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23rd February 2020, 08:08 PM #1
The big saw tooth cutting idea thingy!
The big idea saw tooth cutting idea thingy.
Well possibly not so big,and also possible been around long before I picked an ,interest in hand saws.
Does anybody know of anything resembling the pic supplied.?
37 seconds drawing time.
I know Blackburn tools,does vertical line spacing templates for saw teeth, I’ve down loaded and used them in the past.
Paul Sellers is famous for suggesting to follow the teeth of a hacksaws, using every second tooth. Ie 18 TPI becomes 9 TPI.
Or ,just laying another saw plate next to the saw plate needing toothing and following it being careful not to re tooth two saws at once.
I have made this suggestion to a certain fellow here who dismissed my idea with the vile venom tact of a 17th century school master.
Were I was told ,I would not pass using a broom in broom factory[emoji3064].
So ,I quickly dismissed him,and have thought I would put the idea here possibly,to even more vile dribble than a political party on free turps.
If someone compendium enough using a computer drawing program ie Skeetch up. CAD, or something.
Was able to draw up saw teeth spacing to scale with the right rake angle and spacing.
It would just be a matter of cutting a strip of paper with your chosen TPI Gluing it to the saw plate (contact adhesive) an filing to the line,
Re toothing with numbers.
My reasoning that not everyone has 100 vintage saws to choose from.
If we did, they may not actually have perfect teeth to use as a pattern.
Having a printed pattern to follow which is know to be gegometical correct would be a bonus.
You could just print as many as needed ,cut them off your sheet ,and stick them in line.
Note Point :I will not be applying for a patent on this !!
I rest my case ,and can be found trying to work out how to use the broom.
Cheers Matt.
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23rd February 2020 08:08 PM # ADSGoogle Adsense Advertisement
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23rd February 2020, 11:42 PM #2
I agree that you will get nowhere with a broom.
Brooms are soft and blunt - what you need is a good set of saw filesCheers, Bob the labrat
Measure once and.... the phone rings!
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24th February 2020, 09:15 AM #3
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Bit of thin sheetmetal cut out on cnc? Clamp on, cut teeth, move forward, cut teeth and add infinitum?
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24th February 2020, 12:24 PM #4
Matt,
Far be it for me to quash your idea, however..., I would require serious visual aids to file to a side profile. Perhaps something like this would be in order. But then my wife and kids would laugh at me, and my ego doesn't respond to ridicule that well.
YK25025_IMG_hand2_1000.jpg
I wouldn't consider myself a natural or with sufficient experience to call myself an accomplished sharpener, and yet despite the first three saws I sharpened requiring new teeth from scratch, they came out pretty well. Whilst I appreciate you trying to find an easier way for new sharpeners, I would be interested to hear how many people who attempted sharpening made a mess of it. I would hazard a guess that the hardest part for most people is getting over the fear of messing up and just trying it. As long as a new sharpener follows a competent tutor like Paul Sellers or Bob Rozaieski it is already filing by numbers.
More and more I think some over complicate matters to the point that people think these things are too hard. In days gone by, nearly every woodworker (as I understand it) was able sharpen a saw with a file, free hand hone blades and cut a straight line at will. With all the jigs, aids and workarounds now available and espoused on every corner of the internet, no wonder people think those skills are highly specialised and out of reach of mere mortals. Like any skill they take a little bit of time to master, but really, they're basic skills which don't require that much effort to achievable usable results.
I qualify all of the above by acknowledging that my comments are based on my own learning experiences and perceptions. While there is a chance that I was endowed with super skills at birth, I think a far more likely explanation is that these things just aren't that hard if you're prepared to attempt it.
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24th February 2020, 12:42 PM #5
O its a hard,lonely life being a maverick.
Cheers Matt.
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24th February 2020, 01:20 PM #6
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Here's what I used back in 2007? to cut new teeth directly onto a tenon saw blank without any marking out.
What is it?
It was easily able to generate the following TPI
24.0, 21.6, 19.6, 18.0, 16.6, 15.4, 14.4, 13.5, 12.7, 12.0, 11.4, 10.8, 10.3, 9.8, 9.4, 9.0 etc
With this gismo it would even be possible to easily generate variable pitch teeth - have to keep your counting wits about you though.
Like most of the jigs I make I've never used it since
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24th February 2020, 02:23 PM #7
Don't be too hard on yourself Matt, there are plenty of other mavericks about who will no doubt share your enthusiasm... if you reciprocate theirs. I'm sure this lady could do with a fellow maverick's encouragement.
a20xyx5114586400619.jpeg
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24th February 2020, 09:11 PM #8
Matt
This is another template.
Saw Filing Templates | Norse Woodsmith
Fold the template over the plate and file through the paper.
Regards
PaulBushmiller;
"Power tends to corrupt. Absolute power corrupts, absolutely!"
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25th February 2020, 09:21 AM #9
your first drawing looks like my wifes snoring pattern
I would love to grow my own food, but I can not find bacon seeds
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26th August 2020, 08:09 PM #10
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I saw an interesting idea recently to use threaded rod as a file guide to set the spacing:
So:
M6 = 20TPI
M8 = 18TPI
M10 = 16TPI
M12 = 13TPI
M14 = 12TPI
M16 = 11TPI
M20 = 10TPI
M22 = 9TPI
Not sure how long the rod would last - but threaded rod is cheap.
Of course you could always try a retoother!
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26th August 2020, 08:50 PM #11
I have used these templates. They make a good starting point.
I refined the use of these by using a cut-off wheel in a Dremel to cut through the template to give a little notch for the saw file to start on. I was having trouble getting a saw file to start consistently where I wanted it to. The starting notch helped cutting new teeth consistently.
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26th August 2020, 08:54 PM #12
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My setup uses a hard teflon (PTFE) guide.
STS5file.jpg
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26th August 2020, 09:37 PM #13
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26th August 2020, 09:48 PM #14
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26th August 2020, 09:51 PM #15
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Hi Paul,
Just lay the rod in the top of your vice next to the tooth line and slide your saw file in each thread as you move down the saw and make a notch to mark each tooth.
Hope you are keeping well in these interesting times.
Yes Matt, got it in one!
G
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