Blade Sharpening

Blade Sharpening

 

Blade sharpening discussions among my friends and associates occur less frequently now than in the past. Why? It’s because the topic of sharpening is very similar to discussion about religion and politics and you know what is said about that. I’m just kidding of course. I have very few discussions about the topic any more. I now find myself in the awkward position of being the “expert” everyone comes to. They come with only a few questions; and they come with lots of dull knives and tools. This standing is not enviable as you might be thinking because (1) I don’t consider myself an expert, and (2) it puts me in a postion of responsibility that I take seriously. Taking into account number one and number two results in number three (3) I have to try to learn more everyday about blade sharpening – either through reading or practice. I feel obligated to teach and perform when there are many days that all I want to do is tinker, read or watch “Gunsmoke.”

Mercer Knife Sharpening

Mercer 8" Chef Knife Sharpening Service in Mobile Alabama: Super Sharp Shop - 251-583-5955

Mercer 8″ Chef Knife Sharpening Service
Mobile Alabama
Super Sharp Shop – 251-583-5955

Mercer knives are a good value and I enjoy working on them. They can be challenging at times, especially when they see heavy use and inadequate care. This was the case when a local chef brought in her Mercer 8″ chef knife for reconditioning and sharpening.

This particular knife had quite a bit of damage and I am not sure I can figure out what caused the damage but the chef did say the knife had been sharpened on some type of wall mounted sharpening device. If I had to take a guess, from the looks of the knife edge, I would say the knife was probably pushed into the sharpening mechanism too strongly and twisted as it was removed. There were large gaps of the cutting edge broken off and three bends in the edge elsewhere.

Here is a photo of the knife edge under magnification.

Knife Repair and Reconditioning in Mobile AL: Call Super Sharp Shop at 251-583-5955

Knife Repair and Reconditioning in Mobile AL: Call Super Sharp Shop at 251-583-5955

As you can see, it is pretty rough. My challenge was to not only sharpen the blade but to restore a working edge with bends in addition to the large chips. Actually, the damage was much more than chips — some of the missing cutting edges were up to an inch long!

Nothing to do here but start over with profiling the edge. I started with a 42 degree bevel for the edge foundation and worked the edge with first 220 grit and progressing to 1000 grit. The 42 degree edge was quite sharp after about an hour of re-profiling and polishing but Mercer Chef Knives are designed for a 22 degree cutting edge. So, next a 22 degree edge was built on top of the 42 degree edge. This guarantees a strong edge that should not damage as easily as having a 22 degree edge only. Starting with a few minutes on 400 grit, I progressively worked thru 600 grit and 1000 grit. Then I sat down in front of my TV and spent about 30 mintues polishing the edge with 2000 polishing tape and finally 3000 polishing tape. The knife turned out beautifully and I am going to recommend to the chef to stay away from that wall mounted sharpener, whatever it is, and use only a ceramic rod to keep the knife sharp.

Have you got a problem knife? I cannot guarantee success on every knife but I do enjoy a challenge. Call Terry at two-five-one | five-eight-three | 5955.

 

BLADE SHARPENING MAIN MENU

Published: April 15, 2016

Lawn Mower Blade Sharpening in Mobile Alabama

Lawnmower Blade Sharpening and Balancing in Mobile Alabama
Lawnmower Blade Sharpening and Balancing in Mobile Alabama

Lawnmower Blade Sharpening and Balancing in Mobile Alabama

Lawn mower blade sharpening service for Mobile Alabama. Quick turn-around. Call to check how busy I am at the time you need your lawnmower blades sharpened. If I’m not doing some type of critical work I can stop to sharpen and balance your blades while you wait about 10 to 15 minutes.

BLADE SHARPENING MAIN MENU

Published: March 28, 2016

Lawnmower Blade Sharpening in Mobile Alabama

Lawn Mower Blade Sharpening Service in Mobile Alabama Area

Lawnmower Blade Sharpened in Mobile AL

 

Your lawnmower blades make around 800 chops per minute and in most lawns the material available for cutting includes sticks, small stones and other debris you do not notice. Lawnmower blades take a terrible beating. The steel used for mower blades is relatively soft too, around 40 to low 50 Rc which means they do not hold an edge like most knives.

So, what’s the best way to sharpen lawn mower blades? For most blades, use a file to put a chisel edge on the top side of the blade. A very small touch up to the bottom is usually all that is necessary. Do not try to turn the blade into a razor–it’s a waste of time and the blade will dull somehat quickly anyway.

Another note: If you use a grinder to apply the chisel edge, be very careful of how much heat is generated in the blade. Go lightly, very lightly with a power grinder. Every time you generate heat you are softening the blade which means you will be replacing them sooner than you would like.

BLADE SHARPENING MAIN MENU

Published: March 16, 2016