This dual-color cracked skull design can be printed with translucent filament to let light shine through the cracks! 

See here for video: https://youtu.be/uCC3UsVzpis 


Cracked Skull

Skull.stl

This project is a proof-of-concept study of the potential of spherical cams to create complex coupled movements. See here for videos:
 
Original: https://youtu.be/yHml-AkOM3U 
“May the Fourth” Star Wars Remix: https://youtu.be/7f1xcGMAGqo 

The rotation of the outer shell around the inner spherical cam moves the followers around the equator and back and forth between the poles. Gear teeth within the cam slot creates axial rotation. The design of the cam slot and placement of the teeth allows for creative combinations of these three types of movements.

This model comes with two sample spherical cams and can accommodate up to eight followers.

The “Single Sine” cam moves the followers one complete sine cycle between poles and reverses axial rotation four times for every revolution around the equator. 

The “Double Sine” cam moves the followers two complete sine cycles between poles and reverses axial rotation four times for every revolution around the equator.

Printing and Assembly

Print out as many gears as you what, to a maximum of eight. You will need a 3/4” long 1/8” fine thread bolt for each gear. Insert the 1/8” bolts through the gears. You may need to glue these in place.

Print the two halves of your preferred spherical cam. Press the two halves of the sphere cam together using a vice. Glue is not needed.

Print one of each of the remaining files.

For best results, consider lubricating moving surfaces with Vaseline or similar lubricant. 

Slide the “Outer Shell Bottom” over the upright rod in the “Base.” Lock into place by press fitting the cam onto the hex connector of the base. Ensure that it rotates smoothly.

Insert as many gears as you can into the cam and slots of the bottom shell. Next, insert the remaining gears into the cam and slots of the top shell. This is tricky but doable! If you find that the outer shell pops of during use, you may need to glue it to the bottom shell.

Place the “Drive Gear” into the recess in the base. If you wish, you can secure the drive gear in place by inserting the “Drive Gear Pin” from the bottom.

Add some objects to the spinning followers and your project is finished!


Spherical Cams Study

Do Not Print.stl

Just what you need for a little game of b-ball!

See here for video: https://youtu.be/sNO8MSMIYjA

Files for this basketball and hoop set are provided for standard and multicolour printing. Print all files as oriented, no supports needed. 

The backboard has holes for hooks or magnets (1/4”x1/8” or 6mmx3mm neodymium). The line on the backboard is raised slightly in the standard print version to allow for a filament swap to make the line a different colour.

The halves of the balls are designed to be tight the first few times they snap together. To make them easier to snap together and apart simply file off a bit of the contact surfaces. For single colour prints you can colour the seam with a marker.

Download the full set:
Basketball: https://than.gs/m/833255 
Hoop: https://than.gs/m/833259 
Backboard: https://than.gs/m/833268 

Model in picture was printed on a Snapmaker J1 in white and orange.



Basket Smalls (Basketball)

Display only do not print.stl

This skull is part of a series that demonstrates three of the architecting features in nTopology software.

See here for video: https://youtu.be/ZX4rk4VM46U 

In this series, the Gyroid Triply Periodic Minimal Surface, Face Centered Cubic Lattice and Hexagonal Honeycomb unit cells have been applied to a conformal cell map derived from the outer surface of the skull. Using this technique allows the structures to follow the bone contours and converge on the front and back of the skull.

See here for other models in the series:
Gyroid: https://social.thangs.com/m/365047 
FCC: https://social.thangs.com/m/365043 
Hex Honeycomb: https://social.thangs.com/m/365051 

The model pictured is printed with Eryone Matte Dew White PLA filament.

Architected Skull (Gyroid)

This skull is part of a series that demonstrates three of the architecting features in nTopology software.

See here for video: https://youtu.be/ZX4rk4VM46U 

In this series, the Gyroid Triply Periodic Minimal Surface, Face Centered Cubic Lattice and Hexagonal Honeycomb unit cells have been applied to a conformal cell map derived from the outer surface of the skull. Using this technique allows the structures to follow the bone contours and converge on the front and back of the skull.

See here for other models in the series:


Stairways to heaven? Or just a thing to put your plants in? I’ll let you decide. 

See here for video: https://youtu.be/noY4YzvdlMc 

Two sizes available:
Small: https://than.gs/m/808425 
Large: https://than.gs/m/808427 



Robert Planter (Large)

Stairways to heaven? Or just a thing to put your plants in? I’ll let you decide. 

See here for video: https://youtu.be/noY4YzvdlMc 

Two sizes available:
Small: https://than.gs/m/808425 
Large:


Are they eggs? Or balls? Doesn’t really matter. They can hold chocolate.

See here for video: https://youtu.be/CviiN9vELjQ 

Files are provided in “snug” and “loose” versions. The “loose” versions slip together easily and can be opened by little fingers. The “snug” versions stay in place better but require as bit more force to open. 

The best way to print these is as oriented, with the model raised off the build plate 3mm and tree supports underneath. You will likely need to smooth the surfaces. If they are too tight, snapping them together and apart a few times will loosen it up.

Colour the lines with a marker or oil-based paint pen.

Download the full set:
Basketball: https://thangs.com/mythangs/file/796742 
Tennis Ball: https://thangs.com/mythangs/file/796748 
Baseball: https://thangs.com/mythangs/file/796753 



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Cracked Skull

Spherical Cams Study

Basket Smalls (Basketball)

Architected Skull (Gyroid)

Robert Planter (Large)

Eggball (Baseball)