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genno hammer for the swap

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Project by bobasaurus posted 07-20-2018 09:18 PM 588 views 0 times favorited 18 comments Add to Favorites Watch

I made this Japanese-style genno hammer for the 2018 mallet/hammer swap and sent it out to my new hammer brother Nathan / lazyman . These are traditionally used for striking chisels and adjusting plane blades.

I forged the head from a thick steel stake I found at the local flea market (which I’ve dubbed flea market mystery steel), with old leaf spring steel forge-welded to the faces for strength. I had previously forged a special hot punch to make the eye for this hammer. The head is hardened and tempered, and I left some of the quench blackening on there for contrast. The handle is hard maple from a large old frame I salvaged. I sculpted it to match the shape of my favorite antique cross peen hammer’s handle, I think it fits pretty well in the hand.

Hopefully Nathan can use this thing, I was kind of sad to send it out. I’ll try making another for myself someday soon.

I started by tack welding on the leaf spring faces to the 1” diameter stake cutout:

The rounded-rectangular eye punch I made just for this:

Punching the eye:

The mostly-finished head after forge welding, hot punching, forging to shape, grinding, and heat treatment:

Working on the handle:

In exchange, I received this amazing mallet from Wilson woodworking :

-- Allen, Colorado (Instagram @bobasaurus_woodworking)





18 comments so far

View builtinbkyn's profile

builtinbkyn

2620 posts in 1023 days


#1 posted 07-20-2018 09:31 PM

Allen that’s a first class genno. It looks like it could have been produced in Sanjo City Japan where I think most of the handmade hand tools come from. I like how you left the quench char and then polished the business ends for contrast. Beautiful work all the way around!

-- Bill, Yo!......in Brooklyn & Steel City :)

View JayT's profile

JayT

5759 posts in 2294 days


#2 posted 07-20-2018 09:36 PM

Really lovely hammer, Allen. Did you weigh the head before attaching the handle?

-- In matters of style, swim with the current; in matters of principle, stand like a rock. Thomas Jefferson

View bobasaurus's profile

bobasaurus

3525 posts in 3267 days


#3 posted 07-20-2018 09:39 PM



Really lovely hammer, Allen. Did you weigh the head before attaching the handle?

- JayT

I did, but I can’t remember the final weight now unfortunately. Hopefully it’s about the right size to be useful.

I realize this isn’t a traditional genno handle, but I like western-style handles with wedges so I went with it.

-- Allen, Colorado (Instagram @bobasaurus_woodworking)

View KelleyCrafts's profile

KelleyCrafts

3054 posts in 822 days


#4 posted 07-20-2018 09:39 PM

That eye hole looks just as good as any of mine Allen, not sure what’s up when you talk about mine.

I like that you left the scale on it and smoothed out the ends. Gives it a more authentic look and of course, forge welding is just awesome so kudos on that too.

I can’t see how any woodworker couldn’t use a mallet this size. My little damasacus should have been this size until I found inclusions so it ended up smaller. Next time I’ll get my stock more round before I twist it…..not sure why I didn’t.

Excellent job buddy, seriously love your work Allen.

-- Dave - http://kelleycrafts.com/ - pen blanks - knife scales - turning tools

View ToddJB's profile

ToddJB

8156 posts in 2213 days


#5 posted 07-20-2018 09:45 PM

Crap that’s cool.

-- I came - I sawed - I over-built

View bobasaurus's profile

bobasaurus

3525 posts in 3267 days


#6 posted 07-20-2018 09:56 PM



That eye hole looks just as good as any of mine Allen, not sure what s up when you talk about mine.

I like that you left the scale on it and smoothed out the ends. Gives it a more authentic look and of course, forge welding is just awesome so kudos on that too.

I can t see how any woodworker couldn t use a mallet this size. My little damasacus should have been this size until I found inclusions so it ended up smaller. Next time I ll get my stock more round before I twist it…..not sure why I didn t.

Excellent job buddy, seriously love your work Allen.

- KelleyCrafts

This one ended up decent, though a little to one side and trapezoidal. I filed it some to correct the issues.

I do have the ability to use my guillotine tool for round punching, I’ll have to use it more since it works so well:

I have 3 or 4 hammer attempts thrown into my scrap pile due to crappy eyes, but I’m getting better with practice.

-- Allen, Colorado (Instagram @bobasaurus_woodworking)

View duckmilk's profile

duckmilk

3014 posts in 1407 days


#7 posted 07-20-2018 11:02 PM

I really like the forged head Allen and the way you finished it looks cool. Forging is something that I have always been interested in.

-- "Duck and Bob would be out doin some farming with funny hats on." chrisstef

View HokieKen's profile

HokieKen

5838 posts in 1221 days


#8 posted 07-20-2018 11:29 PM

Awesome as always Allen. This one’s definitely a great size and beautifully forged. I’m always evious of the handles you make!

-- Kenny, SW VA, Go Hokies!!!

View jeffswildwood's profile

jeffswildwood

3403 posts in 2060 days


#9 posted 07-21-2018 12:13 AM

Allen, your metal work is so nice! A metal hammer/mallet will last forever!

-- We all make mistakes, the trick is to fix it in a way that says "I meant to do that".

View Dave Polaschek's profile

Dave Polaschek

2396 posts in 665 days


#10 posted 07-21-2018 12:19 AM

Beautiful metalwork, and the handle looks good too, Allen. Nice work!

-- Dave - Minneapolis

View Woodknack's profile

Woodknack

12230 posts in 2463 days


#11 posted 07-21-2018 12:38 AM

Nice tapper!

-- Rick M, http://thewoodknack.blogspot.com/

View EarlS's profile

EarlS

1365 posts in 2431 days


#12 posted 07-21-2018 12:51 AM

Allen – you metal guys are in a different class on this swap. I have no idea what you are doing, how, or why but it sure turned out nice.

-- Earl "I'm a pessamist - generally that increases the chance that things will turn out better than expected"

View tyvekboy's profile

tyvekboy

1783 posts in 3096 days


#13 posted 07-21-2018 01:14 AM

Beautiful. Lotʻs of love in that tool.

-- Tyvekboy -- Marietta, GA ………….. one can never be too organized

View Lazyman's profile

Lazyman

2286 posts in 1470 days


#14 posted 07-21-2018 01:30 AM

As the happy recipient let me first say thank you Allen. You don’t know how many times I have nearly bought similar hammers.

For the rest of you, I can tell you that it looks even more amazing in person than it does in the pictures. I actually prefer smaller hammers and mallets so this was a perfect fit for me. This one is going to get a lot of use when I need to finesse a chisel. I agree that the handle on this one is more comfortable than the traditional genno style handles. The finish is silky smooth and but not slick and I keep picking it up to feel the handle and wind up carrying it around absentmindedly. My only complaint is that it is likely to cost me money as I buy (or make) a few Japanese style planes that require a hammer like this to adjust.

BTW, I just put it on a digital kitchen scale and the weight with the handle is 6.7 oz or 191 grams.

-- Nathan, TX -- Hire the lazy man. He may not do as much work but that's because he will find a better way.

View therealSteveN's profile

therealSteveN

914 posts in 657 days


#15 posted 07-21-2018 03:27 AM

Really nice work, how many guys forge up a hammer head? Pretty sure it’s why most of the woodworking hammers made by users have wooden heads.

Thanks for posting, it’s guys like you laying it out there that makes this such a great place.

-- Think safe, be safe

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