Michael Borcherds
Michael Borcherds
@mikegeogebra.bsky.social
CTO | GeoGebra

#edtech #geogebra #pyggb #webusb
Works nicely, very cool 🙏🙏🙏
October 28, 2025 at 10:40 AM
Reposted by Michael Borcherds
If anyone wants to try printing this and testing it in the real world, the model here might be more suitable: it has slightly rounded edges, and the faces are slightly inset to give more clearance when assembling it. https://skfb.ly/pzDKY
Third of a cube (assemblable, with clearance) - Download Free 3D model by robinhouston
This is exported from BurrTools with the following parameters: Unit size: 10.00 Bevel: 0.30 Offset: 0.1 Wall Thickness: 0.00 Tubes size: 0.05 Leave inside grooves: no Leave outside grooved: no Remove grooves in void: no - Third of a cube (assemblable, with clearance) - Download Free 3D model by robinhouston
sketchfab.com
July 29, 2025 at 4:35 PM
Reposted by Michael Borcherds
// Here is some OpenSCAD code, if you want to understand how I made it, or to make your own:

r = 10;
h = 60;

module hex_prism(i) {
rotate([acos(1/sqrt(3)), 0, i * 90])
linear_extrude(height = h, center=true)
circle(r, $fn=6);
}

for(i=[0 : 1 : 3])
for(j=[i + 1 : 1 : 3])
for(k=[j + 1 : 1 : 3]) […]
Original post on mathstodon.xyz
mathstodon.xyz
October 14, 2025 at 10:30 PM
Reposted by Michael Borcherds
The first prototype came out better than I expected, though there's a lot of room for improvement still.
October 19, 2025 at 3:23 PM
Thanks, it prints really nicely without supports 😮😮😮
(on P1S)
October 27, 2025 at 11:09 AM
Reposted by Michael Borcherds
A noperthedron container printed!

#mathart #mtbos #noperthedron #polyhedra
August 30, 2025 at 2:47 AM
Link is 404 for me 😭
October 25, 2025 at 7:14 AM
Reposted by Michael Borcherds
Yes to everything that has already been mentioned. Additionally, I use some geogebra constructions as well (especially for linear optics, nice interactive demos for images from lenses, and multi-sense-systems)
September 16, 2025 at 10:09 PM
peterkagey.com
October 13, 2025 at 10:48 AM
Thanks so much 🙏🙏🙏

Please check, piece 7 seems to be 404 peterkagey.com/assets/blog/...
peterkagey.com
October 13, 2025 at 10:45 AM
Reposted by Michael Borcherds
Sure thing! I wrote a blog post just for you which includes links to the STL files.
Pentagonal icositetrahedron puzzle
A puzzle on the faces of the pentagonal icositetrahedron with 3D models, STL files, photos, and video illustrations
peterkagey.com
October 6, 2025 at 1:34 AM