After reconsideration I figured that the current design with just one magnet probably wont work well.<br>It is extremely important that the magnets come as close beneath the surface as possible since (magnetic) dipole forces fall off
with around the negative third power of the radius. Thus I first need to find suitable magnets before I can start printing an exactly fitting "ball".<br>Spherical cap magnets would be optimal but it seems those are not mass-produced. Cone magnets would be fine:
<i>https://www.magnet-shop.net/neodym-magnete/konusmagnete/konusmagnet-150-80-x-60-mm-n42-nickel-haelt-5-kg::11.html</i><br>But those are asymmetric and only available in one polarisation direction. Ring magnets seem not to be available with sufficient dimension variety to find good stack combinations.<br>I guess a disk magnet stack must do.
UltiErik
over 10 years
Whoa! This is an incredible job!!
Have you printed one yet to verify if it would work? (and then another, since the whole point is to have them interact)
Owner of an Ultimaker.
If you like my free products please consider donating:
Bitcoin Address: 12cuJqCNeN7hvb4AHNUSDp1nSMfpvsthx5
My related sites for 3D models are:
Thingiverse: http://www.thingiverse.com/mechadense/designs
shapeways: http:/...