home sharpening

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shutton

Joined
Mar 16, 2016
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does F. Dick RS-150 Duo is suitable for home sharpening knives?
at this moment I sharp them with Shapton Glass Stones but I am having like 30 knives and to sharp them all it tooks me hours. so for my time saving I would like to buy something that makes my job easier.

does someone uses this sharpening machine?
what would be the quality of the final result comparing to last sharpening process with Shapton 30000?
 
I am not familiar with that unit, but I did look it up on the Web. I have no opinion.
One machine that I have seen a lot of press on this forum is the Ken Onion Work-Sharp system. You might wish to look at this one also.
Work Sharp WSKTS-KO Knife and Tool Sharpener
 
shutton said:
does F. Dick RS-150 Duo is suitable for home sharpening knives?
at this moment I sharp them with Shapton Glass Stones but I am having like 30 knives and to sharp them all it tooks me hours. so for my time saving I would like to buy something that makes my job easier.

does someone uses this sharpening machine?
what would be the quality of the final result comparing to last sharpening process with Shapton 30000?
Click to expand...


No powered pull through machine will ever compare to a hand sharpened edge on Shaptons.

You do realize the F. Dick RS-150 Duo is a $1000 right? You can get a 1x42 belt sander for about $300 and it will do volume work 10x better.
 
1x42 belt sander does not affect the edge of the knife or harm it in some way?
I am not so familiar with this kind of machinery. can you please provide me a link with one 1x42 belt sander (cause on G there are plenty of them) to know exactly what to look in my country. in my location people sharp their knives with this kind
produse-112872-55-2463.jpg
the results were disastrous every time my father tried to sharp. he dont know how to use it on a knife or just the knife it is not made to be sharped on this kind of machine

what about the grit of the belt sander? how fine should be?
 
shutton said:
does F. Dick RS-150 Duo is suitable for home sharpening knives?
at this moment I sharp them with Shapton Glass Stones but I am having like 30 knives and to sharp them all it tooks me hours. so for my time saving I would like to buy something that makes my job easier.

does someone uses this sharpening machine?
what would be the quality of the final result comparing to last sharpening process with Shapton 30000?
Click to expand...

Are you sharpening all your knives to 30000?
 
That's a bench grinder for heavy grinding of large metal parts, good for metal fab or working on cars but the wrong tool for something that cuts.

I use a Kalamazoo 1x42, it runs at a slower speed and is ideal for sharpening. Using good belts, proper sharpening pressure and smooth movements will keep the blade cool. Heat build-up is a concern for any powered sharpener but it's not the machines problem it's the users error that will cause burnt edges.
 
shutton said:
1x42 belt sander does not affect the edge of the knife or harm it in some way?
I am not so familiar with this kind of machinery. can you please provide me a link with one 1x42 belt sander (cause on G there are plenty of them) to know exactly what to look in my country. in my location people sharp their knives with this kind
produse-112872-55-2463.jpg
the results were disastrous every time my father tried to sharp. he dont know how to use it on a knife or just the knife it is not made to be sharped on this kind of machine

what about the grit of the belt sander? how fine should be?
Click to expand...

You have a 30000 git Shapton that you use to sharpen your knife yet you are considering a wheel grinder?

Anyway, maybe the Ken Onion edition work sharp would be something for you. Variable speed etc. You can get the lowest angle close to 15 dps. and you could finish on a stone by hand! That would save time!
 
cbwx34 said:
Are you sharpening all your knives to 30000?
Click to expand...
yes. why?
Jason B. said:
That's a bench grinder for heavy grinding of large metal parts, good for metal fab or working on cars but the wrong tool for something that cuts.

I use a Kalamazoo 1x42, it runs at a slower speed and is ideal for sharpening. Using good belts, proper sharpening pressure and smooth movements will keep the blade cool. Heat build-up is a concern for any powered sharpener but it's not the machines problem it's the users error that will cause burnt edges.
Click to expand...
I cant find Kalamazoo or Ken Onion Edition Knife in Romania. What about


DW755-500x500.jpg



isnt same thing like Kalamazoo? or Tormek T-4?
 
