This tube holder i designed can be usefull to stabilize your big MPCNC!
Two piecies sliding one into the other so it can be adjusted too the height of a lot of MPCNC not with cnc with a z axis to high.
In the picture you see the screw with only one nut (my mistake) put two instead of one to lock the right hight :)
That parts are easy to print with the low face down on the bed!
Hope that will be usefull to MPCNC community that help me a lot :)
enjoy and share!!