You would need to change configuration.h and specifically, the steps/mm for whichever axis. The specific number would depend on your lead screw, stepper driver, and stepper. Prusa has a calculator on reprap to help with that calc. After you’ve done that, you can make actual measurements, like move it 100mm and measure how far it actually moved and then adjust the steps/mm to correct it.
Im sorry my english is not perfect
it was not my question
I wanted to know what x end you have printed (stl file)
for your trapezoidal screws knowing that the original itopie uses "normal" threaded rods
Got it. I forgot that I ended up modifying the STLs (iTopie_x_end_motor and iTopie_x_end_idler) to change from threaded rod/nut to the leadscrew. One of these days, I should probably go back and update the STL now that I’m much more comfortable with Fusion360. I’ve attached my versions, but as I recall, they required some finish work so the lead screw nut would fit as well as a couple of holes for the nut mounting screws.
iTopie_x_end_stls.zip (40.8 KB)
Ah okay I thought you had taken a file on thingiverse for example
Thank you I was watching that I would post pictures if it interests someone!