SeeMeCNC Rostock MAX v2 Assembly Manual page 170

The top cover supports have holes in each end, just like the base supports did. The holes are for
#6-32, 1/2" flat head screws that are for holding the acrylic covers in place. Make sure you install them
as shown, with the logo text facing down.
Fig. 16-14:Top cover support.
There's three locations along the flat edges of the top plate where these are installed. In my
build, the tabs were very tight. If yours are the same tolerance I strongly suggest that you get your
hands on a 12" long Irwin Squeeze Clamp. This will help you set the tabs without doing any damage
to the supports.
Rostock MAX v2 Assembly Guide
Fig. 16-15:First top cover support in place.
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