teching DM21, Manual

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Assembly instructions:
1. First put the linear rail into four sets of small sleepers
and
a set of large sleepers. Must hang the hanging platforms
of all the pressure blocks on the linear rails.
2. Then tighten the screws at both ends to ensure that the
linear rails are flush with the small sleepers.
3. Evenly arrange the three small sleepers in the middle
and then tighten the screws.
Hanging platform of
pressure block
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