I have to replace the dust flange on an old SCM 16" jointer. No idea where the original one went. Anyway, I couldn't find anything off the shelf so I had Nordfab design one using the measurements I provided them. This is what they sent back. I was expecting more of a downward-sloping "funnel" design rather than a flate plate with a 4" nipple (7-inch diameter) welded to it, but didn't specify that. I guess I figured they were the ducting "pro's" and would know what a good design would be.
What are your thoughts on the effectiveness of this flange as designed? Does the funnel design that I more commonly see help with the suction or CFM? I foresee a lot of buildup of debris on the inside of the flat area on this one.
They're charging about $90 for this, so I'm afraid to see what the addition of more material and labor would add.
Jointer Flange.jpg