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Broken/cracked/damaged japanese chisels

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Blog entry by Napoleon posted 1051 days ago 1966 reads 0 times favorited 11 comments Add to Favorites Watch

Some month ago i bought some japanese chisels (Chu-Gata Nomi, Bench Chisels)

I Was very happy with them even the handels are yellow and not so nice(dont like yellow)

The blade is two layer stell and its the most sharp chisels i ever had tryed.

But then suddenly i saw that all of them hat a crack more or less. It was betwen the blade and the handel.

That made me very sad since i had paid a lot of money for them and wanted them for a long time.

So i wrote a mail to DICK-mehr-als-werkzeug were i have bought them to here were to send them and if they would give a refound or new chisels,but i was not sure what they would do.

Today they wrote back that its normal for japanese chisels and its not crack :D

The explanation is here :

Tang chisels:
Classic design, ensuring firm anchoring of the blade in the handle. On cheap tools without an additional steel ferrule, the handles may split under heavy blows.

Socket chisels:
This design allows a continuous transition from the neck to the handle and thus comfortable ergonomics. Through the conical fit of the socket, strong forces can be transmitted during striking.

Japanese chisels (Nomi):
This design combines the benefits of both types above.
Japanese chisel design Hollow back after repeated sparpening and finishing Hollow
back Tapered
blade Neck Tang JAPANESE CHISELS
Wherever high precision is required for working solid wood, for jointwork in the manufacture of fine furniture, or for the making of musical instruments, Nomi are indispensable. They have the following advantages:

A B C Tang Steel ferrule Hoop Socket Tang Steel ferrule Hoop

Blades of two-layered steel
Soft iron, protects the blade against cracking and absorbs the shocks of the hammer blows, forge-welded with a thin layer of extremely hard carbon-steel (with the exception of HSS Nomi). The hardness values are 62-63 and 66 (HSS steel) on the Rockwell scale.

Tapered blades
The blade is set at a slight angle to the tang to increase the working depth to nearly double the blade length.

Integral design
The neck is seamlessly integrated in the handle and therefore lies comfortably in the hand. The solid conical steel ferrule protects the handle against fracture or becoming loose when struck with the iron-headed hammer.

Hollow-ground back
The hollow relief (ura) on the back of the blade reduces the contact surface and therefore also the friction and the required cutting force. It also simplifies sharpening, as only the edges of the hard carbon-steel back of the blade need to be lapped. Due to the abrasion during sharpening, the straight cutting edge remains intact, even though the blade becomes shorter through sharpening over time (see illustration below).

Sharpening Japanese chisels
Use only fine-grained Japanese waterstones with grit 1000-2000 for sharpening and 1000-4000 for finishing. Work on the bevel and rear side until the concave relief is outside the cutting edge (see illustration below). The back lies completely flat on the stone. Make sure that the sharpening and finishing stone is 100% flat!

WESTERN CHISELS
As a rule, these are made of alloyed steels with relatively sturdy blades and little danger of chipping. In particular the finely manufactured Pfeil chisels in traditional central European design have proven ideal for universal use.

CHINESE CHISELS
Traditional Chinese chisels are convincing in terms of their durable, crack-resistant HSS steel blades, which also withstand rough treatment during restoration or joiner’s work. The working of wear-inducing composite materials is also no problem for these chisels. The tapered shape of the blades is advantageous for working into corners and undercutting. The value for money of these chisels is unbeatable.

So now i am happy again and i just wanted to share if anyone else end up with the same problem :)

Ps Found out there is life warranty on these chisels :) Looking forward to compare them with LN bevel chisels wich ill recive this week :D WUHUU i love tools :D:D:D

-- Boatbuilder&blacksmith



11 comments so far

View SCOTSMAN's profile

SCOTSMAN

4984 posts in 2083 days


#1 posted 1051 days ago

Rubbish a crack is not welcome in chisels. I never heard such nonsense in my life .Good japanes chisels are not designed that way I feel quite confident. He’s pulling the wool over your eyes.I am not an expert but I just don’t believe this at all , sorry. Someone else may have a very different view but a tool with a crack is a poor quality tool imho. Maybe others will let you have their opinions. Alistair

