Learned something new yesterday

"Leon" <[email protected]> wrote in message
news:o1%[email protected]...
> OK, I am confused, what did you learn? Did I miss some detail?
>>
>> A few minutes sitting on the chair trying to figure out how the
>> polarity was reversed in his router helped the newbie realized he was
>> trying to cut on the back side of the bit.
>>
>
>

Well I guess the last part of the last sentence explains it all. :~)
Nevermind.

J T wrote:
>
> Don't know if I've ever heard it called a "chair" before. But like
> I always say, a few minutes there thinking things over is always a
> problem solver. More people should try thinking their, rather than just
> stinking.
>
Not that chair, the painted Windsor chair in the shop that SWMBO asked
me to sand down months ago so she could repaint it.
Maybe the multi-master will be under the tree this year...

RayV wrote:
> Guy decides to use his router to plow some grooves in plywood instead
> of putting the dado blade on the TS. He needed the groove to be a hair
> over 3/4" so he put in a 5/8 bit and set the fence for the first pass.
> Cut all of the pieces without trouble with this setup. Then he
> adjusted the fence for the second pass and nibbled a little of the end
> of the test piece and checked the fit. Just where he wanted it, now to
> make the final cut (know where this is going yet?).
>
> He starts feeding the piece through and about halfway thru the cut the
> piece flies off the router table!
> He picks up the piece and examines it, must have been that knot that
> flung it out. Good thing it was the test piece. Starts on the next
> one and halfway through the piece flies off the table. WTF!
>
> Shuts everything down. Look at the router table wondering which is
> left and right, start thinking back to the craftsman table he used to
> have...which way did that arrow point? No. I'm going the right way,
> it must be the x-grain of the plywood causing the problem. Lets try
> this again...
>
> Doesn't fly off the table this time, but almost. Newbie examines the
> bit expecting to find a bent cutter or some other explanation other
> than user error, nope. Then he looks at mangled piece expecting the
> wood to say 'sorry won't happen again', no response. Grasping wildly
> the newbie decides that the router must be spinning backwards... time
> for a break.
>
> A few minutes sitting on the chair trying to figure out how the
> polarity was reversed in his router helped the newbie realized he was
> trying to cut on the back side of the bit.

Help me understand what the 'back side of the bit' means. Was this a
straight bit, or a rabbet bit? Are you saying the workpiece was
between the bit and the fence?

Charlie M. 1958 wrote:
> Todd the wood junkie wrote:
> >
> > Help me understand what the 'back side of the bit' means. Was this a
> > straight bit, or a rabbet bit? Are you saying the workpiece was
> > between the bit and the fence?
> >
> He means feeding the workpiece in the same direction as the rotation of
> the bit, rather than into the cutting edge. In other words, on a
> standard router table setup, he was feeding left to right instead of
> right to left.

Sort of. I was feeding right to left and this was fine for the first
pass on the dado cut. The problem came when I moved the fence closer
to the bit and was cutting the dado wider. The portion being cut was
between the fence and the bit. Rather than reset the fence I decided
to make the second cut by feeding right to left.

RayV wrote:
> Charlie M. 1958 wrote:
> > Todd the wood junkie wrote:
> > >
> > > Help me understand what the 'back side of the bit' means. Was this a
> > > straight bit, or a rabbet bit? Are you saying the workpiece was
> > > between the bit and the fence?
> > >
> > He means feeding the workpiece in the same direction as the rotation of
> > the bit, rather than into the cutting edge. In other words, on a
> > standard router table setup, he was feeding left to right instead of
> > right to left.
>
> Sort of. I was feeding right to left and this was fine for the first
> pass on the dado cut. The problem came when I moved the fence closer
> to the bit and was cutting the dado wider. The portion being cut was
> between the fence and the bit. Rather than reset the fence I decided
> to make the second cut by feeding right to left.

Sounds like the same principle of a climb cut only with a reverse feed
direction (right to left), since you had the material between the fence
and the bit.

Normally on a climb cut you are going left to right with the bit
between the material and the fence (and saying hail Marys the whole
time).

Todd the wood junkie wrote:
>
> Help me understand what the 'back side of the bit' means. Was this a
> straight bit, or a rabbet bit? Are you saying the workpiece was
> between the bit and the fence?
>
He means feeding the workpiece in the same direction as the rotation of
the bit, rather than into the cutting edge. In other words, on a
standard router table setup, he was feeding left to right instead of
right to left.

RayV wrote:
> Charlie M. 1958 wrote:
>> Todd the wood junkie wrote:
>>> Help me understand what the 'back side of the bit' means. Was this a
>>> straight bit, or a rabbet bit? Are you saying the workpiece was
>>> between the bit and the fence?
>>>
>> He means feeding the workpiece in the same direction as the rotation of
>> the bit, rather than into the cutting edge. In other words, on a
>> standard router table setup, he was feeding left to right instead of
>> right to left.
>
> Sort of. I was feeding right to left and this was fine for the first
> pass on the dado cut. The problem came when I moved the fence closer
> to the bit and was cutting the dado wider. The portion being cut was
> between the fence and the bit. Rather than reset the fence I decided
> to make the second cut by feeding right to left.
>
Yeah, I see exactly what you mean. Now that I think about it, it might
be kinda fun to set up in an open area and see how far you get the
workpiece to shoot that way. <g>

Mon, Nov 6, 2006, 6:21am (EST-3) [email protected] (RayV) doth
exclaims "eureka":
<snip> A few minutes sitting on the chair trying to figure out how the
polarity was reversed in his router helped the newbie realized he was
trying to cut on the back side of the bit.

