Hopefully these screen grabs will detail the feature I’m struggling with. In this example it slices fine. You can see there are 2 non-intersecting holes.
…but I’m trying to incorporate a slit, ideally right through to the front hole. It then complains about ‘floating cantilever’. I’ve tried making the slit shallower to provide more material thinking I would cut the remainder by hand using what it printed as reference but can’t seem to accomplish the desired end result. Any suggestions as a workaround? I tried orientating it different ways, still no go.
lay it on this face, so that the slit is vertical. It may still give a warning, but will print just fine. Only other option is to use support material and scrape it out afterwards
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Thanks. I tried that myself. Here is the full slit version. It gave me kind of ambiguous answer: Both ‘OK’ and the same ‘floating cantilever’ message. You are saying its a warning but not a critical error? I also should have shown the whole part because I assumed it was related to the slit feature but maybe by re-orientating a new issue arose? As mentioned if I suppress the slit no warning at all. It could print on the main face.
Ok. Wasnt sure what the other side looked like. If I had to print this, I would orient it vertical like this, turn on manual tree supports and manually do support painting under this ledge.
Its always going to give an error because of the holes, but the bambu shouldnt have problems with the hole overhangs. You can also clean up the holes with a drill bit afterwards(if the part is small enough to use a bit).
Dont run super fast, clean the plate and possibly add a brim with 0 brim to part gap.(depending on material. Pla may not need a brim
This part looks like part of a filter housing wrench. What is it? If it is a filter housing wrench, the direction of the layers are going to play a huge part in the overall strength of the part. For a wrench, laying it flat will make it much stronger than vertical. But then youll have to figure out the slit by using support material or manually cutting the slit afterwards.
Think of overhangs as actual bridges. Each end needs some sort of footing. Cant have one end floating at 90°
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I would suggest the original orientation to increase the strength and go ahead and make the slit full-sized and enable support for the slit. If you cut the slit into the model after the fact you will be cutting through the walls and exposing open infill. If you include the slit in the model with support, the support may come out easier than you think. But even if it doesn’t it will be much easier to run a saw blade through the support than through the model - and you’ll get the added benefit of getting to keep the walls around the slit.
Thanks. Just before I read your reply I thought I would try the print orientated as suggested. It looks pretty good except for this one area. So I think the suggestion for support is a good one. I’m brand new to 3DP so will have to learn this aspect. I learned there is a way to view overhang presumably to proactively deal with these issues?
What happened there is exactly the problem that comes from having floating cantilevers - the far end of it has nothing to hold onto as it’s just over top of empty air.
Depending on what the model will be used for, you could enable support for that end, which will give it a base to build that part on. Turning in back on its side would still require support, but for the slit rather than the end.
Depending on its purpose, though, strength may be important. Any model is weakest along the layer lines. Having your layers stacked like they are there makes the model weakest in the direction of allowing the entire top to break off. Turning it on its side will give you long layer lines that run the full length in the longer directions rather than the shorter directions.
Personally, whenever I get a warning about cantilevers or support, I enable support and reslice the model - then you can see in the newly sliced version where it wants to put support and decide for yourself how you want to proceed (change the orientation, enable support, print without support anyway, etc.)
If for whatever reason, you decide to cut the slit, add a modifier to that area in the slicer and make it 100% infill.