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Reply by jeffss

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Posted on SawStop Nusance Trips

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jeffss

3 posts in 3823 days


#1 posted 06-12-2009 02:33 PM

I work at the Marc Adams School of Woodworking and we have 8 SawStops in the building. In the 2 1/2 years we’ve had them the brake pad has been tripped by brads, wet glue. Also riving knife we forgot to take out when we cutting a new throat plate; in raising the blade through the plate the knife got pushed down and just touched the blade. A couple brake pads went off on their own. Supposedly there is “black box” in the brake pad that SawStop can examine. I believe that in that manual is mentions that the brake will activate as long as the blade is spinning (even after you push the stop switch.)

We’ve not had any finger incidents since we use the “3inch / 12 inch rule” for our machinery.
Keep your fingers 3 inches or more from guards, shields, pullies, and pinch points. Use pushsticks or jigs to maintain that distance when needed.
Marc created a series of articles on safety that were published by Popular Woodworking and were in issues starting about a year and a half ago.

The 12 inch rule means that if your stock in less than 12” long, you need to consider whether a piece of machinery is appropriate for the operation you want. Stock under that length needs attached to a bigger piece of wood or the use of a jig, etc that makes the small piece behave like a bigger piece of wood.
It sounds like you were either crosscutting with the mitre gauge or ripping a short length. Most of the time we dont crosscut on the table saw unless we use a crosscut sled. If you are using a mitre gauge, you need to screw a long and tall scrap board to the gauge to create a long fence that extends past blade ( this supports your stock on both sides of the cut. ALSO, screw a fat wooden block to the back of extended fence where the cut will be. This will create a blade shield on the back of the fence. What this set up will let you do is make your cut, pushing your stock past the riving knife, and with the blade safely covered by the shield you can remove your cutoffs ( or ignore then since they are safely past the blade and riving knife).
For ripping some (NOT ALL) short pieces you can use a wide push block. Some of our’s are 2 1/4” wide. By raising the blade about half a tooth above the stock and using just the riving knife ( the one without the blade shield.). What you will be doing with your push block is placing it so as to support both sides of your cut and pushing it right over the blade( your riving knife should be set just under the height of the blade; check your manual). This will cut into the push block as you push both sides of you stock past the blade AND the riving knife.
Again there are many ways to safely do things. Safety is a skill that needs regular practice, so take the time to think things through. You’ll be rewarded with better cuts to.


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