Vac box plenum side from the side showing the downward facing exhaust ports

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Vac box motor side showing insets for the motors and gaskits

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I didn't like the idea of having the long threaded rods, so I made some collars that I glued together for height and the top one has a threaded insert. There are all aligned via dowel pins.

Collars in place
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Motor in Place
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I liked how the collar design turned out, however using MDF for the collars turned out to be a bad idea. When I tightened the bolts to hold the motor down, the middle collar was pulled apart and came loose. I didn't feel like doing a complete redisign and didnt have any other type of wood available, so I just cut another set of collars and added 4 holes that I pushed a 3/8" dowel through from top to bottom. These additional dowels seem to be doing a good enough job of holding the MDF collars together, but I already have a better design in mind.

Continued on next post....