The only drawback is that you need to home t z max and for printing go down again. You would simply home z first then xy and would never hit anything. Also you have no problems that a tilted bed hits the nozzle/probe while homing. if after a pause the motors were turned off and you might not trust your current position. This allows rehoming during a print, e.g. The best solution for printers having a z-probe is to home to z max. So recomputing the rotation will NOT reset the distortion map. Also since 0.92.8 we assume that distortion never changes, since it is a bed property. It works by measuring a distortion map and storing it in eeprom (ideally) or ram (then you need to measure every time). This feature is called distortion correction and since 0.92.8 it is available for all printer types. That would help a big deal with correct bonding. In more extreme cases, especially with increasing bed sizes, it would be great to be able to follow the curvature of the bed for the first layers and remove that correction to zero with increasing z. With some luck the average bump is negligible and you can ignore it. Then you must limit measurements to 3 points for which you set the bending correction.Įven with an average plane for rotation, you still have bumps. This is a bit limited especially if bending is not a linear function of x and y. For this we have a bending correction, that corrects measured values by bending. With z probes that require some considerable amount of force it may bend the bed depending on the position. If that is a problem with your printer, you would measure a n x n grid to get a better approximation of the bed. Especially under heat they get some bending This works quite well, but neglects some errors:
REPETIER SERVER DEFINED LIMITS SOFTWARE
This can be done through a software rotation (if z moves have no backlash) or through a mechanical movement of the bed sides (through motorized modification of 2 from 3 fix points). The difference to than theoretically constant z show us how much rotation is required to be everywhere on same height. To do so we measure at least 3 points and compute the average plane trough this. The first thing we normally do is level out the bed. Once you know the nozzle height above bed when it triggers we can use this to measure how the bed is positioned in z direction.
That it triggers normally before the nozzle hits the bed.
That is a device switching a digital pin under some pressure like a switch and is connected to your extruder such This documentation assumes you have version 0.92.8 from or later installed! How it worksīefore you start defining your auto leveling you should know what you are doing and what you can change and where you would change what error. There have been several bugs in the auto leveling and distortion correction code.
0 kommentar(er)
