A simple set of spring spacers for the Mighty Mama. These are inserted into the back of the Plunger Head to take up space if you use a spring that is too short. I recommend printing these at .2 layer height with at least 4 walls, 100% infill and concentric top and bottom layers. I printed out 4, 6 and 8mm spacers so that I could test various lengths of spacer. I used a 75-80mm long k26 spring and ended up being able to fit 10mm worth of spacer which does cause some rattling but it functions really well.