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RicodJour RicodJour is offline
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Default Dual Saw -- anyone use one?

On Dec 15, 10:15*am, "Ed Huntress" wrote:
"Smitty Two" wrote in message
In article ,
"Existential Angst" wrote:


Next, when you grok the difference between a "conventional cut" and a
"climb
cut", post back -- maybe then we can have an intelligent conversation.


Something you clearly don't, EA. Those terms apply to end mills when
using the side of the cutter. Applied to a circular saw blade, they're
just meaningless technobabble used to weakly obfuscate your ignorance.


Uh, I am *not* going to get into this argument, but climb cutting and
conventional cutting apply to many types of cutting tools, including saw
blades. In fact, in production woodworking, there are ripping saws that
operate in the climb mode for the express purpose of avoiding tear-out. They
require fancy hold-downs and feed mechanisms for the workpieces, so they
don't go flying out of the saw. I've seen them, and I've written about them,
and I've had discussions with the blade makers about the differences in the
two types of blades.


Interesting. I've never heard of such a thing with a saw blade, and
DAGS to see if there was such a beast as a circular saw climb cut -
the search didn't turn up a single example in the first two pages of
results. Can you post a link to a climb cutting machine or something
you wrote about it?

In the machines you're talking about, the workpiece/sawblade is moving
in the opposite direction to the normal direction of movement. With
the Dual Saw type of saws, one of the counter rotating blades is
always moving opposite the 'normal' direction of movement - and in
fact that that is the primary reason the tool can get away without
hold downs and feed mechanisms (equal and opposite canceling and all
of that), and the reason that the tool shouldn't grab and kick, it
seems to me that the tool isn't climb cutting, so much as just
cutting. The adjectives canceled out. So is there really a climb cut
in such a tool?

R