FreakyFoot V2 - anti-vibration damper feet (HULA)

This is my variant of an anti-vibration damper feet (based on the HULA seismic damper concept). The idea is to damp fast movements only in x and y direction but be stiff in z direction.  

I printed it with ASA, Nozzle 0.4mm, Layer Height of 0.2mm and 5 Perimeters. I have also tried it with PETG or ABS. Use TPU as rubber for the bottom so that your feet don't slip.

Changelog

• Version 2.2

  • Minor Plastic Spring stability improvement

  • Minor increase of the screw hole size

• Version 2.1

  • Add additional fillet spring start/end

• Version 2.0

  • Full redesign of V1

  • Same properties, but  further minimized dimensions

  • TPU Damper is replaced by integrated printed spring

  • Removed V1 description

• Version 1b

  • Beautifying:

    • Replaced the bottom insert (foot)

    • Replaced the bottom TPU with a less visible one (see comparison picture)

• Version 1a

  • Initial version

BOM (per foot)

• 1x M5x16 BHCS Screw

• 1x Axial ball bearing F8-22M (e.g AliExpress)

Look at the pictures how to assemble the foot. Make sure that you use the axial bearing the wrong way round - the balls must run on the smooth side - not in the actual bearing groove.

Feel free to use longer screws or to add some adapter plates/washers for the printer of your choice as a remix. 

Caution

Be careful not to put your printer on its feet when you tilt it. The springs can withstand vibrations very well, but only minimal stress from the side. Also make sure that the two bearing shells are pressed in cleanly and horizontally, otherwise the feet will not work properly.

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