Im making a tall mug thats basically a tall and thin hollow tube with a base (about 7” with 3 1/4” diameter). When I attach it to the chuck and turn the lathe on, it has a bit of a wabble on the end. I cant figure out how to get rid of this wobble. With it its impossible to make the internal wall evenly thick all the way around.
Anyone have any ideas for how to stabilize this mug for hollowing out? I’ve seen people use wheel stabilizer things that you can put at the opposite end of the chuck, but i havnt seen any of those in the shop
i used the miter saw to get the part the chuck clamps on to 90 with the rest. But even when i dont have the bottom touching the floor of the chuck, it still wobbles
i gouged out the part for the chuck to clamp to in the same lathe session that i rouged and sanded the outside. made sure to not take the piece off the lathe the entire session as to not change the central axis location. also added about a 5 degree angle inward to to attach point so it would hold on better
ive been trying different things and the problem persists. Think im just gona have to use a wheel stabilizer. The one in the shop is to big though.
Question, the ones Im looking at are about 100$ so could i donated one to the space and have a month of membership covered? Itd be to expensive for me otherwise for such a specific tool
@purple can you post some photos of what you’re trying to do?
You should not need a wheel stabilizer for what I think you’re describing. While really neat and cool, you can make some large and deep things without it as long as we can figure out what is causing the wobble.
One suggestion would be to try using the tail stock to create a jam chuck (lots of YT videos on the topic), which would force the mug into a stable position. It would be a two-step process: first use the jam chuck to stabilize the piece, then once it’s turning true remove the jam chuck so you can go back to back to working on the inside.
And it doesn’t even have to be anything fancy: I’ve used a tennis ball in the past, esp. when working on a vessel with a delicate rim.
My theory for why its wobbleing is because its just so dense and the weight so far that the chuck just cant clamp hard enough. The density is probably varied throughout the wood also, making it naturally unbalanced
You don’t need to spend $100 on a stabilizing jig for this.
Thank you for sending the photos. When your piece is clamped in the Chuck, ideally it is touching that yellow line. I’m drawing on the photo. That is the shoulder of your piece. In other words, your tenon is too long. Shorten it just a little bit. So when your piece is in the Chuck, it is not only clamped around the tannin, and the shoulder is pressed up against the top of the Chuck clamps.
Something I like to do to set up is loosely clamp the piece in the Chuck, bring the tail stock up and firmly press it against the Chuck, then clamped out further.
Your tenon size looks great. Other than that. It isn’t too small.
