Mystery tool 2

[tobytools]

After AndyT's thread and my new found japanese tools I thought I'd do a quick post about one of the tools I got in the lot.
I recently got a few chisels off eBay (shock) more on these later...
Amongst them was this strange looking tool!

https://www.dropbox.com/s/7l712dk7w5zak ... .55.34.jpg

One on the far left is the tool in question. It is flat on the end with what seems to be a few lines? Makers or craftmans stamp maby? It's hooped so intended to be hit with a hammer.

https://www.dropbox.com/s/vxip3jra2poje ... .55.54.jpg

I haven't a clue what it's used for.
The person I got these off said he got them in a lot himselft from a bloke in japan over 2 years ago. a bit Uninformative!

Just for fun I have it a whack into some wood my findings where...
So this rules out wood stamp.

Any help in uncovering this mystery tool would be much appreciated.
I'll be making a thread on the rest of the chisels soon.

Thanks
TT

 

[AndyT]

This is just a guess, but I've seen descriptions of cutting through mortices which mention the use of a tool to drive out chips jammed in the middle. This tool could be used for that. Does anyone know if that is a common practice in Japanese work?

 

[tobytools]

This is just a guess, but I've seen descriptions of cutting through mortices which mention the use of a tool to drive out chips jammed in the middle. This tool could be used for that. Does anyone know if that is a common practice in Japanese work?

That didn't even cross my mind,
Could very well be, hopefully someone with proof comes along.
Tho, why have pattern on end if it's to pop wood out?

TT

 

[woodbrains]

Hello,

There is a tool called a strike through chisel, which has the function mentioned. I cannot recal the Japanese name for it, I'll see if I can find our.

Though I don't think trough mortices in Japanese woodworking are common, it is regarded as ugly. I think the chisel might also be used for squaring up the bottom of the mortice, which are very thin bottomed in things like shoji.
Mike.

 

[woodbrains]

Hello,

Uchinuki nomi is the thing. For evening out the bottoms of stopped mortices, or strike through chisel.

Mike.

 

[AndyT]

It's interesting to learn that the Japanese had a manufactured tool for this.
I've found the description I was thinking of. It's in Ellis' Modern Practical Joinery (1902).

"After the mortise has been cut, the core must be punched through with a core-driver. This is a piece of hardwood about a foot long, and of such size as to pass through the mortise easily. "

 

[tobytools]

Wow you two are the best, thumbs up to you both. Thank you

All the best
TT

 

[tobytools]

My google search came up with nothing, can you give me a link please
Cheers

TT

 

[wizard]

Got two of those with my old thumper

 

[AndyT]

Toby, I've had a bit of look round, and found this page http://dougukan.jp/contents-en/index.php?id=228 which has this picture of something it calls a "Uchinuki (punching-out chisel)"

The description reads:

"Its blade has a rectangular cross-section and has various types of inscriptions. It is used to penetrate through a hole once it is bore into halfway from both sides using a different chisel. "

I guess this goes to show that Google is not 100% reliable on searching for the slight variations when Japanese names are rendered in the western alphabet. There is also a picture of the "Ura-maru-nomi (reverse round chisel)" that looks a lot like the unsharpened one from the other mystery tool thread.

 

[tobytools]

That's an amazing page Andy thank you. It's already answered most of my question about jap chisels already.
My gamble on these jap chisels has payed off.

Can you recommend any books on jap tools ect and joinery?

Thanks again.
TT

 

[AndyT]

Can you recommend any books on jap tools ect and joinery?

Thanks again.
TT

No, it's unexplored territory to me and I only have one Japanese tool, a marking knife from Axminster. Out of curiosity I did buy a copy of "The Complete Japanese Joinery" pub. Hartley and Marks a few years ago. Being an American translation, it's actually about carpentry, not joinery, covering mostly timber framing, roofing and flooring. It does have brief descriptions of some tools and directions for some characteristic joints. I expect better books are available now. Others will know a lot more than me on this one!

 

[Harbo]

Toshio Odate's book on Japanese woodworking tools is good.

Rod

 

[Racers]

+1

Pete