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18th July 2014, 01:56 PM #1Senior Member
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Old Saw - what's up with these split sawnuts?
I picked up another saw today and it's got 3 sawnuts with no medallion (never had one). One of the split sawnuts is a kind I've seen before, but the other two don't appear to be threaded. It looks as though the one threaded sawnut was probably a replacement. How would I remove the other sawnuts? Are these an older type of sawnut, or just a cheaper version of the threaded ones? FYI, the saw has a nib and has a '5' stamped at the bottom of the saw under the handle, for 5 PPI I would guess. Way too much rust to hope to see an etch.
Thanks.
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18th July 2014 01:56 PM # ADSGoogle Adsense Advertisement
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18th July 2014, 08:36 PM #2
Are they brass or steel? What does the other side look like?
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19th July 2014, 01:24 AM #3Senior Member
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Old Saw - Splitnuts
A magnet sticks to them, so steel. Here are some better pics.
Thanks.
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19th July 2014, 01:58 AM #4SENIOR MEMBER
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They look like rivets peened over washers to me. The top one looks like a repair using an old brass saw split nut as the washer.
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19th July 2014, 02:14 AM #5Senior Member
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19th July 2014, 05:44 AM #6
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19th July 2014, 01:22 PM #7
I dont think that nut is worth the effort. Not too hard to make your own. I used this method by Norse Woodsmith.
Poor Boy Split Nuts | Norse Woodsmith
Other option is find some from another old saw.
Regards
John
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19th July 2014, 01:26 PM #8SENIOR MEMBER
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I wouldn't think so. Half the split nuts stripped by simply unscrewing them from the bolt in the few old saws I've taken apart and I was using split nut driver. You'd have to drill out the centre of the rivet to remove the peened metal and I'd guess the thread is already destroyed.
A better idea, if like me you lack the skills and machinery to make split nuts, is to buy modern replacements. I buy mine from Blackburn Tools:
Blackburn Tools - Split nut saw bolts
Paul
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19th July 2014, 06:57 PM #9
The handle on that saw looks far too modern to have split nuts, and as the others have said, they are most likely rivets. Rivets are very common on many saws made in the latter 1/2 of the 20th C., and they are always steel, in my experience, whereas the old split nuts & bolts are always brass. I agree that it's unlikely the nut used as a washer will still have useable thread in it, but I suppose it's possible.
I'll give a dissenting opinion & say that it's actually not all that difficult to make split nuts. If you have a woddlathe and a suitable chuck for your headstock, you can do a pretty good job, but it is fiddly! Even if you have a metal lathe, it's a tedious job, but a lot easier to make them accurately. You can also make the bolts from a bit of suitable threaded brass rod (3/16 Whitworth thread is easy to come by), and some 1/2" brass rod.
Just depends on how much you like to fiddle around....
Cheers,IW
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22nd July 2014, 06:14 PM #10Senior Member
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Old Saw - Splitnuts
Just for the heck of it, I tried to plow through the rust to find an etch. I got a partial and I'm wondering if anyone may have seen this before. I couldn't get much, but I'll send a couple of pictures. I'm pretty sure the arched word at the top begins with "FAR" and I think the word below and to the left is "WARRANTED", and I think the word to the right is "STEEL".
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22nd July 2014, 06:55 PM #11
Hmm, the plot thickens. Can't think of a name that begins "FAR..", but one of the saw gurus will no doubt come up with a suggestion, shortly. In any case, that's not an etch, Schuld66, that's a stamp. Now stamps disappeared long before that style of handle was made. It's starting to look like you've got an old blade married to a much more recent handle. If you take the handle off, & there are some non-matching extra holes in the saw, that would settle it...
Cheers,IW
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23rd July 2014, 12:17 AM #12Senior Member
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It has a nib. Based upon my very limited experience with hand saws, the ones with nibs tended to be older. Is this the case?
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23rd July 2014, 12:52 AM #13Senior Member
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Saw
I took the handle off, but there were no extra holes (see the first pic below). Also, the middle sawnut/washer seems to made of copper. My drill slipped and shaved off some of the washer and it appears to be copper -- it's hard to make out the color in the picture, but it's definitely the color of copper when seen in person. The top replacement was brass, and the bottom nut was steel.
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23rd July 2014, 09:02 AM #14
Yep, nibs haven't been regular features for a hundred years or thereabouts. That, plus the stamp makes it far older than I thought at first glance. I still don't get the handle - it just isn't right for any pre-WW2 saw I've seen, but I could easily be way out, I'm not a saw historian. Rivets are a late development in saw manufacturing, so they don't jibe with an ancient pedigree. The matching holes in handle & plate indicate it's not a bodgy replacement, but it could still be a user-made job to replace an original that was damaged beyond use.
We have some very keen saw buffs who have some knowledge of saws & their histories, but they haven't chipped in yet; must be busy elsewhere - p'raps they are combing through their texts, trying to match your saw!?
Cheers,IW
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23rd July 2014, 10:46 PM #15GOLD MEMBER
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- Apr 2012
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Backsaw.net lists a William Charles Farrer as a saw maker:
Checklist of British Saw Makers
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