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 Post subject: kohetsu HAP40 help
PostPosted: Wed Jun 18, 2014 1:21 pm 

Joined: Wed Jun 18, 2014 1:16 pm
Posts: 3
Hey guys, I just purchased a Kohetsu HAP40 and I love it. It's time to sharpen. Mark had recommended Shapton glass stones. I purchased the 1k and 4k grits. Do you guys recommend different grits?


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 Post subject: Re: kohetsu HAP40 help
PostPosted: Wed Jun 18, 2014 1:56 pm 
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Joined: Tue Feb 05, 2013 6:00 pm
Posts: 2334
Those should work just fine - have at it :-). Refresh the edge on the 1K and refine it on the 4K. Spend enough time on the 1K to get it really sharp. HAP40 is pretty wear resistant, but Shapton GS stones cut even that steel pretty well.

If you're new to sharpening, I'd practice on a few other knives first. For the Kohetsu, paint the entire edge bevel on both sides w/Sharpie, then grind just a little on the 4K first to get a feel for what angle to hold so as to remove the sharpie from the edge bevel, all the way to the edge of the edge. Do this on back 1/3 of the blade, where it's flatter, not the tip area. Do this for both sides, again to get a sense of what angle you need to use to closely match the factory edge bevels. Once you have this feel, then switch to the 1K and follow standard sharpening procedures to sharpen, deburr, and then move to the 4K to refine the edge. Mark has some good videos if you're a newbie to sharpening: knife-sharpening-instructional-videos-for-newbies-t1930.html


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 Post subject: Re: kohetsu HAP40 help
PostPosted: Wed Jun 18, 2014 1:57 pm 

Joined: Tue May 01, 2012 9:37 pm
Posts: 348
Location: Pensacola, FL, USA
Unless you need to work out a chip, those two stones should be all you need. You may want to consider a 500 glass stone for that purpose.


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 Post subject: Re: kohetsu HAP40 help
PostPosted: Wed Jun 18, 2014 2:17 pm 

Joined: Wed Jun 18, 2014 1:16 pm
Posts: 3
Great tips thanks guys


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 Post subject: Re: kohetsu HAP40 help
PostPosted: Wed Jun 18, 2014 5:44 pm 

Joined: Fri Mar 15, 2013 9:48 pm
Posts: 77
I've got the Koehtsu HAP40 - Shapton glass works well for me. I go 1K-2K-4K, then strop on .25 micon CBN on horse butt. Cleaves paper, hair and tomatoes with equal ease ...
Tom


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 Post subject: Re: kohetsu HAP40 help
PostPosted: Wed Jun 18, 2014 7:15 pm 
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Joined: Thu Nov 22, 2012 4:17 am
Posts: 4065
I have to agree with Rick again, definitely consider a stone in the 300-500 range later for when you need to reset the bevel and for repairs.
What you have right now should work just fine for sharpening a knife with a decent edge.



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