Difficulty
Moderate
Steps
3
Time Required
- Primary Arms 3 steps
User-Contributed Guide
This guide is not managed by the site's staff.
Introduction
The primary arms attach the cylinder/frame assembly to the secondary arms, which support it. They also attach to the Brickholder plate, the Dirt-keeper plate, the Controller Mount, and the Valve Mount.
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On one piece, mark holes on the 4" side, all 1.25" away from the edge for:
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Two total 3/4” diameter holes at 2” and 70.”
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Six total 13/16” diameter holes at 27", 37", 39 3/4", 48 1/4", 51", and 63 1/2".
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Use this piece to mark the locations on the other side. They are to be mirrored, so make sure they aren't in the same exact orientation.
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Determine which one is arm A and which is arm B by looking at the diagrams. Label them.
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On arm A, punch the following holes on the 6” side of the angle iron, measured from the left, each centered 1 3/4” from the long edge: Also, torch the hole for adjusting the rollers at 45". Its shape is shown in the diagrams.
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Five total 13/16” diameter holes at 9”, 13”, 18”, 28”, and 30" inches.
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Torch the roller adjustor hole in arm B, 45" from the right, so the holes will be at the same frame location.
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