Step 21Assemble the rails
The J-rail will be mounted to peices of MDF. Just like the strips of wood are mounted to the test rig. I laid this all out on the floor. The motor will sit between the rails, so there needs to be enough room to keep the shaft of the motor from hitting the wall of the J-channel. This makes the whole assembly slighly wider then the test rig, so I have added some wooden shims.
Also - once I laid everything out I realized that one of the J-channels was nearly on inch too long. I found that this cut easily with sheers.
While everthing is still on the floor you can screw the peices together. This whole assembly can then be mounted in the doorway pretty easily.
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