-- excuse my typing as I have a form of parkinsons disease

View Dennisgrosen's profile

Dennisgrosen

10850 posts in 1613 days


#2 posted 1051 days ago

let´s see a picture of the crack Thomas it is a hole lot easyer to understand this and Evt. help you with this
the description of the two layer soft and hard steal is maybee correct in a way
but I have always learned that Japanese cheisels is made the same way as there swords
a multible lamination done by the way they fabricate the sword
maybee I´m wrong on this but sending you a copy from there shopsite isn´t
the correct way of handle costummers they have to take those cheissels back and give you the money
with out any question do to all the money you have spendt there

Dennis

View patron's profile (online now)

patron

12831 posts in 1839 days


#3 posted 1051 days ago

i’ve never heard of this

but i never heard gabriel
blow his horn either

so long as you are happy

well then

you are happy

-- david - only thru kindness can this world be whole . If we don't succeed we run the risk of failure. Dan Quayle

View Tim Dahn's profile

Tim Dahn

1437 posts in 2063 days


#4 posted 1051 days ago

Does this help?

Maybe you are noticing the spot where the ferrule and tang meet.

-- Good judgement comes from experience and experience comes from poor judgement.

View Napoleon's profile

Napoleon

786 posts in 1307 days


#5 posted 1050 days ago

Timbo you hit the nail. It’s exactly what is happend:)
Scotsman,David and Dennis belive me if I had any doubt the chisels were going back:)

It was my mistake.

-- Boatbuilder&blacksmith

View Woodfix's profile

Woodfix

320 posts in 1797 days


#6 posted 1050 days ago

Phwuu. There is nothing more heart wrenching for a WWr than a dud tool. It must of been a massive relief to find out it is not a problem.

Well done.

I would still like to see a photo though.

Doug

-- Living is a constant gamble, life is about working the odds in your favour

View Tim Dahn's profile

Tim Dahn

1437 posts in 2063 days


#7 posted 1050 days ago

Napoleon I thought so, only because I experienced the same thing. ;)

-- Good judgement comes from experience and experience comes from poor judgement.

View Dennisgrosen's profile

Dennisgrosen

10850 posts in 1613 days


#8 posted 1050 days ago

I still think it sucks to send a paste and copy answer like that from there netstore
its the explanation that can be readed before you buy anything
thought they where better than that
not that I wuold have spend much money in the store anyway since most of the items can be found
cheaper in other place´s
but it has convinced me not to do it at all … thank´s Thomas :-)

take care
Dennis

View Div's profile

Div

1653 posts in 1438 days


#9 posted 1050 days ago

Not a crack then! What a relief! Glad for you!

-- Div @ the bottom end of Africa. "A woodworker's sharpest tool should be his mind."

View Napoleon's profile

Napoleon

786 posts in 1307 days


#10 posted 1050 days ago

Woodfix i soon find a picture

Timbo yep you know the felling :)

Dennis i disagree on that. I was my mistake and trusth me if i wasnt sure ill send them back and by the way is there a life warranty on these chisels. I have dealed a lot with Dick and there are never any trouble with them. Your choise if you dont wont to deal with them, but they still got a lot of stuff i can use to a fair price.
Come to my house Dennis and try them,get a beer and if the weather is fine we make a barbecue :D

Div of yes a big relief since i never have tryed any scharper chisels so i am happy that i can keep them :)

-- Boatbuilder&blacksmith

View Dennisgrosen's profile

Dennisgrosen

10850 posts in 1613 days


#11 posted 1050 days ago

I´m in to the BBQ :—))
next weekend I have to go to a little party My mother has invited us to come and celebrate
hers 70 year b-day with ordre to help taken care of the over flowe of wine , beer and
a hole pig that has slowly turned on a stick around 10 hours …. yamy .. yamy .. yyaaaamyyyy
gonna be funny to destroy a hole set of clothe with fat all over by eating that pig …... LOL
If I hadn´t started to droool already on the otherblog with handpplanes of your dreams
I deffently do it now just by the thoughts of pig turned over the fire …. ssssslupre :-)
did you get the picture of next weekend ….LOL

take care
Dennis

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