D8 Polyhedral Die

by jlamarche, published

D8 Polyhedral Die by jlamarche Oct 28, 2012
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There are several printable polyhedral dice on Thingiverse, but the only full set:


Has very rounded corners that I'm not fond of, since they take too long to stop rolling and don't have the nostalgia value of sharp edged dice for me.

Most of the sharp edged dice on Thingiverse don't have the numbers engraved and are really just platonic solids or use non-standard designs.

There already is a sharp D12: http://www.thingiverse.com/thing:550

And a really nice sharp-edged D20: http://www.thingiverse.com/thing:551

As well as an almost sharp D10: http://www.thingiverse.com/thing:3018

You can find my first die, the D4 here: http://www.thingiverse.com/thing:33293

You can find my second die, the D6, here: http://www.thingiverse.com/thing:33307

I want to fill in the missing dice so that there's a full set of sharp-edged, old-school polyhedral dice on Thingiverse. This is my third contribution, the D8.

I place no restrictions on the use of this file or the original Blender file (attached, use 2.64+).


No assembly required, should just be able to print and go.

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I just opened both the .stl and the .blend and made sure the normals were all facing out. As best as I can tell, all the face normals are pointing in the correct direction.

 Do you know about Thingiview?
The little blue cube in the image of the STLs above, click on it and you get a 3D view.
I previously asked TV staff about the dark blue parts and they said it is inverted normals and given that I can see the inside face of the die it looks that way to me.
Also a couple of smaller spots on your other dies.

I understand why you said it, but there's something odd going on. I have opened the file up in two separate programs and turned on normals display. The object is watertight, manifold, and the normals are all pointing outward.

When I view the die in Thingview, I see clipping problems, but they appear to be because it won't let me zoom out far enough. It's possible that this is  caused by a problem in my file, but I don't think it's a problem with the normals. I've checked the file in both Blender and MeshLab and see no signs of inward pointing normals. 

It's possible I'm just not seeing it, but if there is a problem with the model, it's not causing problems at printing time for me and I'm unable to locate the specific problem.

It's also possible that it's an issue with Thingview.

Netfabb says it has degenerate faces, whatever that means.

I ran it through Netfab and repaired it, uploaded (to an unpublished Thing) and it still behaves the same. So possibly Thingiview.
Repair ended up with ~ 1/2 triangles BTW.

Ah! Didn't think to check for degenerate faces. They shouldn't affect the print (most printing software ignores them), but if I get a chance, I'll go in and clean them out and see if that takes care of it.

judging from the Thingiview you have some inverted faces.