Small five intersecting tetrahedra sculpture

[shiying]

Hi everyone, I remade this piece with acrylic, which looks nice to me.

The pattern for 0.25mm kerf is

I have also made a video of how to assemble. It’s a very enjoyable puzzle!

Five Intersecting Tetrahedra Sculpture

[deirdrebeth]

[dehne1]

Very nice, indeed. Much harder to design than it looks, I’m sure. And thanks much for sharing it!

[ellencadwell]

The acrylic is pretty! Thanks for the share!

[dklgood]

Thank you!!

[ptodd]

Very cool! Thank you for sharing … and for adding your video!

[pubultrastar]

Love it. Assembly on these hollow polyhedrals can be tricky. Nicely done!

[reynoso]

Thank you @shiying for your share. Your projects are always stunning!

[timjedwards]

Thanks for the share!

[ptodd]

Happy cake day @reynoso !!!

[kelley1]

Happy Cake Day!

[geek2nurse]

Oooh, it’s been a while since we had a nice polyhedron! @evansd2 and @pubultrastar created some amazing ones back in the day.

The transparent acrylic was a nice choice for this one!

Edited to add: Ooh, y’all should go look at @shiying’s Instagram!

[reynoso]

Thank you @ptodd and @kelley1.

@geek2nurse

back in the day.

That was just a few years ago, yet it seems like time flies.

@evansd2

Ahem… This one was in August.

I stand corrected by @evansd2, a few months ago. However @pubultrastar did say that he was retiring from polyhedra, although he is now 3D printing them with some cut parts in them.

And time still seems to go faster.

[geek2nurse]

Faster and faster, the older you get!

[evansd2]

@reynoso

a few years ago

Ahem… This one was in August.

1/16" plywood source

I recently got some 1/16" plywood, mentioned here: I’ve had a chance to use it, so here’s my rough review. The 1/16" plywood seems to be good quality, the surface is sanded nicely, and there are no loose wood fibers. It looks like it’s birch but that’s hard to say. Dimensions are not 12x16, they are 11.75x16.5 This suits me fine, anything over about 11.25 inches is easy to place in the performance bed. It cuts quickly. On my pro it’s 320/full/1x, and I think I may be overpowering it. I b…

This one too:

Walnut twenty sided die

I’ve been working on a dice project for a long time, and I could never really crack how to get it down to be the correct size for typical RPG dice. Well, I’ve cracked it. [IMG_8201] [IMG_8204] [IMG_8205] [IMG_8206] Birch plywood internals and PG walnut veneer surfaces with painted engraves. Onto the rest of the set.

(And I made several others that I never published around that time too! )

The 5 intersecting tetrahedra model is almost a rite of passage in polyhedra, it’s tricky to assemble, the forms weave together.

I never did one, and I also skipped the frabjous, in favor of a couple of other builds that sort of push the same boundaries as the interlocking tetrahedrons.

• There were these woven edge models that are sort of like tensegrities:

Featured here:

Newest geometric builds

If you’ve seen my other posts on this family of builds (I call them my “creatures”), these aren’t he most complex models but I do like them both. The larger one is the physically biggest model so far. (Even bigger than the one you have, @ylene ) [image] [image] [image] [image] [image] [image] Notes: I assume the pictures will upload out of order. Stupid discourse + iPhone combo. Apologies for the lack of banana, I need to go to the store. As always, no glue was harmed during the ma…

• And these guys, woven intersecting octahedral forms.
  

Featured here:

Feathered Octahemioctahedron

Happy birthday! I’m Frosty! [IMG_5024] Latest creature, combining a couple of techniques from previous models — interleaving of fingers and traditional edge connectors. 48 faces of two different types, 120 connectors of three different types. As always there are some fun symmetries that you get as you move around the model, here are some pics. [IMG_5021] [IMG_5020] [IMG_5019] [IMG_5018] [IMG_5025]

• And then there’s these, which are maybe closest to the interlocking tetrahedrons – I don’t even know what to call them. I go into the geometry for each of the 4, they’re tricky enough that I have never built another after I did this

Featured here:

Topological polyhedra

Hi, I’m Louisa and this is Abagail, Anna and Elizabeth. [IMG_6574] These were all inspired by @pubultrastar’s exploration into a set of shapes in the app Stella. I decided to see if I could do some similar shapes with a pure laser construction, and this is what resulted. Louisa: This is a stellated rhombic dodecahedron, an interesting shape I hadn’t seen before. [IMG_6566] Puppy nose for scale. [IMG_6567] Abagail: I decided to go a little further and did a true stellated regular dod…

[shogun]

Very cool. Thanks for sharing.

[shiying]

That’s a lot of treasure!

[geek2nurse]

@evansd2

Ahem… This one was in August.

I didn’t say WHAT day, or how far back.