Know When to Replace Your Safety Blade

We want to familiarize you with a few aspects of the Safety Blade - specifically, its wear pattern and how to tell when to replace a worn Safety Blade.

Though this is a diamond blade, it doesn’t have diamond-impregnated segments welded to a steel core, like other diamond blades. The Safety Blade has a vacuum-brazed cutting surface where the diamond is bonded to the outside of the steel core. The reason we key on the word “outside” is to make you aware that a vacuum-brazed cutting segment will not wear down like a typical impregnated segment. In other words, the wear pattern on a Safety Blade is different from the wear pattern on other diamond blades. Your safety depends on knowing what a Safety Blade wear pattern looks like.

You can tell when the blade needs to be replaced simply by looking at the cutting edge (the portion of the blade that actually does the cutting, see photo no. 1) and not the sides (photos no. 5 and 6). When the cutting edge starts to get smooth, the blade is wearing out and needs replacement (photos no. 3 and 4).


Here, the blade is new and unused. The diamond is sharp and pronounced. You should get excellent cutting performance from your blade when it looks like this.

Safety Blade Wear Pattern - Photo 1


Here, the blade is new and unused. The diamond is sharp and pronounced. You should get excellent cutting performance from your blade when it looks like this.


Here, the blade is worn down about 35% to 40%. As the diamond wears down, the blade will become dull. In some cases, the diamonds form a wear pattern in the opposite direction of blade rotation. This typically happens after cutting metallic products. Just flip the blade over so that the wear pattern spins into the cut. Doing so will help restore like-new performance.

Safety Blade Wear Pattern - Photo 2


Here, the blade is worn down about 35% to 40%. As the diamond wears down, the blade will become dull. In some cases, the diamonds form a wear pattern in the opposite direction of blade rotation. This typically happens after cutting metallic products. Just flip the blade over so that the wear pattern spins into the cut. Doing so will help restore like-new performance.


Here, the segment is worn, showing signs of heavy use on steel. It has possibly 25% life left. Your blade will show signs of slowing down at this point. Make sure you have a backup Safety Blade available. If not, it’s time to consider ordering a new one.

Safety Blade Wear Pattern - Photo 3


Here, the segment is worn, showing signs of heavy use on steel. It has possibly 25% life left. Your blade will show signs of slowing down at this point. Make sure you have a backup Safety Blade available. If not, it’s time to consider ordering a new one.


Here, the blade is completely worn out. Do not use a blade that looks like this. Remove it from your saw, even if there is diamond on the side of the cutting edge. Vacuum-brazing places one layer of diamond on the cutting edge. The blade must be replaced once this layer is worn down. At this point, the blade must be immediately replaced. Call (800) 654-5890 or visit our web site to order a new Safety Blade. This level of wear on the cutting edge is not covered under our Life Time Operator Error Warranty™.

Safety Blade Wear Pattern - Photo 4


Here, the blade is completely worn out. Do not use a blade that looks like this. Remove it from your saw, even if there is diamond on the side of the cutting edge. Vacuum-brazing places one layer of diamond on the cutting edge. The blade must be replaced once this layer is worn down. At this point, the blade must be immediately replaced. Call (800) 654-5890 or browse here to order a new Safety Blade. This level of wear on the cutting edge is not covered under our Life Time Operator Error Warranty™.


Notice the diamond on the side of the blade is still plentiful. Though it may still work as a grinding or beveling surface, replacement is still required. This level of wear on the cutting edge is not covered under our Life Time Operator Error Warranty™.

Safety Blade Wear Pattern - Photo 5


Notice the diamond on the side of the blade is still plentiful. Though it may still work as a grinding or beveling surface, replacement is still required. This level of wear on the cutting edge is not covered under our Life Time Operator Error Warranty™.


Here the blade has an extreme wear pattern on one side of the blade, possibly caused by extreme use after the cutting edge had worn away. This is not recommended. Replace your blade as soon as metal becomes visible on its cutting edge or sides. This level of wear on the grinding edge is not covered under our Life Time Operator Error Warranty™.

Safety Blade Wear Pattern - Photo 6


Here the blade has an extreme wear pattern on one side of the blade, possibly caused by extreme use after the cutting edge had worn away. This is not recommended. Replace your blade as soon as metal becomes visible on its cutting edge (see photo no. 4) or sides (see photo no. 5). This level of wear on the grinding edge is not covered under our Life Time Operator Error Warranty™.

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