FIRST Global Building Guide Created by REV Robotics 2019, Licensed Under CC BY-SA
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3.7
HINGES
3.7.1
Kit Components
The REV Robotics Hinge kit is intended to be used with the REV 15mm extrusion to create compact, simple hinges. The
hinges come in left, right, and center pieces and are attached using standard M3 Hardware that is provided in the kit.
Adjusting the tightness of the M3 hardware holding the hinge together will adjust the amount of friction in the hinge.
3.8
HARDWARE
3.8.1
Nuts and Bolts
The REV Robotics 15mm Extrusion Building System is intended to be used with all M3 hardware (Figure 39). M3 hex cap
bolts, nylon-insert lock nuts
(“Nyloc”),
and plain nuts are all readily available online and at many hardware stores. Always
use high quality hardware because low quality hardware is made from softer materials which will become damaged while
tightening.
Figure 39: M3 Hardware
M3 hex cap bolts inserted into the extrusion and M3 nylon-insert nuts on the outside
is the recommended “stud up”
building orientation. The stud-
up method doesn’t require precise bolt lengths and is compatible with locking nuts. Regular
M3 Nuts will fit in the extrusion channel, but nylon-insert nuts will not. If attaching plastic brackets to the extrusion in the
“stud down” orientation,
be sure to use an appropriate length bolt with plain nuts in the channel.
3.8.2
Drop-in Bolts
Drop-in bolts have a modified head profile which allow the head to drop into the extrusion channel and then be tightened
in place (Figure 40). This is a big advantage when modifying an existing design because new brackets can be added to
any extrusion location
–
unlike standard hex cap bolts which must have access to an open end of extrusion so the heads
can be slid into the channel from the edge. These assembly techniques are discussed in more detail in the
section.
Figure 38: Hinge Configurations
