X Motor mount and end stop and lead screw mount and linear bearing mount for Anet 3D "Anet A8" model Prusa i3 3D printer aka "Omni" aka "m-505". Acrylic framed printe with 5 button next to LCD : may be the same printer as "senhai", "hesine", "kaleep", "kakeep" and othe? but not printe with rotary switch next to LCD screen, such as "geetech", "sunhokey" etc. SketchUp model, used 36, 24, 12 sided polygon rather than circle or arc for easy editing. used minimal bevel or chamfer for same reason. every dimeio are precisely entered manually in millimeter units. X rod hole diameter motor end = 8.4mm (rod diameter = 8mm) x rod hole diameter idler end = 8.6mm Linear Bearing hole diameter = 15.2mm (bearing diameter = 15mm) Lead screw hole diameter = 11mm (lead screw diameter = 10.2mm) Lead screw M3 bolt hole diameter = 3.4mm (M3 bolt diameter = 3mm)