To insert a M8 head into the slots it needs a little adjustment, which can be printed quickly. Look at the nice V-Block design by TLS_44, which this way is easy to install with the metric M8 bolts.
2
Shaper Workstation
M8-Mutter-Einsatz.stl
PLA filament or any other material you like (0.5m per item)
3D printer
Print it and insert the M8 bolt, slide it into the workstation slot.
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