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.
RE: Testprint post-mortem: Supports impossible to remove at 100 % infill (?)
Thanks, I was just experimenting with settings, no real-world print job.
And different support material, thanks for the idea. I'll keep that in mind.
I'm desperately looking for reasons to convince myself not to buy the MMU but it seems now a lost cause 🙂