Rostock 301 Bed Levelling
Posted: Sat Jan 07, 2017 4:54 pm
My procedure for bed leveling.
1 The bed is attached to the back delta plate with 3 screws with springs. Be sure that it is perfectly level, adjusting the screws, with a caliper or some wedge.
2 Set printer height to 220 on screen printer
3 enter those scripts in repetier (printer config):
script1 G0 X0 Y0 Z5 F2000
script2 G0 X60 Y-40 Z5 F2000
script3 G0 X-60 Y-40 Z10 F2000
script4 G0 X0 Y70 Z5 F2000
4 Home printer and use scrip1, it will drive the head at the center of the bed, close to it, lower Z to 0 with repetier manual control, and measure the remaining distance (in mm)
5 Adjust printer height adding the mm you measured at step 4 (for my printer, 225)
6 Home printer, put a A4 80g sheet of paper on the bed, launch scrip 1, lower head to 0 manually (0.1 by 0.1 steps),
7 The sheet of paper must be barely blocked at 0, and move almost freely at 0,2. If not, adjust Zoffset in printer screen to get that result. Home each time you adjust Z offset.
8 Use script 2 (it will drive the head close to a column) and lower head to 0 manually (0.1 by 0.1 steps). The sheet of paper must be barely blocked at 0, and move freely at 0,2.
9 If not, adjust the screw (with small spring) on the carriage (screw it if head is far from bed at 0, unscrew if head crashed on bed before 0).
10 Home printer and go back to step 8
11 Do the same with each column, using script 3 and script 4 (steps 8 to 10). Do it at least 2 or 3 times. (column X, then Y, then Z, and again, and once again). Lets admit the sheet of paper trick is perfect, close to each column.
12 Home printer, put a A4 80g sheet of paper on the bed, launch scrip 1, lower head to 0 manually (0.1 by 0.1 steps).
13 If you are lucky, then the sheet of paper must be barely blocked at 0, and move almost freely at 0,2.
14 if head is to far from bed, then your bed is "concave"; If bed is concave, then reduce the Control/delta/delta radius value.If it is convexe, then augment it.
15 Go back to 12 till your Z=0 head is perfectly adjusted (paper trick step 13)
16 check one more time the Z=0 close to each column with scripts 2, 3 and 4 (paper trick)
Tadaaaa....
Your bed is levelled !
1 The bed is attached to the back delta plate with 3 screws with springs. Be sure that it is perfectly level, adjusting the screws, with a caliper or some wedge.
2 Set printer height to 220 on screen printer
3 enter those scripts in repetier (printer config):
script1 G0 X0 Y0 Z5 F2000
script2 G0 X60 Y-40 Z5 F2000
script3 G0 X-60 Y-40 Z10 F2000
script4 G0 X0 Y70 Z5 F2000
4 Home printer and use scrip1, it will drive the head at the center of the bed, close to it, lower Z to 0 with repetier manual control, and measure the remaining distance (in mm)
5 Adjust printer height adding the mm you measured at step 4 (for my printer, 225)
6 Home printer, put a A4 80g sheet of paper on the bed, launch scrip 1, lower head to 0 manually (0.1 by 0.1 steps),
7 The sheet of paper must be barely blocked at 0, and move almost freely at 0,2. If not, adjust Zoffset in printer screen to get that result. Home each time you adjust Z offset.
8 Use script 2 (it will drive the head close to a column) and lower head to 0 manually (0.1 by 0.1 steps). The sheet of paper must be barely blocked at 0, and move freely at 0,2.
9 If not, adjust the screw (with small spring) on the carriage (screw it if head is far from bed at 0, unscrew if head crashed on bed before 0).
10 Home printer and go back to step 8
11 Do the same with each column, using script 3 and script 4 (steps 8 to 10). Do it at least 2 or 3 times. (column X, then Y, then Z, and again, and once again). Lets admit the sheet of paper trick is perfect, close to each column.
12 Home printer, put a A4 80g sheet of paper on the bed, launch scrip 1, lower head to 0 manually (0.1 by 0.1 steps).
13 If you are lucky, then the sheet of paper must be barely blocked at 0, and move almost freely at 0,2.
14 if head is to far from bed, then your bed is "concave"; If bed is concave, then reduce the Control/delta/delta radius value.If it is convexe, then augment it.
15 Go back to 12 till your Z=0 head is perfectly adjusted (paper trick step 13)
16 check one more time the Z=0 close to each column with scripts 2, 3 and 4 (paper trick)
Tadaaaa....
Your bed is levelled !
