coupling 8x5 5x8 cardan

thingiverse

Print the parts in their designated positions as shown on the picture. Remove support blockers from screw holes since they are unnecessary. Once printing is complete, cut out the holes. Secure the parts together using M3 screws. For one cardan, you'll need four pieces of 623 bearing. Insert these bearings into their respective holes with a gentle squeeze. To assemble each side of the cardan cross, place three jointing washers that are 0.5 mm thick. Thin tweezers will make it easier to insert them. If after mounting the cardan shaft is still not uniaxial, use a thinner spacer to correct its alignment.