A while ago I searched for a solution for my Voron 2.4 to put it close to a wall. Came up with this PTFE Guide, that allows to put the printer 25 mm close to the wall and doesn't need to drill holes in the acrylic sheets. Based on the work of "Vision's" Exhaust Cover. It works well for me for several month now, so I share it with you. You can find the project on printables: