Ender 3 Belt Kit assembly manual
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Proceed to insert Heated bed with support alu bars assembled, from the right side of
machine right under the tensioned BELT. (cable of heatbed will come out from the
right side to the machine and going to the electronic box)
Figure 50 Heatbed must be inserted inside belt
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Using Heatbed mounting plates (Fixed by M4x8mm M4 Slot Nuts 5units on
each side), install Heatbed assembly as shown in the next picture, right position is
determined by the 280mm dimension: