Hi, I built your baffle into my Delta 50-850 dust collector last year and it's just terrific. Air flow doesn't degrade so I don't need to blow out the filter very often. I recently changed the collection bag and when I checked the baffle I was surprised to find the top was absolutely clean! A friend is interested in doing it too but I don't remember the site that had the build info. Would appreciate help. Thanks. ephriam