Bushing for Z axis drives rods

Create Bushing for z axis drive rods , before the rods was rubbing on the main frame of the printer  the bushing keep the drive rods center in place and save on the life of the main frame .

i use wood filament, the extruder at 200 degrees and my bed was cold i didn't put any heat but i programmed the file path for 60. you could change it as you please.