Table calibration

[Dima]

Hello, after all the recommendations for the calibration of the table, when printing is not possible to achieve a straight movement of the extruder. At the control points, the required clearance is provided, but in the intermediate positions the gap increases. Tell me it is possible to install this printer auto calibration?

[elmo40]

This sounds more like your step/mm count is off.
Type M503 and see what those numbers are for the M92 line.
Use a business card (very close to 50mm) and lay it flat. Press the X or Y in 50 increment and see how far out it gets in each step.
If it is always short then you need to increase the M92 values.
If it is over shooting then decrease.
You simple type: M92 X##.# Y##.# and so on.
This is also how you calibrate your extruder (with E##.#)

Once you get all those as close to the 50mm size as possible, save it with: M500

Now run something and see how it goes.

It is a tweaking game... these machines are not servo driven CNC, they are stepper play things. Accuracy is a crap shoot at best.

[elmo40]

Another potential area of misalignment is the homing adjustment screw for each arm.
Bring the machine X0, Y0, Z30 (whatever gauge block you use)
Then bring it close to one of the posts. See if it goes up or down from the gauge block height. Keep track.
Test all three spots as close to each post as possible.
If it is too low, tighten the adjustment screw.
Home the system and do it again... and again... and again........
With Delta machines there are a myriad of adjustments to be had!
Even the bed can be altered, which in turn alters the height when you move around.

If you want a more accurate machine, get a Cartesian machine.

[William]

Another potential area of misalignment is the homing adjustment screw for each arm.
Bring the machine X0, Y0, Z30 (whatever gauge block you use)
Then bring it close to one of the posts. See if it goes up or down from the gauge block height. Keep track.
Test all three spots as close to each post as possible.
If it is too low, tighten the adjustment screw.
Home the system and do it again... and again... and again........
With Delta machines there are a myriad of adjustments to be had!
Even the bed can be altered, which in turn alters the height when you move around.

If you want a more accurate machine, get a Cartesian machine.

I think the best way is adding the auto level sensor for the printer.
Then it will save a lot of time.