Hello,

The Rhombiminx as always been one of my favorite puzzles, for solving, and for looks. The problem is that it started out too darn big! The mini rhombiminx was definitely a great improvement, but I wanted to see if it could go even smaller. So, I went about designing my own rhombiminx, to what I believe is the smallest a cast rhombiminx can be made when based off an ES mini 2x2 (minimum 2mm thickness, obviously I could go smaller with a full SLS print.) The final completed puzzle will be about 72 mm tall, or about 31 mm on an edge. Also, one thing I love about this design is that all the pieces can easily be cast with a one part mold. So, I present to you, the raw FDM masters:

This is cool. I think you should add some size reference pictures though.

I think it could be smaller. What if you were to use an ES mini 2x2 as a core?

Whoops, I meant to say ES mini 2x2. It's already based off of one. The open cubie spot you see in the first pic is the size of a ES mini 2x2 cubie, or 12 mm. I will add some size reference pics after the parts are done drying from their solvent bath.

Wow! That's a LOT smaller than I thought! Very well done Keep up the good work.

All right, here's more pics:

The mold:



Gluing the parts on:



Assembling half the puzzle:



The whole puzzle assembled with the glue drying:



Now I'm gonna go cut me some stickers.

wow thats small!

looks great!

Alumilite molds are the worst! Get some oomoo.

Yes, that pink mold does look kind of rough and fuzzy
Looks great though!

-Mark-

The fuzz is just uber-thin flash that I didn't bother cleaning up after the last casting. And this isn't an alumilite mold, it's Mold Max 30, which is FAR superior to Oomoo.

Nice improvement! I also have contemplated making a smaller version of my mini Rhombiminx but I really like the size of the original (mini) version. Since that would make my third revision of a simple mechanism I figured it wasn't worth trying.

I can't wait to see a video of movement though.

I started out with alumilite and it looks identical.

Right now movement is indeed rough, but even in just the last few minutes, it's gotten much better. I'll make a video once it turns half-decently.

Finito! I love how with today's technology I can design a puzzle, and then 4 days later hold it in my hands.

how much were the masters?

Printed at my school, about five bucks.

Was that just masters or the entire puzzle? I'm sure an SLS print would be extremely cheap!

Actually, according to my calculations, a full SLS print would be about $129. I was just saying that my school has extremely cheap 3d printing.

Did I ever mention how much a value you as a friend? Mainly for your generosity

Video added here: http://www.youtube.com/watch?v=ioM5uOf7lvQ

And thats REALLY tiny!!!