Bonjour, pour régler mon probleme de cotes non tenues, le service technique de Leapfrog ma demandé d'imprimer 3 fois un cube de 20*20*20, j'ai mesuré le cube en X, en Y et en Z, j'ai relevé les décalage de côtes, ensuite un simple calcul et des valeur à entrer dans le firmware et tout est résolu voici un copier coller du mail de leapfrog:
If you are going to measure their model to make adjustments to the steps, make sure that you don't do it from the corners. The image above shows that the corners of a model can be deceiving.
Calculate the Steps Per Millimeter
Print a .STL that is known to be accurate. The 20mm test cube (see attachment) is fairly accurate and has been used before in resolving this type of issue with clients.
Let's say for example you print it 3 times just to be sure and get: 19.20mm, 19.18mm, 19.22mm. Average these and you get 19.20mm.
(WHAT IT IS SUPPOSED TO BE ÷ WHAT IT ACTUALLY IS) × ORIGINAL STEPS PER MM = ADJUSTED STEPS PER MM
In our example so far, we have the first two parts of the formula: (20.00 ÷ 19.20)
However, we need ORIGINAL STEPS PER MM. This is printer model specific.
Original Steps Per MM Based on Printer Model
Creatr Single/Dual with Z-axis Pulley 20mm: X = 133.7, Y = 133.7, Z = 1280.00, E = 221.86
Creatr Single/Dual with Z-axis Pulley 30mm: X = 133.7, Y = 133.7, Z = 1920.00, E = 221.86
Creatr Single/Dual with Z-axis Spindle 16mm: X = 133.7, Y = 133.7, Z = 320.00, E = 221.86
Creatr Single/Dual with Z-axis Spindle 10mm: X = 133.7, Y = 133.7, Z = 1066.67, E = 221.86
Creatr Single/Dual with Z-axis Spindle 8mm: X = 133.7, Y = 133.7, Z = 1280.00, E = 221.86
Creatr Single/Dual with HS model Motherboard: X = 66.67, Y = 66.67, Z = 960.00, E = 99.30
Creatr XL: X = 133.7, Y = 133.7, Z = 1920, E = 221.86
Creatr HS series: X = 66.67, Y = 66.67, Z = 960.00, E = 99.30
Xeed 2015: X = 55.56, Y = 55.56, Z = 1280.00, E = 198.60
You can (should) double check these by having them connect to a 3D slicing software program that has a terminal screen (or for the Xeed, use the LilyPrint terminal screen; you'll need to connect a USB keyboard to the printer) and typing the g-code command M501 and press Send.
So for our example above (the Creatr HS client) having issues with his X axis we can now enter all the values in the formula:
(20.00 ÷ 19.20) × 66.67 = 69.45
Applying the Adjusted Steps Per MM
Now that the hard part is done, we just need to save the new adjusted steps per mm to the printer's firmware.
For all printer models except for the Xeed, you can do this by connecting your printer to the 3D slicing software.
Open your 3D slicing software and establish an electronic communication connection between the printer and the slicing software.
Then, open the communication terminal.
Enter the g-code command M92 X69.45 (this is just an example; enter your value from the formula above) in the communication terminal and press Send.
Next we have to save the changes to the firmware by typing the g-code command M500 and pressing Send.
Finally, check that the settings were saved by typing the g-code command M503, press Send, and watch what the terminal displays. In the several lines that are provided you should see X69.45 (or whatever value you entered with the M92 command).
Check the Change
Finally have them run a test print to see if it corrected the issue. You can repeat this process to fine tune all motors.