There are several articles, posts etc on the various chuck designs for holding objects such as bowls.
I wanted to ask advice on the merits of these various means having read a number of differing posts.
I just completed my own making of a Longworth chuck. Given the wing nuts that go on the rear I had to make up a spacer to push the mounting nut forward to clear the motor on my cheapo lathe with Reeve drive and motor proud of the spindle. Although its complete I am not so sure about the safety of these chucks. I have 5 "holding points".
Then there are cole jaws with essentially similar mounting to the Longworth if one considers the rubber buttons being pressed against the side of the bowl.
Then there is the doughnut chuck with two plates one being a ring.
Can an enlightened turner shed some light on the merits of these chucks and when to use them and what to expect to achieve with them.
I have made mine, battled with getting it to rotate without a wobble after truing up each step of the way. Its good but still wobbles a little.
I want to use it to turn out the base of a pretty flat bowl and insert a disc of different wood which i have turned. Want to create a step in the cut out but the "wobble" now seems a little too much for my liking.
I will get to take some pictures and post. But I have now considered that maybe making a cole jaw chuck using my real chuck jaws and only introducing the variable of mounting the plates on the front of the jaws as a better proposition to the Longworth. But what about the other doughnut version.
Making these devices is one thing, using them another thing altogether.
Please throw you 5 cents in the ring.