near-impossible to remove from the body, short of reworking the surface completely with a carpet knife.
However, when I switched to 10 % infill, the support layer came off easily as expected.
Is this known behavior or do I need to keep looking for root causes? (trying to understand what happened).
I suspect that the heat from the 100 % infill resulted in better adhesion to the support layer than intended.
RE: Testprint post-mortem: Supports impossible to remove at 100 % infill (?)
Interesting, first time reading about this. Is there a requirement that you need 100% infill for your part or are you just experimenting? For structural strength I usually just increase the number of perimeters and use a standard infill setting (like 15-20%). Otherwise, I suppose you could experiment using a different support material but I can imagine that to be a PITA without a MMU.