A few useful tips:
Idler / drive unit assembly
Follow the Official Sourcing Sheet to buy Voron parts.
The sourcing sheet is copy protected on purpose to prevent outdated copies. This way the development team can guarantee an up-to-date sheet
Voron 2.1 uses dampener on every stepper driver to reduce the amount of vibration that is transferred to the rails. However, some vibration will be emitted through side panels. To reduce vibrations in the panels the community has mostly come up with:
Note that the foam tape will add thickness such that panel anchors may need modification
Take a look at the Github mods folder. Several users designed holding clips for the coroplast panel to achive a better look
Some users applied insulation below the heater to avoid heat transfer to the electronics and a achieve a faster heatup and more uniform heating of the bed