Quote Originally Posted by Jonathan View Post
The back plate is there because otherwise the Y-bearing mount plates are effectively cantilevered,
Not really much of a cantilever is it at 1 or 2mm and still your not supporting the cantilever but have created double cantilever ~(see-saw with bearings as pivot.!) with no bracing support.!!
Plate thickness doesn't matter could be 50mm or 5mm it's still adding very little vertical bracing support.? Plus it restricts the back side of the gantry so cable chain etc is more difficult to run.? . . . Like say IMO it's heavy, expensive, restrictive and unnecessary. . . Each to there own.!!!