I was using the 3'' saw tooth bit from the kit: Grizzly H5982 set ,used my drill press,low rpm (500 rpm) ,the piece of plywood I was cutting was well clamped but as soon as the tip of the screw touched the wood it grabbed on so hard that I had to shut the drill off to stop,so I manually loosened the bit and removed the center screw from it and continued to cut the 3" hole without the screw end.
I have been told I could just grind the threads and use it like a smaller size forstner bit but I really don't want to change the way this bit was designed, I thought about drilling a larger pilot hole first but is that how these larger forstner/saw tooth bits are used?
The center screw bit can not be any shorter than it is unless I cut the length of it, would that be a possible solution?
Here's the bit in question:
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