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26th February 2013, 12:06 AM #31Member
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- Mar 2012
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- Doe Run, Pennsylvania
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- 91
Craig, I will send you six sets from the next batch.
Paul, We still cling to our old systems of measurements over here. Paul got it right, they are about 4.2 mm in diameter. The heads on these ones are 11.2 mm. The 1/2" and 9/16" ones translate to 12.7 mm and 14.3 mm, respectively. If you need to match a specific diameter for the bolt and nut heads, I can do that. Matching a specific thread may or may not be possible.
Ian, Thanks for doing the math for me. Some days I think metric would be a welcome change...
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26th February 2013, 08:58 AM #32
No worries, Isaac. I was an adult when we switched to metric, so I grew up on Imperial & had to convert. Doing the conversions is simple enough with a calculator to hand , it's getting your mind to visualise in the new units that takes time. It took me years to think of a table as being 750mm high instead of 30 inches! Ask anyone my age what their height is, & they'll instantly spit it out in feet & inches. Ask them what that is in milimetres & all you'll get is a pained look as they try to do a mental calculation.
Without constant practice (not to mention advancing years) I have lost my head for those arcane fractions, too. I looked at the 'inch' value for 8 gauge, & thought it was close enough to 5/32", but of course it isn't close enough in metalwork terms (5/32 = .15625"). So is it 11/64"? Nope, that's 0.1718". It's as near as dammit to 21/128 (0.1640625).
Yep, a decimal system is so much easier on ageing neurons. I make saw bolts with either 4, 5, or 6 milimetre shafts, depending on the size saws they are intended for - to heck with fractions of inches! But here's a nice inconsistency - I turn the heads & nuts to imperial sizes (3/8, 7/16, or 1/2"). There are actually a couple of reasons for this. One is that my brass comes in imperial sizes, so it's easier to stay with it, but perhaps more pertinently, when you buy a set of "metric" Forstner bits from most suppliers down here, what you get is an imperial set re-badged to the nearest metric sizes, so it's more accurate to work in imperial if the bolt head is intended for a hole drilled by one of these bits. Someday, when the US gives up & joins the rest of the world, the Chinese will make cheap bit sets in genuine metric sizes...
Cheers,IW
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26th February 2013, 12:22 PM #33
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26th February 2013, 01:06 PM #34Member
- Join Date
- Mar 2012
- Location
- Doe Run, Pennsylvania
- Posts
- 91
We've had to put up with metric chisels labeled in imperial dimensions for years. Not as critical as your Forstner bits, but mildly irritating on occasion.
The more metal work I do, the less I use fractions. But the two biggest hurdles to converting are trying to think in metric and all the money invested in measuring equipment and tooling.
When I was in school for engineering, we did a fair amount of our work in metric, but I never saw a millimeter or Newton after graduation.
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4th March 2013, 06:59 PM #35SENIOR MEMBER
- Join Date
- Jul 2010
- Location
- Canberra
- Posts
- 421
Good timing or what!?! :)
I think my luck must be improving. I got home from work today and found the latest Australian Wood Magazine in my letterbox.
Even better, it has some info on making saws in it
Craig
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4th March 2013, 09:05 PM #36
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4th March 2013, 10:03 PM #37SENIOR MEMBER
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- Jul 2010
- Location
- Canberra
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- 421
Wood Working Mafia
Ian,
Shhhh!!!! The Wood Working Mafia is full of shady characters!
BTW, that D8 half back at the top of page 57 is an incredible looking saw! After I finish restoring a few of the saws I picked up, I hope to make a saw, and something like that really appeals.
Craig
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5th March 2013, 08:16 AM #38
Oh Dear! From fixing saws to making saws - down the slipperey-slope you go!
It is a lot of fun, though, and sharpening/making saws is the best way to get to grips with the subtilties of hand saws. In fact, making any kind of woodworking tools is bound to improve your skills & your understanding of them, imo.
Cheers,IW
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11th March 2013, 10:07 PM #39SENIOR MEMBER
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- Jul 2010
- Location
- Canberra
- Posts
- 421
Borrowed a book...
I picked up a book yesterday from the local library, "Toolmaking Projects For Joinery and Woodworking" and it has some very detailed plans for making a saw with a brass back, how to sharped said saw and plans for a simple saw vice.
Cover of the book. 51bsBy8kYmL._SY300_.jpg
I also picked up some old split nuts from the UK, which will tide me over until Isaac S. is ready to ship orders
Craig
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21st March 2013, 07:56 PM #40SENIOR MEMBER
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- Jul 2010
- Location
- Canberra
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- 421
Saw Nuts Arrived!
Well,
Isaac's saw nuts arrived in the post and they are terrific. Compared to the antique nuts I picked up on eBay, these are much better. Not just because they are new, but they are nowhere near as flimsy as the antiques.
I will keep my fingers crossed that Isaac will make these in other sizes, as these are really, really nice. Having a medallion-sized saw nut that you can engrave would be a nice touch.
Now I just need to get my sorry carcass out to Monaro timber to get some decent wood to make a new handle or two
Craig
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22nd March 2013, 06:08 PM #41Member
- Join Date
- Mar 2012
- Location
- Doe Run, Pennsylvania
- Posts
- 91
Glad you liked them, Craig. And since you asked, I have them in 7/16", 1/2", and 9/16", as well as a 3/4" medallion in two different styles.
saw-bolts-nuts.jpg saw-bolt-side.jpg medallions.jpg
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23rd March 2013, 07:26 AM #42SENIOR MEMBER
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- Jul 2010
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- Canberra
- Posts
- 421
Placing another order soon...
Isaac,
I'll be placing another order in two weeks for some of these
I might grab one of you crew drivers whil I am at it too. Very hany
Craig
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23rd March 2013, 10:38 AM #43
Sources of Split Nuts For Handsaws
...he makes hany crew drivers too! Is there nothing the man can't do?
...I'll just make the other bits smaller.
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23rd March 2013, 11:16 AM #44Member
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- Mar 2012
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- Doe Run, Pennsylvania
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- 91
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23rd March 2013, 11:24 AM #45SENIOR MEMBER
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- Jul 2010
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- Canberra
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- 421