Is it ok to use 3 Mini wheels on each side of the z-axis or big wheels are recommended? If yes, why? thank you.
In this Picture you can see the complete x-axis. A Pencake Nema, a BMG full metal Extruder, a proximity sensor, a 5050 radial fan and, a small 30x30 fan and the 20mm gantry plate. and on the left side a nema 17 Motor for the x-axis. Does this weigh too much? i ask because i have lines in my printed objects. The both T8 Lead Screws i have changed, but the problem persists. The heatbed and nozzle is pid tuned. The printer is a self made Prusa i3 clone with full bear upgrade. Bear Upgrade Guides (2040 v-slot Alu Frame)
You can check that your wheels didn't develop "flat spots" (Can happen when set overly tight and left sitting in one spot for too long) Also check drive pulley concentracity (cheap pulleys can wobble causing defects in XY that looks like Z banding) Other possible causes: - X/Y Belt tension - Wobbling extruder drive gear - Untuned acceleration causing harmonics - Badly rolled leadscrew - Bent leadscrew (don't rely on the wheels to constrain a bad drive system)