No one can offer me a scale part that fits for the old Deutz tractors .

The new gear-knob are always with a threat for example M10. The old system is just a axle with a hole, so you slide the gear-knob over the axle and secure with a splt pen.

You need to bend the pen 90 ° as short as possible to the eye of the pen. Then you put the knob on the axe and put in the bended pen. Now the eye ore bol part fill in the slot that is made for it. At the other side you cut the pen on length and bend also 90 ° so the pen go into the slot also. So then you have no sharp edges when you put your hand under the knob.

feel free to comment and enjoy

Prusa

I3 MK3S

No

No

0.1

30

Print the thing with the small part to the bed. Then after printing remove the extra piece of material (brim) that i put in the stl. so you can open the hole for the gearshift axle.

Print everything without support, mine piece was verry decent.

Print the Last 3 layers before the letter shapes in white. After the three layers change again fillament and make in back black.
Filament change on layer height is possible in the latest version of prusaslicer or with cura. You can find some tips on youtube.