bleeding syringe support/holder

This is not my idea but I created the models to make them public. 

I use glue to add rubber from inner tube on the arcs that are in contact with the bar/frame/fork/syringe

I use M4 bolt (25mm), Knurled M3-M8 Thumbscrews and M4 inserts.

I use rubber bands from Uncle Ali ("Silicone Gel Straps") but initially I've started with simple rubber bands made from inner tube.