Icosa Lampshade

20 sided lampshade


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20 Sided lampshade:
The hole in the base side is 40mm, each side of the triangles is 160mm long.

Materials and methods

This mode was created with a combination of OnShape and Fusion360. The model in the photos uses:

19x Icosa sides
1x Icosa base
12x joint

There are a couple of sizes for the joint. One with 3.1mm holes, one with 3.2mm holes, and one with 3.3mm holes. If I am printing the joints with FDM, I use the 3.3mm version. The model in the picture uses the 3.1mm hole joints that were printed on a polyjet printer.

All the side panels in the picture were printed on SLS printers (EOS P396) but it should be possible to print them on FDM as well.

I've assembled the final piece in a few different ways. Sometimes as a desk lamp, sometimes as a hanging lamp. Here a few different products you can use to set it up:

This is for hanging:

Desk version 1:

Desk version 2



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25733ce162d5056d502fa45f15f56dc0?default=blank&size=40aga1000 added this to the math collection ago
969b3eadbc2331c2e3852aea0d45ff95?default=blank&size=40toniseay added this to the Home collection ago
5254531ec2e7286ce716592aaba3ebd6?default=blank&size=40chrisboari added this to the All collection ago
59c2b986bdb861d3241220d1becbc3bd?default=blank&size=40jsmith8045 added this to the Artistic/Photographic collection ago
5a0662f4c31f36ff06838a15504daf12?default=blank&size=40Carlos31 added this to the LAMPS collection ago
6ca42ca2af49e73a9603b5d73bde218c?default=blank&size=40s_kard added this to the design collection ago
86985eb95bc26359e9136150dcbb81dc?default=blank&size=40ladywren added this to the glowforge collab collection ago
Mini img 20180413 114555Felicity published this design ago