why yes, I am designing my own Looney Pyramids in OpenSCAD. These game pieces are used in a variety of (mostly abstract strategy) games, and can be placed on top of each other in "trees" or "nests"

There are multiple designs on thingiverse & printables, including an OpenSCAD design.

I've printed several other designs and, unavoidably, thought "can I do this better?" My WIP has two features I didn't spot in any of the 3 designs I looked most closely at, to improve taking apart the pieces after they've been nested (a kind of stack where the 1-pip is under/inside the 2-pip, the 2-pip is under/inside the 3-pip, or both).

First, the bottom part of the pyramidal shape is replaced with a vertical surface right at the build plate, to try to ensure that elephant foot doesn't make the parts as-printed interfere when shoved together.

Second, there's an interior feature to dig a fingernail into when trying to separate a pair of pyramids.

I don't have any official pyramids but my pieces don't quite match the geometry of any of the other sets I've printed.

If I end up satisfied with the design I'll post it up on printables.

#3dprinting #looneylabs #looneypyramids #icehouse #openscad

pyramids - home

What are Looney Pyramids? Looney Pyramids are multi-purpose game pieces used for playing numerous different abstract strategy tabletop games. These colorful plastic pyramids were created in 1987 and are conceptually similar to a deck of playing cards. If you have a set of these pyramids in your bag, you'll always have a game to play! The pyramids come in 3 sizes, referred to simply as Small, Medium, and Large pieces, and are available in a plethora of colors. How Do You Play With Looney Pyramids? Games for the pyramids are many and varied.

Looney Labs
@stylus I'd suggest indenting the inside of the larger ones on opposite sides, like an oval dent, to allow prying out smaller bits with fingernails. But I didn't follow the bit about elephant foot.

@pronoiac I see what you're thinking and that's worth trying! That might be better than this "fingernail groove" I designed in the piece's interior.

At the risk of explaining something you already know, elephant foot is a very common effect in 3D printing where the very bottom layer of a print is wider than it was designed. This occurs if the distance between the nozzle and the printing surface is too small, causing the first layer of plastic to spread out further horizontally than the design calls for.

To an extent you can get rid of this effect by carefully tuning your printer or by compensating for the effect "in the slicer". But despite this, I still find that for my pyramid pieces, this little bit of extra plastic made the pieces stick together even though there "should be" around 0.15mm of clearance. After manually shaving away at the base, the pieces worked nicely, meaning that the interference problem was strictly at the bottom of the piece, not "somewhere inside".

The modification to the edge of the piece is basically compensation built into the model for this elephant foot effect.

@pronoiac something like this maybe

@stylus sorry, a pet needed Attention.

Yeah, that looks good. In the first post, I thought the notches were ridges, and that seemed fragile and unlikely to last long.

@stylus hell yeah, glad to see more love for icehouse in 2024 !