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271222 Frank Filippone <bmwred735i@g...> 2020‑06‑13 Re: How to file a BackSaw?
I never thought to use this saw as a rip saw. Maybe I did not explain the
saw is about 18 inches long. Teeth (not yet measured, but I would guess
around 14 or so) are really dull. It will be used as a crosscut saw in a
miter box.
I guess, if the saw has both xcut and rip teeth, I get to choose. Since I
will use it for xcut, it will need xcut teeth.
Never filed xcut. New skill to learn.  (Fleam?).
Thanks gang. I knew this was the place to get a response.
Thanks for the reading and tutorial references. I will review them all.
Frank

On Fri, Jun 12, 2020 at 5:28 PM Christian Gagneraud 
wrote:

> On Sat, 13 Jun 2020 at 11:09, Frank Filippone 
> wrote:
> >
> > I have a 50-60's Diston backsaw I must sharpen to use.  Is it filed rip
> > or crosscut?
> >
> > On this particular saw, it looks like....both..... depending on where I
> > look......
> >
> > It is pretty dull, and needs a full cleaning as well.... Lots of work to
> > get a really nice saw back in shape.....
> >
> > But how do I file it?
>
> Hi Frank,
>
> Use a magnifier glass if you cannot see with your bare eyes.
> Rip cut teeth should show a line, cross-cut should shaw a triangular knife.
>
> Paul Seller has a few interesting video about saw sharpening (and saw
> teeth): https://www.youtube.com/channel/UCc3EpWncNq5QL0QhwUNQb7w
>
> Blackburn tools have very good online materials, check out:
> http://www.blackburntools.com/articles/saw-tooth-geometry/index.html
>
> http://www.blackburntools.com/articles/practical-cross-cut-saw-
angles/index.html">http://www.blackburntools.com/articles/practical-cross-cut-
saw-angles/index.html
>
> On one of his videos Paul Seller claims that there is not much
> difference b/w cross-cut and rip cut for fine saw (i guess above 14
> TPI).
>
> Filling for rip cuts is easier, so unless you intend to use your saw
> with a mitre box and your saw has fine teeth, I would say that a rip
> cut filling is your best bet.
>
> Backsaws need a perfectly flat tooth line, i use a level (fro
> flatness), and i check for flatness with a feeler gauge. I usually try
> to reach b/w +- 0.2mm to +- 0.1 mm.
>
> Chris
>
> >
> > --
> > Frank Filippone BMWRed735i@g...
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-- 
Frank Filippone
BMWRed735i@g...

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