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Step 4The Swivel
Mount the swivel to the underside of the long bracket so that the uprights of the U face away from the swivel.
Place the swivel in the center of the bottom of the long bracket and mark its mounting holes on to the long bracket.
Remove the swivel.
Using your ruler and a marker, draw a line from one corner screw hole (that you just marked) to the opposite corner screw hole passing through the center of the bracket. Now do the same for the remaining 2 corner screw holes. You should now have the 4 corners connected with a big x. This will give you your exact center point of the swivel. (Very important as this will be where the small servo attaches.) Alternately if the holes are in really weird places, trace the whole swivel base plate and then use these corners to find center.
Drill a 9/32" hole at the center point you just created.
Drill a 7/64" hole at each of the 4 corner screw holes you marked.
Place the swivel on the top of the Hammond enclosure (or on the cover plate of the electrical enclosure). Be sure it is not the same face of the swivel that you used to mark the mounting holes on the bracket. If using the Hammond enclosure, place the swivel closer to one of the short sides and centered on that side.
Mark the 4 corner mounting holes on the enclosure (or cover plate).
Remove the swivel.
Same as above. Connect the opposite holes to make the big x and find center. Alternately if the holes are in really weird places, trace the whole swivel base plate and then use these corners to find center.
Drill a ½" hole at this center point.
Drill a 7/64" hole at each of the 4 corner screw holes you marked
Place the swivel in the center of the bottom of the long bracket and mark its mounting holes on to the long bracket.
Remove the swivel.
Using your ruler and a marker, draw a line from one corner screw hole (that you just marked) to the opposite corner screw hole passing through the center of the bracket. Now do the same for the remaining 2 corner screw holes. You should now have the 4 corners connected with a big x. This will give you your exact center point of the swivel. (Very important as this will be where the small servo attaches.) Alternately if the holes are in really weird places, trace the whole swivel base plate and then use these corners to find center.
Drill a 9/32" hole at the center point you just created.
Drill a 7/64" hole at each of the 4 corner screw holes you marked.
Place the swivel on the top of the Hammond enclosure (or on the cover plate of the electrical enclosure). Be sure it is not the same face of the swivel that you used to mark the mounting holes on the bracket. If using the Hammond enclosure, place the swivel closer to one of the short sides and centered on that side.
Mark the 4 corner mounting holes on the enclosure (or cover plate).
Remove the swivel.
Same as above. Connect the opposite holes to make the big x and find center. Alternately if the holes are in really weird places, trace the whole swivel base plate and then use these corners to find center.
Drill a ½" hole at this center point.
Drill a 7/64" hole at each of the 4 corner screw holes you marked
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