I made this twistknob late in late 2018 for my Merkur Progress, pretty soon after I bought it.
I saw a few Twist Knobs and thought - "Hey I can do that....."

At the time of turning it, I decided that it would also have a magnet in the base.

How does it shave?
Like a Progress, with a different balance - They go from pretty mild to middle medium at 6. They then can be overclocked on the fly if more is needed.