(Incomplete - work in progress...)

--- Mechanics -------------------------------------------------------------------

  Qty.   Name                             Size                      Comments
						                
* 12     Steel ball                     D=1.25mm (0.05")            Precision of G10 or better.
							             							Can be sourced from small ball bearings
							             								
* 1m     PU stretch cord                D=1mm                       e.g. 'Stretch Magic' or 'Magic String'
						                
* 70     Neodym Cylinder Magnet         D=3mm h=4mm

* 1m     Brass Pipe						OD=2mm ID=1mm
						                
* 12     M2 Screw                       M2x12mm, Counsersunk
						                
* 6      M3 Grub Screw                  M3x4

--- Electronics -------------------------------------------------------------------