DEBBIE –
Sorry I’m a couple months late in my response…
I’ve been a “little” busy with the holidays and just now getting back into the routine again. So… in case you’re still wondering… I have a WONDERFUL tool that does most of the work here for me. It’s called a Giffin Grip. Their website is http://www.giffingrip.com, but some some reason it doesn’t seem to be working? But here’s a link for the product as sold at Continental Clay : https://www.continentalclay.com/detail.php?cat_id=398&sub_categoryID=34&PID=632

Basically, it’s a tool “disc” that attaches to the top of your wheel with three side clips. Then the three bumpers move in at the same time to automatically center & grip your pot for trimming. They also come with “arms” that stick into the bumpers. Each of these posts has a new bumper at the top that can center and snuggly hold something taller – like a bottle or vase. These bumpers-on-arm-posts also hold my ornaments upside-down so I can trim them smooth before adding the cap back on.

So again… sorry that I didn’t respond sooner. There’s always NEXT Christmas, right???