Delta-Pi arms vibration dampener and belt lock bit

These are two small parts that I have designed to fit the Delta-Pi. The vibration dampener was inspired by thing # 371998 by elmuchacho. It requires a couple of rubber bands per arm.

The belt lock replaces the bit of 3mm filament that Mike Paauwe recommends with a slightly more shaped part.

OpenSCAD source is included so the thing can be further remixed.