I've been using Superconnect to set up my OpenGrid Board recently, but found a lot of models I wanted to use were made for OpenConnect rather than Multiconnect. The OpenConnect Pegs for Superconnect sort of solved this problem, but I found the shape of the OpenConnect heads made them very prone to snapping with the force needed to install them in a SuperConnect snap by hand.

This tool lets you drive the pegs into the snap while ensuring the bulk of the force is concentrated on the centre of the peg, helping avoid snapping and cracking that propagates from the sharp bottom corners (and also protecting your hands from the same corners!) You can then rotate the tool, which evenly distributes the twisting force across the bottom while stopping the connector from shearing apart at the fold line.

Handle prints flat on the bed with no supports, I used 5 Wall Loops and 15% Gyroid Infill printed with Elegoo Rapid PETG.