A customizable OpenSCAD model to generate a servo arm that exactly fits your needs. It is based on the work by Paul Barrett and Charles Rincheval. I added the splines for SG90, SG90TP and HITEC A1 ...
My brother did again some 3d print parts and I did ... we recommended using MG90S servos instead SG90 plastic servo, or maybe using better servos, also the hexapod config will be better, but again, ...