Last edited:
There is no reason to go to 30k, total waste of effort and the wrong edge for 99% of all cutting tools. I have the Glass stones up to 16k and I hardly ever go past 4k.

That grinder probably runs pretty fast but it might work. Powered sharpening is much different from hand sharpening though so practice on knives that you don't mind destroying.
 
Ever grit has a purpose and every tool has a grit range that it performs best in. 30k is for the extreme honing of straight razors, scissors or setting microlevels on sushi knives. These tools require a different edge because they are a speciality tool doing a specialty task that needs the finest of edges. The 30k is a luxury stone and only there because we obsess.

How you sharpen a knife depends on the steel, the style of the knife and what it will be used for. If you sharpen a Henckles with its soft German stainless to 30K it might look great and be amazingly sharp but the edge won't last and the customer will be back complaining. If these are just your knives then do as you please but in a professional setting you want to keep the number of stones used to a minimum and the edge a bit toothy. I use 2 or 3 stones for most and finish in the 2000 grit range on most general cutlery. Makes hours of sharpening minutes and keeps everyone happy. If you stick in the 800-4k range for finishing you will discover the edges you produce work better and are easier to maintain.

I really don't think you should buy any power tools that are not designed for sharpening or knife making. It's highly likely that you will ruin many blades using the wrong tools.
 
shutton said:
and now I am in a big cloud. then why this 30k exists?
Click to expand...

Jason pretty much answered it, but yeah, no reason to go to 30K. Might try a simple 2-step process... sharpen around 1000g, then just clean up the edge on around 4-6000g, (or whatever method you use to debur the edge). You can also make your 2nd step a "maintenance step" between sharpenings... for example: sharpen on 1K, clean up on 6K, then use the 6K to maintain the edge until it no longer cuts like you want... then back to the 1K and set a new edge.

If you look at a lot of sharpeners, (devices, not people) it's often just a 2-step method (even the one you referenced in your first post).

Just doing this, as opposed to going thru a series of stones to 30K (if that's what you were doing), is going to save you a huge amount of time. :thumbup:
 
What Jason said.
I have a Tormek type machine by grizzly and like it. Use it when I have a volume of knives to sharpen, seems you do. Have fun


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Some good info here. Have someone find you a kalamazoo and a big box of belts, you will be set for awhile.
I have some nice kitchen knives and never go past 6000 shapton glass. Get after a kalamazoo, I bet you can find one if you try.....


Russ
 
wdtorque said:
What Jason said.
I have a Tormek type machine by grizzly and like it. Use it when I have a volume of knives to sharpen, seems you do. Have fun


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Click to expand...

what do you mean by Tormek type machine by grizzly? I thought that Tormek is Tormek and grizzly is another thing right?
 
Same concept, the Tormek is the high dollar version.

I have the Triton, again the same concept with a 10" wheel. It works very well if not excellent, but swapping out blades can be challenging if moving from large to small, or ones with really thin blades spine to edge. It also is no speed demon, ten minutes per is a real good pace if you factor in clamping time, finishing, quality control..

I recently made a widget that grabs all knives by the handle and works with the existing clamp expressly to speed up the swap out time. Its not ready for prime time yet but is coming along nicely.

On woodworking tools it really shines, on knives it needs a little help.

A pile of 30 knives would have me reaching for my bench stones, maybe use a belt grinder with a 120 grit belt to reset the bevels.
 
Yes, my IM313 could handle that in a little over 2 hrs.. Without distractions. Still, 30 knives should last a long time. DM
 
What HH and DM said is true. I like /use the Grizzley "Tormek" without guides due to HH reasons. But I find it handy to reprofile and even sharpen "users". Dozier. (Not Bob)


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