The follow photo is of a cutting jig, comprised of two power miter saws bolted two 2 x 4 runners which track along a 2 x 4 rail. Full fabrication of basic truss takes about 24 man-hours for trained worker.
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The following photo shows the connecting members being drilled via the use of a drilling jig.
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The following photo shows the scrap lumber being run through a tilted table saw blade to produce the connecting wedge pieces.
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The following JPG shows the panels being nailed up using a jig panel as a pattern.
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The following photo shows the sheathing being cut with use of a pattern.