No, not mine.
This morning I was out in the shop working on a project and ripping the edges on some 2x4's. Poor man's jointing. There was a bang, something stung my chin followed by the fairly loud loud and sharp sound of something metallic hitting either the garage door or one of my rollabout tool boxes. I immediately stopped the table saw and checked my chin. Thankfully there was no blood. Next I checked all the teeth on the tablesaw blade.
Here's what I spotted.
The tip of one of the carbide saw blade teeth was missing! You can see where by looking at the picture where I marked the tooth location.
The only thing I could guess that caused this was hitting a hard knot in the 2x4. Nothing else seemed odd with the wood at all. The blade is a Freud 30-tooth glue line rip and I've always been happy with it. That said, I did just notice that the blade is marked for ripping woods up to 1" thick and a 2x4 is thicker than that, but my money is on hitting a vary hard knot that the carbide just wasn't up to.
Now for the cautionary part of this tale.
I'm embarrassed to admit that I wasn't wearing safety glasses when this happened. I don't think an eye would have shaken this off as well as my chin did. That's on me and I got lucky. But I do learn from mistakes I survive. I installed an old non carbide tipped rip blade, put on my full face shield and finished the remaining cuts. You better believe I'll wear safety glasses at all times in the shop now and the full face shield any time I'm doing anything that can generate high speed shrapnel, e.g. grinding, working on the lathe, using the table saw.
This morning I was out in the shop working on a project and ripping the edges on some 2x4's. Poor man's jointing. There was a bang, something stung my chin followed by the fairly loud loud and sharp sound of something metallic hitting either the garage door or one of my rollabout tool boxes. I immediately stopped the table saw and checked my chin. Thankfully there was no blood. Next I checked all the teeth on the tablesaw blade.
Here's what I spotted.
The tip of one of the carbide saw blade teeth was missing! You can see where by looking at the picture where I marked the tooth location.
The only thing I could guess that caused this was hitting a hard knot in the 2x4. Nothing else seemed odd with the wood at all. The blade is a Freud 30-tooth glue line rip and I've always been happy with it. That said, I did just notice that the blade is marked for ripping woods up to 1" thick and a 2x4 is thicker than that, but my money is on hitting a vary hard knot that the carbide just wasn't up to.
Now for the cautionary part of this tale.
I'm embarrassed to admit that I wasn't wearing safety glasses when this happened. I don't think an eye would have shaken this off as well as my chin did. That's on me and I got lucky. But I do learn from mistakes I survive. I installed an old non carbide tipped rip blade, put on my full face shield and finished the remaining cuts. You better believe I'll wear safety glasses at all times in the shop now and the full face shield any time I'm doing anything that can generate high speed shrapnel, e.g. grinding, working on the lathe, using the table saw.