Don't know if I've ever heard it called a "chair" before. But like
I always say, a few minutes there thinking things over is always a
problem solver. More people should try thinking their, rather than just
stinking.

Amazing what running the piece the wrong way on the spin of the bit
makes.



JOAT
If you're not making a rocket, it ain't rocket science.

Every boatshop has a 'Moaning Chair'.

The other is the 'LL' . . . Latrine Library, or 'Head' for the nautically
inclined.

Regards,
Ron Magen
Backyard Boatshop

"J T" <[email protected]> wrote in message
news:[email protected]...
> Mon, Nov 6, 2006, 6:21am (EST-3) [email protected] (RayV) doth
> exclaims "eureka":
> <snip> A few minutes sitting on the chair trying to figure out how the
> polarity was reversed in his router helped the newbie realized he was
> trying to cut on the back side of the bit.
>
> Don't know if I've ever heard it called a "chair" before. But like
> I always say, a few minutes there thinking things over is always a
> problem solver. More people should try thinking their, rather than just
> stinking.
>
> Amazing what running the piece the wrong way on the spin of the bit
> makes.
>
>
>
> JOAT
> If you're not making a rocket, it ain't rocket science.
>

"Ron Magen" wrote in message
> Every boatshop has a 'Moaning Chair'.
>
> The other is the 'LL' . . . Latrine Library, or 'Head' for the nautically
> inclined.

A certain boat building company out of Pascagoula, MS used to outfit their
130' seismograph work boats with "heads", always mounted as far forward as
possible in the bow, below decks, and high enough off the deck to where even
Yao Ming's feet wouldn't touch.

Just imagine using one of these "bucking heads" when running into a rough
sea ... it helped to have rodeo'ed a bit.

--
www.e-woodshop.net
Last update: 10/29/06

"RayV" <[email protected]> wrote in message
news:[email protected]...
>
> Charlie M. 1958 wrote:
>> Todd the wood junkie wrote:
>> >
>> > Help me understand what the 'back side of the bit' means. Was this a
>> > straight bit, or a rabbet bit? Are you saying the workpiece was
>> > between the bit and the fence?
>> >
>> He means feeding the workpiece in the same direction as the rotation of
>> the bit, rather than into the cutting edge. In other words, on a
>> standard router table setup, he was feeding left to right instead of
>> right to left.
>
> Sort of. I was feeding right to left and this was fine for the first
> pass on the dado cut. The problem came when I moved the fence closer
> to the bit and was cutting the dado wider. The portion being cut was
> between the fence and the bit. Rather than reset the fence I decided
> to make the second cut by feeding right to left.

You might want to take a look at
<http://home.att.net/~waterfront-woods/Articles/Climb-Chip-Cutting.html>

OK, I am confused, what did you learn? Did I miss some detail?


"RayV" <[email protected]> wrote in message
news:[email protected]...
> Guy decides to use his router to plow some grooves in plywood instead
> of putting the dado blade on the TS. He needed the groove to be a hair
> over 3/4" so he put in a 5/8 bit and set the fence for the first pass.
> Cut all of the pieces without trouble with this setup. Then he
> adjusted the fence for the second pass and nibbled a little of the end
> of the test piece and checked the fit. Just where he wanted it, now to
> make the final cut (know where this is going yet?).
>
> He starts feeding the piece through and about halfway thru the cut the
> piece flies off the router table!
> He picks up the piece and examines it, must have been that knot that
> flung it out. Good thing it was the test piece. Starts on the next
> one and halfway through the piece flies off the table. WTF!
>
> Shuts everything down. Look at the router table wondering which is
> left and right, start thinking back to the craftsman table he used to
> have...which way did that arrow point? No. I'm going the right way,
> it must be the x-grain of the plywood causing the problem. Lets try
> this again...
>
> Doesn't fly off the table this time, but almost. Newbie examines the
> bit expecting to find a bent cutter or some other explanation other
> than user error, nope. Then he looks at mangled piece expecting the
> wood to say 'sorry won't happen again', no response. Grasping wildly
> the newbie decides that the router must be spinning backwards... time
> for a break.
>
> A few minutes sitting on the chair trying to figure out how the
> polarity was reversed in his router helped the newbie realized he was
> trying to cut on the back side of the bit.
>

In article <o1%[email protected]>, "Leon" <[email protected]> wrote:
>OK, I am confused, what did you learn? Did I miss some detail?

Yes:

>> A few minutes sitting on the chair trying to figure out how the
>> polarity was reversed in his router helped the newbie realized he was
>> trying to cut on the back side of the bit.

--
Regards,
Doug Miller (alphageek at milmac dot com)

It's time to throw all their damned tea in the harbor again.

Badly put (what's the backside of a round?) but I assume he means climb
cutting.

"Todd the wood junkie" <[email protected]> wrote in message
news:[email protected]...
>
> Help me understand what the 'back side of the bit' means. Was this a
> straight bit, or a rabbet bit? Are you saying the workpiece was
> between the bit and the fence?
>