I found out that a lathe chuck don't fair well in a drop test. I was going to replace my chuck insert to one I can lock to my lathe but the insert that was on it was stuck so I took it out to my shop to try and get it out which I did. I tripped walking back to the house and the chuck went flying I'm not sure how high but when it hit it took a small chunk out of it and really messed up the chunk to tge point I can't use it. The jaws are really tight and I can't move them. When I put in on the lathe it has a real bad vibration. I think for the time being I'll get a PSI pen chuck to do my drilling and look at getting another chuck later on. On a positive note only the chuck got hurt our grandkids were playing in the area at the time and I'm ok too.