I've been using the TM2 WPA sold here without a screen, and it works. But it (and the water in my piece) fill up with tiny bits of plant matter unless I grind super coarse—at which point the vapor suffers. I picked up a set of these, hoping to avoid that.
It accomplishes all of this and more. Now I can use the straw method to load the WPA without getting slapped in the tonsils with flying bits and I can grind so much finer. It's a whole new experience really. I'm running at lower temps on the dial and getting more effective and even burn. All without having to worry about pesky basket rims getting caught when removing the stem.
It puts so many of the little quirks of maximizing the TM2 output on autopilot. These should be an official part of the package from TM. I'll be ordering more so that I always have a few extra to rotate as I soak/clean the rest.
