Parametric Towers of Hanoi

thingiverse

Printable six-disk [towers of Hanoi](https://en.wikipedia.org/wiki/Tower_of_Hanoi) set. Modifications ------------- As designed, this set barely fits on the 270mm-long bed of my printer, so if you do not have 270mm in at least one axis you may have to modify this. You can try printing the disks separately and printing the base across the diagonal. The easiest way is probably to separate the pieces in the slicer and re-arrange them there until they fit your printer. While this set is designed to work for disk thickness down to 3mm, in practice even the 5mm default thickness is about as thin as is comfortable to manipulate. Because this set is designed to preserve aspect ratio, you will need a large printer to print this set above the default 5mm disk thickness, or you will need to explicitly change the aspect ratio. If you print posts, the `post_radius` should not be much less than 5mm, at least with PLA. PETG might be sufficiently strong with thinner posts. If you do not print posts (the default), you'll have to drill holes in the bottoms of whatever you use for the posts. You can set a non-zero `post_offset` to print a pocket for the posts (in which case you will almost certainly want to use a lathe to exactly center the hole in the rod), but make sure there is some room between the bottom of the pocket and the head of the screw so that the post doesn't easily tear out of the base. If you do this, you might need to increase `base_height` to accommodate the additional thickness required. When rendering, OpenSCAD will print out the post height it expects so that you can cut rod to the appropriate size for the posts. You may want to chamfer or round the top of the posts to make it easier to slip the disks on the posts. Note that in OpenSCAD, F5 preview will show a stack of disks on the base (and the posts if not printed) as "background", which can help you make sure that the parameters you have chosen will work well. You can print an extra set of discs in a second color for [two color towers of Hanoi](https://www.cut-the-knot.org/recurrence/BiColorHanoi.shtml). If you do that, increase the size of the posts by at least two rings. I have enabled the customizer, but it currently fails to render. Files kept at [github](https://github.com/johnsonm/hanoi)