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Thread: Home Made Coping Saw
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23rd December 2016, 09:30 AM #1
Home Made Coping Saw
Has anyone made a coping or Jewelers saw. I know they are dime a dozen.... but was thinking it would be really cool to make one that was a bit flasher than the usual.
Found a Youtube Video from a guy who made this one. Thought it was really neat.
HM Jewelers Saw 1.jpgLast edited by Gaza58; 23rd December 2016 at 09:33 AM. Reason: Posted before I was finished
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23rd December 2016 09:30 AM # ADSGoogle Adsense Advertisement
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23rd December 2016, 03:38 PM #2
Some of the antique ones are amazingly ornate. If you do make one I will be watching with interest.
Sent from my iPad using Tapatalk…..Live a Quiet Life & Work with your Hands
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24th December 2016, 04:33 PM #3GOLD MEMBER
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Looks like a doable project. Not on my radar as I have enough already but keen to see one come to life.
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28th December 2016, 10:48 AM #4
Yep , I'm in
Dave TTC
Turning Wood Into Art
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28th December 2016, 05:52 PM #5
Looks a lot more sturdy than the commercial variety.
Cheers,
JoeOf course truth is stranger than fiction.
Fiction has to make sense. - Mark Twain
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1st January 2017, 08:27 PM #6
The thought has crossed my mind that a coping saw is a feasible project. From the few I have it seems that the better versions have a more substantial frame which results in superior tensioning and consequently better sawing performance.
Regards
paulBushmiller;
"Power tends to corrupt. Absolute power corrupts, absolutely!"
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10th January 2017, 01:17 PM #7
Gaza58
The original post does not seem to have a link. This is the one I think:
https://www.youtube.com/watch?v=IFYoTkY6Qi8
This is another video using plywood. Not so aesthetic, but some interesting techniques:
https://www.youtube.com/watch?v=2dKpFrktoTA
Regards
PaulBushmiller;
"Power tends to corrupt. Absolute power corrupts, absolutely!"
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10th January 2017, 02:56 PM #8
Yes that's the one Paul..... I didn't put the link in the original as I wasn't sure of the protocol for adding links like that. I was thinking changing the Aluminium to brass but wasn't sure if it would end up too heavy.
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10th January 2017, 03:17 PM #9.
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Firstly I don't wish to appear negative because that is a very nicely made tool.
It looks like he's using about 3mm Al plate so to replace that with brass and retain the same weight you would need to use ~1mm thick brass which would not allow for strong tapping and threading.
Mind you I also wonder about the size/weight of the steel square rod he's using. I assume it's that size because its mild steel because he needs the blade tension but it must make it heavier than ideal. Weight is important factor for the fell of a saw particularly with such a fine blade.
If a tool steel was used for the main arm the steel could be half as thick and then harden and tempered to still be sparingly enough to provide blade tension. Then with a reduced weight arm using say 2.5 mm bras plate would not make the saw as heavy.
The other thing I would add is an end knob as they is very useful steadying the saw.
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10th January 2017, 03:17 PM #10
Brass is about three times as heavy as aluminium, but you could probably go to thinner material as the brass is stronger and also it is all reinforced by the timber infil, which depending on the wood could become a feature if there is some figure.
I don't think the extra weight would make a huge difference. It already had more mass than a conventional coping saw (or jeweler's saw) so that is more of the primary issue.
Regards
PaulBushmiller;
"Power tends to corrupt. Absolute power corrupts, absolutely!"
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11th January 2017, 10:06 AM #11
Thanks for your thoughts on this, Paul, and Bob........ Ways I thought you could reduce the weight
Firstly you could take the corners off the main arm from half way long and around the bend so that it was round. I have seen some jewelers saws like that.
Jewelers saw 1.jpg
Secondly if you used brass would be to pierce it with some sort of design allowing the wood to come through.
Here is a design I have been working on... you probably could go way fancier than this.
Jewelers Saw Build 2.jpg
I was also thinking of riveting the plates rather than using screws. I have never done anything like this before so may have all sorts of issues that I haven't foreseen.
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11th January 2017, 10:29 AM #12GOLD MEMBER
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My Aven jewellers saw weighs 175 grams. It's nicely balanced at that weight but another 50 grams wouldn't be noticed, I think.
Mine has thumbscrews (wing bolts) where the one you are targeting has Allen keys. No doubt preferred due to how often the very fine blades break.
ArronApologies for unnoticed autocomplete errors.
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11th January 2017, 10:54 AM #13.
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That will save 21% of the weight so worth doing.
The arm doesn't even need to be square - it could be round in cross section. A flat section filed along the round will enable the holding screw to register the arm in place relative to the handle
Secondly if you used brass would be to pierce it with some sort of design allowing the wood to come through.
Here is a design I have been working on... you probably could go way fancier than this.
I was also thinking of riveting the plates rather than using screws.
I wouldn't even glue the wood onto the brass but arrange it so the wood is somehow locked in or pinned or screwed in place.
The then whole tool could be taken to pieces and the brass pieces re-polished when needed
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11th January 2017, 12:04 PM #14
IMG_5774a_edited-5 copy.jpgMost common tools are able to be hand made (all the first ones were ). The jewelers saw should be easy enough to do if you want to spend the time. The hacksaw and the junior hacksaw on the left took me weeks to make each (back when I were an apprentice) They are still the saws of choice when I want to use a hacksaw. Of course as we spent so much time making them we didn't want to use them on the job, so the very next thing we did was make another junior hacksaw from a piece of 1/4 rod, bent up in a couple of minutes and chucked in the tool box!
(And over the years the poor old hacksaw copped a covering with spare paint to prevent the rust as they were only mild steel. Maybe I should strip it back and polish it for old times sake...)
Regards
SWK
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11th January 2017, 02:58 PM #15
Nice work SWK....... back in the day when apprentices actually learnt how to make things.... shame they are all pushed through now days before they have time to learn anything.
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