This Attachement is for the P3Steel (Big Version, 300mmx200m Frame), but i guess it will be the same for the smaller frame types. I Designed it to match the Nema17 Motor - it holds into 4 slots, secured with 2 M3 Screws - It will hold your motor tight. 40 % Infill minimum recommended for stability.

Ask me privately for more needs or if something is not fitting. Printed for myself - works great for half n year now. No signs of wear.