Granted, I’m no master tier, but I thought I was familiar with nearly all aspects of tying. Yet I’ve never heard of a dubbing brush table. I was surprised when I googled images of a dubbing brush table. There are a plethora of various designs. I’d suggest looking at a bunch of them and picking out features you want. Most of them look fairly straightforward to build your own. Some look like they even have a small motor to do the twisting for you.