Snug support failing almost every time
I'm creating a joint for my son's base. I've managed to print 3 of them when experimenting, but the having a problem right now.
I print on MK4IS, Prusament PTEG (freshly opened).
Supports necessary to print the tube:
The result:
The supports lines are very thin and often then change shape and not stick to the base, they create clogs, and it happened 3 times that it blocked the movement of the printing head, causing a layer shift. It made me to check all screws and tighten the belts.
I've even replaced the nozzle, because I've thought it's a problem with it. Indeed, the new nozzle seems to work better, but the old one was doing really good in general.
I would like to learn how to generate those supports so they're printable.
The organic supports (which i've not tried to print):
I don't like those huge branches, can i make it to just generate a support inside those holes and those tall branches?
RE: Snug support failing almost every time
What are your settings? Can you upload a 3mf project file? That way we can see your actual settings and make recommendations based on data and not assumptions. For reason unknown to mankind, 3mf projects need to be zip compressed before you can upload them here. Use your operating system's compress file command to compress the 3mf file, then use the "Attach file" button below the post editor to upload it. There's nothing in your model that makes me think you shouldn't be able to get proper supports.
Formerly known on this forum as @fuchsr -- until all hell broke loose with the forum software...
RE:
Yes to please upload a zipped project file. Personally though I would orientate that part something like this -
but angled suitably for the 3 tubes. That way there would be minimal support and it would just be on the outside bottom. Wouldn't need to extend it much at all. The small holes in the sides shouldn't need any support at all though, even in the orientation that you have.
RE:
I’ve printed on default settings. Unfortunately I haven’t saved the 3mf.
Thanks for suggestion on orientation. I didn’t consider it but sounds like a great idea. I’ll play around with it.
I’ve solved the problem by changing the support angle to 45 degrees. It prints fine.
I’ll upload the images later.
RE: Snug support failing almost every time
thank you for sharing this amazing information.
With parts like this that will be subject to concentrated stresses it can pay to add a reinforcing strut which itself can be used to simplify the print; here is a recent example:
This way you only need a tiny support painted on each open end.
Cheerio,
RE: Snug support failing almost every time
I printed a similar part for square aluminum tubing - I found the supports, even though they "worked", caused the inside surface to be so rough it required a lot of filing to fit the tubing properly.
I ended up re-printing it, and used this orientation. All the supports were painted on, solely so that the piece would have sufficient adhesion to the bed. Printed beautifully!
I also really like the "reinforcing strut" idea that Diem mentioned - if that fits the application it's the way to go.
Prusa MK4 since Jan 2024, Printables: @MikeB_1505898