Reply by JBrow

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Posted on 60HH 8''Jointer Powermatic Dust Collection ?????

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1368 posts in 1523 days

#1 posted 03-30-2018 01:57 AM


I have the PM PJ-882HH 8” jointer. It looks similar to the PM 60HH 8” jointer; at least where gaps and voids that frustrate good dust collection exist. When I first received mine, I too had a leaky machine. I found debris was being thrown onto the infeed table from the gaps around the fence assembly. There may have been debris originating from under the infeed table but I do not recall. Since packing the open cavities with upholsterers’ foam, almost all of the jointer generated debris is collected. I have no debris being thrown from under the infeed table.

The small and large voids around the table/cabinet, table/casting ends, and around the fence were packed with upholsterers’ foam. The foam was cut a little oversized for a good friction fit and packed into the voids. Holes cut in the foam allow the foam to slip over bolts of the fence assembly and thus hold the end pieces of foam in place. The pieces on top of the fence assembly are unattached. I used ½” thick foam to seal around the fence support assembly/fence connection and 1-1/2” thick foam elsewhere including the large gap under the infeed table.

I also packed foam between the table saw table and the cabinet. This effort seems to have helped a little with table saw dust collection.

The upholsterers’ foam can be found at an upholstery supply store such as JoAnne’s Fabrics. I found the easiest way to cut thicker upholsterers’ foam is with an electric carving knife; the ½” thick foam cuts easily with a pair of sharp scissors. As can be seen in the photo, masking tape is a poor choice for attaching one piece of foam to another. Unfortunately I do not have a better foam to foam attaching solution.

Underside of the Infeed Table…

Fence Assembly with photo taken from outfeed end of jointer….

Standard corrugated dust collection flex hoses increases static pressure and thus reduce air flow. One reference I consulted states that a standard flex hose can add an additional 50% of static pressure over that of metal pipe. Smooth walled flex hose should reduce the flex hose’s contribution to static pressure and thus increase air flow.

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