I tested a strange coupler for my 3d printer (Anycubic i3 Mega). Does it help against z wobble?
I do not get paid to make the review by any chance.
Works also for other china printers like Creality Ender 3 or Cr-10
If you are interested check it out here: https://www.amazon.de/ruthex-Ausrichtkugeln-Wellenkupplung-rutschfeste-Klemmverschraubung/dp/B083ST5ZGK/ref=sr_1_4?__mk_de_DE=%C3%85M%C3%85%C5%BD%C3%95%C3%91&dchild=1&keywords=flexible+coupler&qid=1588256145&sr=8-4