tinkergnome 927
On 2/19/2021 at 5:17 AM, schafe said:I want to print an RC car body I designed in Blender - see pic.
It looks like this are only (infinite thin) faces, so... that's an object that can't exist in the physical world.
First step: be sure that you have a clean mesh topology (remove duplicate vertices with "Merge by distance").
Take sure that all Normals are facing outwards and try (at least) the "Solidify" modifier in Blender to give the walls some "thickness".
With other words... make it manifold! 🙂 That should do it.
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GregValiant 1,342
Thin walled models present unique problems. Not being watertight on such thin walls...I don't know. You can try uploading to service.netfabb.com. It's free and pretty good. Making it watertight gets rid of one issue.
If you were to remove the side mirrors (make them glue-ons - you're going to knock them off all the time anyway) you can eliminate one problem area. If you can alter one half of the body so it has a centerline flange that fits under the other half, it will make assembly much easier. Even with tabs glued here and there, it won't fit well unless it has the support of the other half.
As far as print supports go, you'll need to play around. It's so thin that the roof is going to be a problem. Remember that the supports will need to come out. If you sweep a shape across the top of the front window to the top of the rear window it would add layers to the roof. I think that would print better and hold up better during support removal as well. I would suggest a dense support interface of 50 to 60%. I've had better luck removing supports with dense interfaces without hurting the print. When you slice it, make sure to look very closely at the preview so you can pick out problem areas before you print. You'll have a lot of time invested in this.
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