I have tried to use the square chisel mortising attachment on my drill press several times. I never got it to work right. Now I have a project that requires dozens of double mortise and tenon joints. So I dragged the parts out of a bottom drawer and got serious. I'm pretty sure I have it all assembled right , this time. But it's still not working.
When I turned the drill on, it sounds fine. The drill bit is not draging or rattling around inside the chisel. But when I plunged it into wood, the drill bit pulled out of the chuck. So I tried again. I noticed that the chuck , which is only a year old, took a lot of cranking to seat tighty to the bit. This time when I started a cut, the chuck broke loose from the tapered shaft. I figure that there is a miss alignment putting side pressure on the chuck.
I've checked the run out with just a bit in the chuck, and that is fine. The long mortising drill bit seems to be straight too. So all I can figure is the cast iron yoke that holds the chisel has a problem. This thing has to mount perfectly onto the quill collar . Then the chisel has to be held in perfect alignment with the chuck and the drill bit. Has anyone been able to make this miracle happen?
Can this perfect alignment be achieved? Should I give up and buy a dedicated mortiser; drill and chisel the mortises; make a mortising jig for a router??
When I turned the drill on, it sounds fine. The drill bit is not draging or rattling around inside the chisel. But when I plunged it into wood, the drill bit pulled out of the chuck. So I tried again. I noticed that the chuck , which is only a year old, took a lot of cranking to seat tighty to the bit. This time when I started a cut, the chuck broke loose from the tapered shaft. I figure that there is a miss alignment putting side pressure on the chuck.
I've checked the run out with just a bit in the chuck, and that is fine. The long mortising drill bit seems to be straight too. So all I can figure is the cast iron yoke that holds the chisel has a problem. This thing has to mount perfectly onto the quill collar . Then the chisel has to be held in perfect alignment with the chuck and the drill bit. Has anyone been able to make this miracle happen?
Can this perfect alignment be achieved? Should I give up and buy a dedicated mortiser; drill and chisel the mortises; make a mortising jig for a router??