All buttons are compatible with all nuts. No glue is required to attach a button to a nut. Place the nut on a flat surface, position the knob on top and push the knob hard to lock it on.

Nuts are available with a fitted thread (file named xxx_offset_0) or with a 0.1mm offset (file named xxx_offset_10), to be chosen according to the precision of the printer. 

The adjusted versions are difficult to screw on the first time but after two or three screwing/unscrewing it becomes easier.

 If in doubt, take the version with the 0.1mm offset.

Caution: if you intend to use these nuts with printed screws, you must choose the version with the 0.1mm offset.

It is recommended to print the knobs with a layer height of 0.2mm and the nuts with a layer height of 0.07mm.

For a better durability, it is recommended to print the nuts with PC Blend filament.