End Stop for Mendel Prusa threaded rod 8mm. With house, more strong and secure. Easy to print.You can help me to do more things like this. Buy my designs at pinshape:http://pinshape.com/users/27920-jsirgado The OpenSCAD file is there, you can change all.What you need: 2x screw 3mm diameter 10mm height to fix the end stop. 2x washer for screw 3mm diameter. 1x screw 4mm diameter 20mm height to fix set on the rod. 2x washer for screw 4mm diameter. 1x nut for screw 4mm diameter. You can use hot glue in the end stop, no screws.