I have used this printer for months with only minor issues, able to level the bed to get decent prints. I recently had to replace the right hot end, and while re-calibrating the printer had an issue. I did not get the cables to the right hot end set correctly and one of the wires got caught between the hot end and the stop when it tried to return to the parked position. Since then, the unit has developed a warped bed issue that did not exist before.
The problem is that during the normal auto-leveling process for leveling the bed, the nozzle is stuck on the PEI sheet at point 5 (back left corner) regardless of the wheel setting. Even with the wheel set fully CCW, the bed cannot be lowered enough to slide the paper under the nozzle. If you run the measurement process, it clearly shows that the back left corner is much higher than the rest of the build plate, typically reading .7 or higher when all the other corners are .4 or less. The center is consistently near zero.
I can’t understand how the right nozzle wire interference issue could have caused this (if it did), nor can I figure out how to solve it. Would raising the center by placing aluminum foil under the center possibly help? Any suggestions on what to try are appreciated.
I would first make sure the all axis motions are operating smoothly. After that, I would manually reset the Z axis motor heights using a fixed gauge on each side of the machine using the side rails and NOT the bed (same procedure as initial setup when new). Then, I would reset the bed’s adjustment wheels and start over. If that back corner still cannot be adjusted enough, I would compensate by reducing the opposite corner adjustment wheel.
Hi rhhollin,
if you have installed the Solid Bed Mounts for SV04, this may be the ideal time to return to the stock spring-loaded solution…
If not, you should ensure that all four bed adjustment screws are working properly.
If all bed screws are at lowest position and the nozzle would still hit the bed: Write down all Offsets, Reset EEPROM. Reenter Offsets. Retry Tramming.
If the nozzle still hits the bed: The nozzle has to be shortened mechanically. This could be done by screwing it inside: Uncover the hotend; wear gloves to protect your fingers; heat up the nozzle; remove filament; hold the heat-block using a wrench, unscrew the heat-break using pliers (1 full turn = 1mm height difference); screw in the nozzle in the same distance; insert the cleaning needle iot ensure the heat-break & nozzle are in a correct position; tighten nozzle & heat-break firm enough iot avoid molten filament spillage & gently enough to avoid a ruined heat-break; re-assamble extruder & test again.
