The dribble starts after the nozzle reaches PLA set temp ( 215 degrees) and extrudes by itself before starting the print. When the print starts the extruded dribble either sticks to the nozzle and/or ...
Why are thermistor types 97 used sometimes one others other times?
97 is a user defined thermistor – this is what was used to create the firmware since the other thermistors (like the 14) expects to be pulled up by a 4.7k resistor (the thermistor itself is the ...
Power Switch stopped working
There is a know issue that the screws holding the plug (with the switch and fuse) are sometimes too tight, causing a bit of bending, which in turn results in the switch getting stuck. Slightly loosen ...
First layer is not sticking properly to the bed
Layer not sticking is most of the time a bed leveling issue. Bed Leveling is not only the part to get it about the thickness of a paper from the nozzle, but also adjusting afterwards to ensure optimal...
Object height is taller than it should be (by about 1%)
The stock z steps/mm is slightly off on the default z steps per mm from the factory (405 vs 400). The math is easy: 16 (times micro stepping); 200 (full steps/rotation); 8 (thread pitch) 16 * 200 / 8 ...
Extruder or Cooling Fan is not working. How do troubleshoot?
A common issue is a broken wire going to the end points (wire got strained, bent too much or a whole range of other issues). Another possible problem is the fan polarity (red and black wires) – ...
Best Bed Leveling Practices
The gap with the springs inside – that is not a reliable way to ensure it is level (the aluminium plate below can bend separately from the warping by the heatbed, giving very inconsistent result...
Cannot connect from PC software or software times out
There is a Reset Jumper on the Melzi controller board that causes the board to reset every time the serial port (via USB) is opened. This can sometimes cause problems with the host software when it tr...
Would upgrading to a higher amperage stepper motor help with extruding?
In general, no, Amperage rating alone is not a valid indicator of a given stepper motor’s specifications for a specific duty such as an extruder motor. You have to know the system and any limita...
What are the limiting factors on How fast I can print
Here is a pretty good explanation of the limiting factors with 3d printing and speed posted by Jeffrey Meyer: The major limiting factors to the speed are dictated by a fellow named Isaac Newton et al ...