SmartRapCore longer Z slide

The older SmartRapCore printer had a Z slide too short and vibrations were a problem.
On the latest one this part is longer, but I made a much longer one (170mm long).
Sources are on Onshape, look for DenisG's copy of SmartRapCore.
The original design is from Smartfriendz, who designed the amazing SmartRapCore printer :)
Update : I added a picture to show belt mount