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03-01-2022, 09:37 PM
(This post was last modified: 03-01-2022, 09:43 PM by arvidj.)
(03-01-2022, 10:15 AM)EdK Wrote: (02-28-2022, 10:57 PM)Highpower Wrote: Which makes me wonder how it is even possible to print those without the supports?
Yea, I don't know how the guy from Thingaverse was able to print it without supports.
rleete, you got any insight into that?
Ed
As a general guideline, a 45 degree or less overhang can be printed without support. I know I have done test prints with overhangs that large and not had any issues.
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Agree with arvidj on the supports. I would try it without them, or maybe just tree supports. I've had pretty good luck with overhangs at an angle like that.
But the strength of those vertical rods will be suspect because of orientation. They can separate along layer lines. It's not going to see much in the way of stress, but any pressure on the plate might snap them off where they fit into the grinder. They appear to be hollow, so maybe stuff a dowel in there to reinforce?
Full of ideas, but slow to produce parts
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(03-02-2022, 09:18 AM)rleete Wrote: But the strength of those vertical rods will be suspect because of orientation. They can separate along layer lines. It's not going to see much in the way of stress, but any pressure on the plate might snap them off where they fit into the grinder. They appear to be hollow, so maybe stuff a dowel in there to reinforce?
Looking at his YouTube video I assumed they were solid because the ends were covered / capped. I thought about the locking screws on the machine that hold them in place pressing (ever so slightly) on hollow plastic tubes and thought about dowels as well. But then I thought simply filling them with epoxy would work too. That I have plenty of.
Or maybe Ed's display just isn't showing the infill? None of this is in my wheelhouse. The local place that says they do 3D printing hasn't responded to my request for a quote either, so that tells me a lot right there. Not even a note that says we're not interested.
Willie
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(03-02-2022, 10:15 AM)Highpower Wrote: Or maybe Ed's display just isn't showing the infill?
There's a 25% infill so it's not hollow.
If I were to design this I'd make the vertical rod and angled attachments as separate pieces and add more infill and glue or screw them to the tray. I wish the CAD file was available for the model.
Ed
