Read more on my website: http://tennojim.xyz/article/x-keys_l-trac
Here are all the details before assembling:
1) As rollers I got a set of high-quality miniature bearings with an outer diameter of 8mm, inner diameter of 4mm and a thickness of 3mm.
2) As an axel, I am using DIN912 M2 30mm bolts.
3) 6 printed adapters.
4) The bearing is clamped on the axle between the adapters with DIN439 M2 nuts. DIN934 going to work as well.
5) To tighten this sandwich and prevent it from getting loose, I am using DIN125 M2 washers and DIN127 M2 spring spacers.
The author marked this model as their own original creation.
