I took t0b1's skadis arm, and make it variable length. I also have a shell script (below) to generate a variety of lengths, with an option to show the lengths as text on the print, useful for determining which length you use the most. You don't need the shell script, you can edit the openscad file
Shell script to generate a variety of lengths, prusaprinters doesn't allow upload of shell scripts (Wonder why…) Simply save this as a sh script in the same directory as the skadis-arm.scad
lengths=(30 40 60 80 100)
printLengths=false
for len in ${lengths[@]};
do
echo $len
openscad -o "SkadisArm-$len.stl" -D length=$len -D printLength=$printLengths skadis-arm.scad
done
The author remixed this model.