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Posted by Devonshire on March 27, 2006, 8:11 pm
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Due to a lack of a pipe union and a quest pipe fitting
I didn't dare tamper with because I don't have the tool
to fix it. I found myself cutting 1" galvanized pipe with
a hacksaw this morning. While watching the saw go back
and forth I pondered the following question.
Is there an official direction that the teeth of the blade
be oriented? As in towards the handle or away from
it. If so... Why? Personally, I've never really paid attention
to which way I put them on.
Devonshire
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Posted by John Martin on March 27, 2006, 8:24 pm
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Devonshire wrote:
> Due to a lack of a pipe union and a quest pipe fitting
> I didn't dare tamper with because I don't have the tool
> to fix it. I found myself cutting 1" galvanized pipe with
> a hacksaw this morning. While watching the saw go back
> and forth I pondered the following question.
>
> Is there an official direction that the teeth of the blade
> be oriented? As in towards the handle or away from
> it. If so... Why? Personally, I've never really paid attention
> to which way I put them on.
>
> Devonshire
I would suggest with the teeth pointing down and forward. Not only
does it cut better that way (for most jobs), but to do otherwise risks
a visit from the Hacksaw Blade Police. Nasty folks.
John Martin
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Posted by Leo Lichtman on March 27, 2006, 8:42 pm
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"Devonshire" wrote: (clip) If so... Why? Personally, I've never really
paid attention to which way I put them on.
^^^^^^^^^^^^^^^^
If the teeth are pointed away from your hand, the cutting stroke pushes them
into the work, so they cut well, and you don't have top stiffen your wrist.
The only blades I know that cut on the pull stroke are the very thin
wood-cutting blades in Japanese saws. They are so thin that they would
buckle if you tried to make one cut on the push. Hacksaw blades work best
at very high tension, so buckling can't happen.
You don't pay attention to the direction? Does this mean you slide the saw
back and forth with equal energy in both directions? John M is right. The
Hacksaw Blade Police will come. However, if it's your first offense, they
will probably send you to Sawyer's Education, and let you off without a
fine.
Watch out for the Metal File Police as well.
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Posted by Gerald Miller on March 27, 2006, 11:17 pm
Please log in for more thread options On Tue, 28 Mar 2006 01:42:24 GMT, "Leo Lichtman"
>
>"Devonshire" wrote: (clip) If so... Why? Personally, I've never really
>paid attention to which way I put them on.
>^^^^^^^^^^^^^^^^
>If the teeth are pointed away from your hand, the cutting stroke pushes them
>into the work, so they cut well, and you don't have top stiffen your wrist.
>The only blades I know that cut on the pull stroke are the very thin
>wood-cutting blades in Japanese saws. They are so thin that they would
>buckle if you tried to make one cut on the push. Hacksaw blades work best
>at very high tension, so buckling can't happen.
>
>You don't pay attention to the direction? Does this mean you slide the saw
>back and forth with equal energy in both directions? John M is right. The
>Hacksaw Blade Police will come. However, if it's your first offense, they
>will probably send you to Sawyer's Education, and let you off without a
>fine.
>
>Watch out for the Metal File Police as well.
>
Fine blades such as used in a jewelers saw cut on the pull stroke
Gerry :-)}
London, Canada
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Posted by Devonshire on March 28, 2006, 11:58 am
Please log in for more thread options On the day of Mon, 27 Mar 2006 23:17:52 -0500...
typed these letters:
>Fine blades such as used in a jewelers saw cut on the pull stroke
>Gerry :-)}
>London, Canada
The cutting direction varies on electric reciprocating saws too.
In a scroll saw I would install the blade so that it cuts on the
downward stroke which helps hold the material being cut to
the table. A Jig saw cuts on the up stroke to help hold the saw to
the material being cut. With a hand saw the matrial being cut is
held independent of the saw. I think the direction of the cut is
mostly personal preference and a particual cutting direction may be
advantagous in specific situations.
Devonshire
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> I didn't dare tamper with because I don't have the tool
> to fix it. I found myself cutting 1" galvanized pipe with
> a hacksaw this morning. While watching the saw go back
> and forth I pondered the following question.
>
> Is there an official direction that the teeth of the blade
> be oriented? As in towards the handle or away from
> it. If so... Why? Personally, I've never really paid attention
> to which way I put them on.
>
> Devonshire