Geeetech G2S pro mini side plade fame stabilizer brackets

I used 3mm mdf but any board should do.
I have not yet done thorough objective testing but subjectively the improvement seems significant. I can print at higher speeds with lower vibrations.

Alternative to:
https://www.thingiverse.com/thing:2429160
Inspired by:
https://www.thingiverse.com/thing:2426852