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Thread: Sawsmithing hammers
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24th March 2016, 01:26 PM #61
That's why I immediately grabbed one. I wonder how the prices will trend over the next days and weeks.
I'm used to the exertion. My other obligations are running a little lighter recently so I have more time for tool-fun.
I've had the beginnings of carpal tunnel, never physician diagnosed but I know what I know. In the course of my main calling, pharmaceuticals, I believe we have a solution for such issues. Not something that'll be reported formally here of course but if we're lucky...
I'm looking forward to delving into the Hanchett book. It should yield a wealth of new information and implications.
Cheers,
RobInnovations are those useful things that, by dint of chance, manage to survive the stupidity and destructive tendencies inherent in human nature.
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24th March 2016, 02:17 PM #62
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24th March 2016, 10:55 PM #63Innovations are those useful things that, by dint of chance, manage to survive the stupidity and destructive tendencies inherent in human nature.
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28th March 2016, 08:29 AM #64
I knocked together four more of these today.
These all have the 1.75" diameter 4140 heads. Overall lengths range from 13" to 15" and masses from 923 to 1,014 gm. The hardness measurements range from HRC 43 to 46.
The longest handled hammer, rightmost, has an enlarged handle eye and was tempered to 43 for use in hot forging.
The shorter handled hammers are all HRC 44 to 46.
This'll be interesting to watch: RARE Old Atha Blacksmith Sawyer's Bladesmith "Dog Head" Saw Hammer VG | eBay
$170.50US with five hours and change to go.Innovations are those useful things that, by dint of chance, manage to survive the stupidity and destructive tendencies inherent in human nature.
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28th March 2016, 09:04 AM #65
Rob
Those hammers look good: If anything, less unweildy than the long doghead hammer shown in the Ebay listing. However, I have never used one so I can't speak from experience.
Regards
PaulBushmiller;
"Power tends to corrupt. Absolute power corrupts, absolutely!"
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28th March 2016, 11:52 AM #66
I also got the eyes drilled and partially fitted the handles to these as well today.
They are from right to 1.5" combination narrow/wide faced stretching hammer, 1.75" combination straightening/stretching hammer, 1.75" combination narrow/wide faced stretching hammer and four 1.5" dog's head tensioning hammers. I'll finish fitting these up, profile the heads and move on to heat treating them.Innovations are those useful things that, by dint of chance, manage to survive the stupidity and destructive tendencies inherent in human nature.
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28th March 2016, 11:59 AM #67
Thanks Paul. I designed the hammers I'm making to have the center of mass close to the point of contact with the saw plate. They're less inclined to tip than a longer head would be.
The older sawsmithing hammers in my collection are a bit unwieldy in my opinion. When I started tensioning saw blades one of my favorite hammers was a 2 lb. blacksmiths rounding hammer. One face is nearly flat while the other has a slight dome and the head is very short. The domed face works best for me and I've tried to reproduce the shape on the hammers I'm making. The two Stollmeyer hammers came with flat faces and I re-profiled them for tensioning. Some of the antique dog's head hammers I've seen for sale have very flat faces with an abrupt transition to the sides such as the one I linked above. Others I've seen had domed faces, often more domed than I prefer. I assume that the saw doctors modified their hammers too.
Cheers,
RobInnovations are those useful things that, by dint of chance, manage to survive the stupidity and destructive tendencies inherent in human nature.
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28th March 2016, 02:04 PM #68
Yowza
Innovations are those useful things that, by dint of chance, manage to survive the stupidity and destructive tendencies inherent in human nature.
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2nd April 2016, 08:30 AM #69
Been a bit busy but got back to hammersmithing today. These are 1.25" and 1.875" head blanks. The smaller run ~450-460 gm and the larger are ~1,300 gm. Finished they'll lose about 20%.
Innovations are those useful things that, by dint of chance, manage to survive the stupidity and destructive tendencies inherent in human nature.
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3rd April 2016, 01:11 PM #70
Got another half day to do some fun-work this afternoon so I proceeded with the forming of the smallest and largest hammers in my range (to date).
The first step is profiling the faces.
I think I'm going to call these hammers by number. The Number 4 hammer will be on the biggest stock, 1.875" at around 1,200 gm. all-up. The Number 3 will be the 1.75" stock at around 1000 gm. The Number 2 will be the 1.5" stock at 750 gm. and the Number 1 will be on 1.25" stock at 450 gm. or so.
Here are the first #1 and #4 hammers. The heads only are 375 gm. and 1075 gm.
I also picked up this extremely useful self-centering vise. Makes drilling the eyes much simpler.
Innovations are those useful things that, by dint of chance, manage to survive the stupidity and destructive tendencies inherent in human nature.
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3rd April 2016, 01:42 PM #71
Rob
Love the vice I've never heard of one before.
If I missed it say so but how do you go about making the eyes
More to my point what method do you use to clean up between the drill holes to creat the oval shape
Cheers Matt
Keep up the good work
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3rd April 2016, 01:54 PM #72
Yes Rob
What Matt said, and also the drilling of the high carbon steel is not the easiest of tasks even in the annealed state. Do you use any special drilling technique or special drills. I imagine you need coolant at the very least.
They come up looking extremely smart. Whatever you are doing, keep doing it.
Regards
PaulBushmiller;
"Power tends to corrupt. Absolute power corrupts, absolutely!"
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3rd April 2016, 02:57 PM #73
I drill the eyes in two steps. First as shown above with a 0.25" bit. The bits I use for this work are by Huot. M35 135o split point - nothing special that I'm aware of. The second step is with a 15/32" bit. I use WD40 as a lubricant and work slowly. I profile the eyes with an electrically powered die grinder. The burr is 3/8" diameter cylindrical with a ball end. I'll post pictures tomorrow.
I'd never seen a vise like this either. The postman told that one of the mail clerks almost put his back out shifting the box.Innovations are those useful things that, by dint of chance, manage to survive the stupidity and destructive tendencies inherent in human nature.
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3rd April 2016, 07:59 PM #74
yeah
cool viceregards
Nick
veni, vidi, tornavi
Without wood it's just ...
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4th April 2016, 07:18 AM #75GOLD MEMBER
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There is a 1920 version of A Treatise on the Care of Saws and Knives
available online here:
The B. T. & B. Manual, A Treatise on the Care of Saws and Knives, 1920
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