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Hiromoto revisited: new geometry

Wed Sep 04, 2013 11:10 am

Handled a brand new Hiromoto AS 190 Santoku today, and wondered about the geometry that has changed compared to what I was familiar with. It obviously got a spa treatment. The good old Hiromotos weren't so much thick behind the edge, but the thickening was quite abrupt. Now I found the left face slightly convexed instead of deadly flat, and a much larger part of the clad ground away. So, thinning the back face, which was the first thing to do, is already done.
Did any others notice the same?

Re: Hiromoto revisited: new geometry

Wed Sep 04, 2013 12:11 pm

http://postimg.org/image/b0dxse17j/

Re: Hiromoto revisited: new geometry

Wed Sep 04, 2013 1:31 pm

I haven't seen a new Hiromoto AS in ages. Makes me real curious though.

Re: Hiromoto revisited: new geometry

Wed Sep 04, 2013 9:32 pm

I have a smaller AS Santoku for my mom and got a 190mm one here to rehandle. Both are decently thin behind the edge. I wonder if the Santokus are ground thinner than the larger gyuto's or if they modified the grind.

Re: Hiromoto revisited: new geometry

Fri Sep 06, 2013 9:51 pm

All the ones I've handled have been what I call "normal" thickness.. not necessarily the thickest thing out there, but yeah, I like them much better after some thinning.

Re: Hiromoto revisited: new geometry

Sat Oct 05, 2013 6:07 pm

taz575 wrote:I have a smaller AS Santoku for my mom and got a 190mm one here to rehandle. Both are decently thin behind the edge. I wonder if the Santokus are ground thinner than the larger gyuto's or if they modified the grind.

Both. All are ground thinner than before, and the santoku is thinner than the 270 gyuto.

Re: Hiromoto revisited: new geometry

Sat Oct 05, 2013 6:13 pm

Here a photo of a brand new 270 after one day of use. It's clear much more clad has been removed at the left face in comparison with batches from a few years ago.

Image

Re: Hiromoto revisited: new geometry

Sun Oct 06, 2013 2:47 pm

Get it while you can. Word on the street is that Hiromoto's owner is retiring and shutting the shop. He's in his 80s.

We're thinking of doing a Kohetsu AS western handled knife to replace them. They should have much better heat treatment so we're pretty sure they'll be an improvement over the Hiromotos. Hopefully we'll have them available before stock runs out of the Hiromotos.

We'll also be able to do sujis and honesukis and nakiris to the line which were not available with the Hiromotos.

Re: Hiromoto revisited: new geometry

Sun Oct 06, 2013 3:19 pm

Yes!! 330mm Wa suji!!!!!!! And a 180mm Nakiri!!

Re: Hiromoto revisited: new geometry

Mon Oct 07, 2013 2:21 pm

I have to order 200 of each sku so the 330 suji is NOT going to happen. They would take 40 years to sell them all. :)
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