Delta Calibration: Bed-Nozzle distance increases only at -y axis Hi all, I was just finetuning my Chinese delta printer. Firstly I only made a few small prints without any problems, but with bigger prints there seems to be a small problem. When the nozzle is going to the -Y axis (or below the X axis the nozzle distance to the bed suddenly increases by about .5mm. I've already played around with delta radius correction (making a bowl/dome shape) and read about the bed tilt correction etc.. but tilt will make the +y axis nozzle distance smaller. So if I draw a line at the X axis everything above that line is perfectly calibrated but everyting below the line doesnt stick to the bed because the distance is too big. is there anybody who knows how to fix this problem? Thanks in advance! https://reprap.org/forum/read.php?178,742344,742344#msg-742344 Fri, 17 Apr 2026 08:35:21 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?178,742344,752589#msg-752589 Re: Calibrations Delta Kossel https://reprap.org/forum/read.php?178,742344,752589#msg-752589
Depending on how you intend to calibrate if it's wrong it will get autocorrected, i.e. by software autocalibration or manually using escher3D least squares online calc.

Make sure you rod length is correct by measuing from joint/ball centre to centre.

One the calibration routine determines the smooth rod offset then you can change the rod length to adjust your object XY size.]]> DjDemonD Delta Machines Thu, 02 Mar 2017 07:10:07 -0500 https://reprap.org/forum/read.php?178,742344,752588#msg-752588 Calibrations Delta Kossel https://reprap.org/forum/read.php?178,742344,752588#msg-752588 Who's able to tell me exactly where I must take measurements to find the physical value of the "Delta sooth rod offset"
in order to put it into my config.h
I have found this information for a cartesian 3d printer, but noting for my 3d printer seems like the attached picture:

Is it from center hot end effector axis, and the edge of the belt, or fron center to the external face of the linear carriage
or, between the center and the surface of the sliding rail, or between center and the middle of the vertical mounting 20x20 rail?

Thank a lot for your help.

JC[attachment 91369 Kosselview.jpg]]]> JCT54 Delta Machines Thu, 02 Mar 2017 07:07:40 -0500 https://reprap.org/forum/read.php?178,742344,744429#msg-744429 Re: Delta Calibration: Bed-Nozzle distance increases only at -y axis https://reprap.org/forum/read.php?178,742344,744429#msg-744429
Quote
Morph1
My effector is indeed a bit tilt. So apparantly my diagonal rods aren't equal. Ill try to fix it tomorrow and hopefully it helps.

It might not be the rod lengths, there are other things that cause effector tilt. See [duet3d.com].]]> dc42 Delta Machines Wed, 01 Feb 2017 16:40:02 -0500 https://reprap.org/forum/read.php?178,742344,744325#msg-744325 Re: Delta Calibration: Bed-Nozzle distance increases only at -y axis https://reprap.org/forum/read.php?178,742344,744325#msg-744325 DjDemonD Delta Machines Wed, 01 Feb 2017 11:03:25 -0500 https://reprap.org/forum/read.php?178,742344,742594#msg-742594 Re: Delta Calibration: Bed-Nozzle distance increases only at -y axis https://reprap.org/forum/read.php?178,742344,742594#msg-742594
And indeed i didn"t explain it well enough, The distance becomes more the further away the nozzle is from the X axis. at -40Y it was about .5mm.

My effector is indeed a bit tilt. So apparantly my diagonal rods aren't equal. Ill try to fix it tomorrow and hopefully it helps.]]> Morph1 Delta Machines Thu, 26 Jan 2017 16:14:17 -0500 https://reprap.org/forum/read.php?178,742344,742507#msg-742507 Re: Delta Calibration: Bed-Nozzle distance increases only at -y axis https://reprap.org/forum/read.php?178,742344,742507#msg-742507 It turned out to be the effector tilt. You can by a cheap bubble-level and check for that to see if there is something happening across the X axis...]]> Teilchen Delta Machines Thu, 26 Jan 2017 12:18:42 -0500 https://reprap.org/forum/read.php?178,742344,742344#msg-742344 Delta Calibration: Bed-Nozzle distance increases only at -y axis https://reprap.org/forum/read.php?178,742344,742344#msg-742344
I was just finetuning my Chinese delta printer. Firstly I only made a few small prints without any problems, but with bigger prints there seems to be a small problem.

When the nozzle is going to the -Y axis (or below the X axis the nozzle distance to the bed suddenly increases by about .5mm. I've already played around with delta radius correction (making a bowl/dome shape) and read about the bed tilt correction etc.. but tilt will make the +y axis nozzle distance smaller.

So if I draw a line at the X axis everything above that line is perfectly calibrated but everyting below the line doesnt stick to the bed because the distance is too big.

is there anybody who knows how to fix this problem?

Thanks in advance!]]> Morph1 Delta Machines Thu, 26 Jan 2017 06:12:43 -0500