Formbot Raptor Damp Z-axis Holder

This is an anti-vibration replacement for the stock Formbot Raptor upper z-axis threaded rod bearing. Take off the original, replace it with this:
- Print the zrod_holder file with ABS, PLA, or whatever stiff plastic you want with 50% infill

- Priint Flex_Dbering4mm file with flex material 30-40% infill