Simple Christmas Pyramid

• another christmas / winter themed design
• modeled in fusion360
• inspired by traditional german christmas pyramids (https://en.wikipedia.org/wiki/Christmas_pyramid)
• simple, minimalistic approach
• powered by rising/moving air from a heater / radiator / etc
• do not use open flames!
• uses a small magnet and some steel balls as a rotational bearing
• there are model versions for 13mm steel balls, and 1/2" steel balls ("_inch")
• the arc base structure consists of 3 parts glued together
• ther are model versions for D10xH3mm and for D8xH3mm zylindrical magnets
• you need to print "base" 3 times and one "bladering"
• model units are [mm]
• https://youtu.be/Eks_HvOsT2U

Edit 20171203
- after a few weeks, the steel balls creating the rotational joint seem to have flat spots which increase friction and stop the rotation of the bladewheel
- I added a very small steel ball (one from a 608 skate bearing) in between to decrease magnetic forces and minimize contact area
- It works better than before and spinns and spinns and spinns
- might not work for everybody, depends on how strong your magnets are

• 0.2 for the base, 0.15 for the bladering
• brim recommended for bladering part, due to thin blade structure
• I had some issues with blade warping during my prints
• no supports/raft required
• printed in DasFilament PETG