I have a 9 year old bridgewood BW1758 DP. It has a HD YAMA chuck and #2MT, all original. Has not been heavily used and worked fine until lately. I have a sanding drum set and needed to use it. I chucked in a sanding drum and while working on a 3" thick piece of pine the chuck and arbor dropped out. I placed the chuck and arbor into the quill and tightened down again and again since it keeps falling out when I use the sanding drums. It seems to drill fine. Any idea if I need a new morse taper? What makes it drop out?
Thanks, Barry