Mini Lathe 3" Chuck Jaws Holder for grinding service.

thingiverse

A few days ago, I followed the instructions of a video to make a service to the chuck of my mini lathe that presented a runout of couple of thousands. The video said that with an outer ring holding the jaws to make a grinder service. The result was a real mess, instead of correcting the problem was increased to 10 thousands. The problem is that the grip should not be external because the jaws have a bit of play. The grip must be in a natural way, that is towards to the center. With my problem to solve, I found a video of an older person that showed a system created in the 40's. to do just what I require. So in the hope of saving my chuck, I decided to design and print a similar piece adapted to my small lathe. In the end, I was able to fix the mess. So I share my bad experience and the way I solved it. Warning: If your 3D printer are not perfect calibrated dont do it. Do it by your own risk.