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Greg Obach

Kanazuchi Hammer

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Hi all


here is my small picture intensive tutorial


two hammers.... large one is made of W1 3/4 inch round stock....

small is 1/2 inch O1 round stock






Now to drill


note the marks to line up.... ... hammer head is divided in 3... it is first drilled with 1/8 jobber bit.... the drilled again with 1/4 inch bit












the jobber bit is stiff and drills a very straight pilot hole...



now for the W1 hammer.......start the same with 1/8 pilot hole....... then switch to longer 1/8.... then move to the shop vise to drill with a pistol drill..... the pistol drill had a 3/8 inch bit..... with the pilot hole it should drill straight with some guidance...














to put the pein on the back of the hammer..... i'll stock reduce this... becareful and use safety glasses....... it is ground on a 10 inch wheel...










Now to cut it off...... with a hack saw








Now to see both...... they need to be dressed flat










to dress them flat... a 9 inch disc grinder does a marvelous job.... just hold on tight... :rolleyes:









I like to file the hole to be abit of an oval shape...









I realize that you can have a square socket on these......but that would involve forging and using a square drift.... which maybe out of some peoples ability... so the oval hole does very good instead ...




Fire fire fire




this is my pipe forge..... uses a 3/4 inch T-rex burner........ very handy to have




the buns are ready for the oven





let take a peek



getting close to temp....... when they hit the right heat.......a magnet will not stick to the steel.... hold it at that temperature for a rocknroll song....... then quench





Now quench in warm canola oil for the O1 hammer head








Now for the W1







with this.......I quench first in a small can of warm water till the face color is gone 3 seconds.......as W1 needs a fast quench......... then quickly into the oil







Test is for hardness........ you put in vise and see if the file bites ........in this case it skates on the hammer face like ice on glass


hard stuff...




now temper in the oven on a cookie sheet...... 400 F for 1 hour......... and temper at 425 to 450F next time..... depending on how hard you want the hammer face to be ?






Part two will be on making the handle to fit the hammer head........ take care and hope you enjoyed it







Oh...the final result should look like this one i put on a previous post...





just to give you an idea

Greg ;);)

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Guest ford hallam

Hey Greg,


I loved it ;) , you could make a living supplying those to Japan :rolleyes: . I'll probably link this tutorial from my site.


cheers, Ford ;)

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Hi Greg,


Excellent tutorial!


I'm turning this tutorial into an Adobe pdf document for The Carving Path resource section, to go along with Ford's two new tutorials. I see from the first photo the heads are 1 and 1 1/2 inches in length, can you provide dimensions of the handles?



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thanks all


Hi Tom

the large W1 hammer is 1.5 inch in length, 3/4 inch in diameter, socket was centered by dividing length into 3 sections... then drilling a 1/8 inch pilot hole and moving to a large size of 3/8 inch hole. The handle is 12 inches in length.. i'm not sure if this is the same size hammer handle that Ford has ? just an estimate


I'll be doing a small tutorial on how i made the handle.... soon as this hurricane leaves the east coast and i can get out to the forge... ughh


take care


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Apparently, from your photos, the round stock is other than just mild steel because there appears to be two "layers" in the stock. What stock are you using? Did you case harden it first?


Ralph ;)

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