I've got a 70's era radial arm saw with a dust collection port that doesn't match current vacuum fittings.? I bored one end of a 1 1/4" PVC coupling to fit the saw outlet and the other end to fit the vacuum hose.? It works, but for long term a 90-degree fitting would be much better.
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I have a 1 1/4" PVC 90 that I would like to bore out to do the job.? However, having trouble figuring out how to mount on my 3" 4-jaw chuck (see photo).? I need to mount so the opening(s) is centered on the spindle so the 4-jaw adjustment capability would be great if I could get it mounted.