My Z-nuts holder

My Z-nuts holder

Now you can try ordinary M5 or M8 threaded rods without rebuilding your printer.
The sizes of the nuts holder correspond to the standard i3 parts.
For the M5 threaded rods I have 3x M5 nuts in the holder.
For the M8 1x

For the coupling you need 4x M3x10mm and 4 nuts