1

Hi guys hope you can help. I’m very new to all this and was doing OK setting up my Kossel mini until I came to the calibration.

I zeroed the hot end to the centre of the build plate.

Changed the endstop offsets to zero the hot end to the build plate at the towers.

Checked centre again and found it just above the plate with 3.2mm still to go.

Tried changing the DELTA_SMOOTH_ROD_OFFSET both ways with no difference to any off the levels.

Not sure what to try next, so that is why I’m here…I need HELP, big time.

Any ideas!!!

1 Like
2

Hi,

You have done the basic calibration right.

If there is a difference between the towers and the middle of the plate, you have to adjsut the delta radius, you have done it also right by changing the DELTA_SMOOTH_ROD_OFFSET, the reason why its not changing due to that you have you eeprom is activated and its stores and uses the old value.

Switch it off in the Firmware during the calibration process, or init a M502 and then a m500 command after .

More info: http://reprap.org/wiki/G-code#M500:_Store_parameters_in_EEPROM

But I suggest to switch off this EEPROM stuff during calibration(look for EEPROM in your config file and comment it out: //#define EEPROM_SETTINGS)

For a comlpete calibration use this guide:

http://www.thingiverse.com/thing:745523

Br.,

Tamas

1 Like
3

Hi Tamas,

Many thanks for for your quick reply. You were right, I commented out the EEPROM setting and

i managed to get my printer calibrated. Now at the stage of printing my first test object. Could not

have done it without you advise. Thanks again!!

Scott

4

Great job!

Let me know if you have any questions or issues with the printer, I will try to do my best to answer them.

I have attached you an STL to print :smiley: it a simple cone, please print it. The aim of this print to check the surface of the cone, its must be smooth and blobs on it. Deltas can have hard time with printing round objects if a 8bit control board and LCD is used(print head stops for milliseconds due to run out of processor power)

This can be tweaked no worries, just print it and lets see the result. (expect one line of blobs where the layer change is happening )

T.