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    Sharpening time for different steel hardness

    Why don't use diamond stone for all applications? (this is what I am currently use). Is there any limitation or disadvantage of it?
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    Sharpening time for different steel hardness

    May I assume that if other things are equal and I need to sharpen and not to re-profile, and using diamond stone it will take about the same time (may be 20% difference) to sharpen soft steel like VG10 to hard powder metallurgy steels?
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    What edge angle is good for supersteels

    I also can not comprehend why higher angle can remove the burr? At the higher angle I create a new bevel. What is the difference if I sharpen at the higher angle at the first?
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    What edge angle is good for supersteels

    Vadim, Thank you very much for thorough answers! It took you awhile to answer but it was worth waiting!!! Few follow ups: I can not remember immediately but somewhere in your charts you did not recommend VG-MAX for 12 DPS. That what the reason for my question. If I made my knife sharp and...
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    Edge Pro Apex 4 Vs Ruixin

    Thank you very much gentlemen for your advice. I got a ton of valuable information here; special thanks to @scottc3 for the links! I am on my 3 generation of sharpening apparatus. As everybody needs are different I had to consider that I am only concern about sharpening of my kitchen knives and...
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    paper sharpening wheels - when your time is important to you

    Does it have to be a grinder or any variable speed motor will do the job well? What is targeted RPM?
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    Stropping; At My Wits End!!

    Can somebody clarify the pressure thing: I suppose to use very light pressure to a very fine compound or to a bare smooth side leather strop then to cut stuff, sometimes pretty hard on a wood cutting board applying normal pressure? As I understand wood as all fiber has silica in it and should...
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    HF 18 In. Machete With Serrated Blade

    Harbor Freight sells cheap machete which they still claim to me stainless. I am thinking about buying 3 of them to convert into straight blades to a DIY cabbage shredder. The whole thing is sold for $6 so the metal should be very cheap. Does somebody knows what steel could it be and would I be...
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    Edge Pro Apex 4 Vs Ruixin

    In the battle edge-pro-apex-4-vs-ruixin the winner is Extreme TI:
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    How To Really Detect the Micro Burr? (we were wrong…)

    what is a microscope magnification sufficient to clearly see the microburr?
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    Edge Pro Apex 4 Vs Ruixin

    May I ask to provide your opinion on this machine: I think it is the simplest machine I could find on the web. If my only goal is to make 12 degree angle +/- 1/4 of a degree - will it work? I also like an idea of using bigger stones than Edge Pro standard. Did somebody try to use a stone arm...
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    Edge Pro Apex 4 Vs Ruixin

    In the past @Blues warned me about asking repetitive questions; however, we all are different, and we may seek different level of usefulness and detalization of information we are looking to find. Sometimes I feel that I have to ask very same question if I did not get an answer I I am looking...
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    heat controlled bench grinder

    To avoid an electrical discussion I would say that electrical motors the area of my professional expertise. You are correct that if you somehow make a motor designed for a high speed to operate at a low speed you are looking for multiple trouble. Nevertheless there are motors specially designed...
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    heat controlled bench grinder

    The problem with bench grinders is that they overheat the blades. What about of using the grinders at a very slow speed similar to the hand sharpening speed so the steel will stay cool?
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    Tomodachi

    It is still would be interesting to find out what steel it is? I like 24° inclusive but not every steel can sustain it.
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    Tomodachi

    It is still would be interesting to find out what steel it is? I like 24° inclusive but not every steel can sustain it.
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    Tomodachi

    I heard about the issue before. How difficult is it to do heat treatment properly? Isn't it just a matter of right temperature at the high point and the low point? Does somebody know how much difference is it steels treated at the current market are really done well? Are some company known for...
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    Dull ceramic rods

    Thank you guys! I was always cleaning with BKF but just rubbing it with the powder with small amount of water. I will try to soak it for a day. Since you thing that it may clog I may suspect that mineral oil could be part of the problem. I often used the rods after sharpening on oil stones and I...
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    Dull ceramic rods

    I thought that ceramic stones last forever. I got 4 idahone ceramic rods (2 white and 2 red). I think red was a joke but I love white. I hone a lot, use them instead of steel as well as I use them to sharpen in place of 1500 stone. After about 6 months of use I found that they are getting dull...
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    heat treatment service

    I am contemplation on making several blades out of AEB-L. NJ Steel Baron has it in stock. Is there not expensive service which can treat 4 blades 8" in length?
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