Well, we don't really have enough to go on here... Couple of questions... After you run G28, enter M119 in the command window of Prontrface (assuming prontrface). This tells you the end stop activations. let's assume you have only X and Y end stops and the Z probe. In some situations, people have both a Z probe and Z end stop. Since I don't know what you have, I'll guess. After the Homingby thetazzbot - Reprappers
Well, I was actually referring to the weakest points. The Y axis bed thing that connects to the bearings; I changed mine (acrylix) to an $18 aluminum. I changed the cheap drill rods to premium linear rods pulled from junk printers ($5 each). So, no, I didn't suggest drastically changing the cost. I suggested addressing the weakest, easiest variables. why would you have to calibrate the bed wby thetazzbot - Reprappers
Auto-bed leveling is a crutch. It is contrived to compensate for sloppy materials, design and build. You are attempting to solve issues cause by variances in your system. Control / correct the variances, and you will not need "auto bed levelling" gimmicktry. Case in point: I have a Prusa i3 with the acrylic frame, back support "wings", and acrylic Y-axis bed mount. This is the first problemby thetazzbot - Reprappers
Check to make sure the driver chips are all facing the right direction. Make sure the motors are connected correctly On mine, the fan has to be wired correctly or it wont spin. Make sure the formware is setup correctly, it is definately not plug and play Expect a week or three of constant tweaking to get first test print rightby thetazzbot - Reprappers
What tweaks did you make to the Prusa Do tell!by thetazzbot - Reprappers