Originally Posted by
scott spencer
Jim - It sounds like your B0RK wasn't tight enough, and/or got moved. I've used one since August 2008, and have been really happy with it. It's a retrofit device intended for saws that weren't design with a riving knife, and I'll agree that it's not quite as elegant as a riving knife designed from the ground up, but it is safe and effective if used properly. There's always room for improvement and he's been improving the design steadily since I first heard about it. However, it seems like your intent on placing blame elsewhere.... something obviously occurred in your shop to cause the knife to move out of position and come out. If it was entirely design associated, you would have had the issue right from the start. If the blade were somehow forced into the blade it should have just shaved some of the aluminum off the knife, not launched, which hints strongly that it wasn't tightened fully.
So why not just work with him on some improvement ideas as opposed to the public lashing? How is it you never felt morally obligated to contribute anything else on these boards? There are always plenty of newbies who benefit from basic advice that I'm sure you could have helped with. To me, it doesn't seem fair to hit Bob with full blame....he's offering a riving knife solution for folks who otherwise wouldnt' have the option, and has done plenty good with AFAIC.
Jeff - The name calling is out of line....he hasn't misbehaved in anyway that I'm aware of.