Fingers are particularly well suited to construction in polymorph as the low friction joint required for the smooth operation of the resultant hand is exceedingly easy to make simply by pinching a cylinder with a pair of blunt side cutters down into a plastic hinge.
Further reinforcing by embedding dyneema into the polymorph is also straight forward though care must be taken to pull the fibres taut and to keep them more to the sides of the hinge to improve the lateral strength of the joints.
When hand moulding the structural elements of a robot finger in dyneema reinforced polymorph it is best to work fast to avoid having to reheat the polymorph but this may take some practice.
When embedding the dyneema into the centre of the polymorph make sure the fibres are well separated and thoroughly worked-in by crimping with pliers or soaked-in by leaving in the oven.
Post time: Jul-14-2017