Assembly mold for a dreadnought guitar

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First I take a guitar that I like and trace an outline.

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Next band saw a template, sand to make a fair curve and lay out in 3/4 inch MDF.

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Rough cut close to the line.

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Using my biggest pattern bit, I set up on a home made router table. I made  an extension arm that holds a vacuum hose, well worth the effort. Not only safer, but cleaner. MDF (medium density fiber board) can make a real mess.

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Next glue up 3 layers for each side, making a sandwich that measures 2 1/4 inch.

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Drilling holes that will receive 3/4 inch sleeves. the sleeves are then tapped and 3/8 threaded bar is screwed in. This will make pivot point where the form is held together, making it easy open and close the form.

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The corner is notched out and the a slot is made on the under side,(using a dado blade) allowing the mechanism to sit inside.

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Using more 3/8 bar and a bunch of knobs I bought from wood workers warehouse, I make spreaders  that will hold the the head block, tail block and sides in place.

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Here the form is shown with the head stock,tail stock and sides in place.

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Left is an older form, kinda flimsy and not very accurate.

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The form can now be used vertically or horizontally.



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