SM

"Stephen M"

04/11/2004 11:02 AM

Jointer technique tip/observation

I was recently edge jointing some stoc about 5-6' long for glue-up. (I find
that this is approaching the capacity of my jointer with a combined bed
length of 42". I wasn't paying close enough attenting to my technique and I
ended up with a few convex edges. I knew that it was technique and not setup
because some of the edges were perfect.

I found that it took several passes on the jointer, carefully watching
technique to "fix" the convex edge.

I found it easier (fewer passes) to recover from a concave edge than a
convex one.

So, to "fix" a convex edge, I made one pass on the jointer, dropping the
stock onto the cutters 6 inches into the cut and lifting it off 6 inches
before the end, creating a sort-of concavity. One more regular pass and
everything was just right.

Is this an old trick that I just discovered?


This topic has 3 replies

Gg

"George"

in reply to "Stephen M" on 04/11/2004 11:02 AM

04/11/2004 12:00 PM

It's got a _loooooong_ gray beard. Any standard woodworking text will have
it.

Note that you can do the same on the face, or take a two-lumper flat, too.
It's the way things are done with a hand plane.

"Stephen M" <[email protected]> wrote in message
news:[email protected]...
> I was recently edge jointing some stoc about 5-6' long for glue-up. (I
find
> that this is approaching the capacity of my jointer with a combined bed
> length of 42". I wasn't paying close enough attenting to my technique and
I
> ended up with a few convex edges. I knew that it was technique and not
setup
> because some of the edges were perfect.
>
> I found that it took several passes on the jointer, carefully watching
> technique to "fix" the convex edge.
>
> I found it easier (fewer passes) to recover from a concave edge than a
> convex one.
>
> So, to "fix" a convex edge, I made one pass on the jointer, dropping the
> stock onto the cutters 6 inches into the cut and lifting it off 6 inches
> before the end, creating a sort-of concavity. One more regular pass and
> everything was just right.
>
> Is this an old trick that I just discovered?
>
>

DH

Daniel H

in reply to "Stephen M" on 04/11/2004 11:02 AM

04/11/2004 11:47 AM

Stephen M wrote:
> Is this an old trick that I just discovered?

It might be.

It's often said it's easier to flatten a slightly-hollow-ground chisel
back (or face) than one that's slightly convex, because a concave one
won't rock on the surface of a flat sharpening stone.

- Daniel

b

in reply to "Stephen M" on 04/11/2004 11:02 AM

04/11/2004 12:46 PM

On Thu, 4 Nov 2004 11:02:16 -0500, "Stephen M"
<[email protected]> wrote:

>I was recently edge jointing some stoc about 5-6' long for glue-up. (I find
>that this is approaching the capacity of my jointer with a combined bed
>length of 42". I wasn't paying close enough attenting to my technique and I
>ended up with a few convex edges. I knew that it was technique and not setup
>because some of the edges were perfect.
>
>I found that it took several passes on the jointer, carefully watching
>technique to "fix" the convex edge.
>
>I found it easier (fewer passes) to recover from a concave edge than a
>convex one.
>
>So, to "fix" a convex edge, I made one pass on the jointer, dropping the
>stock onto the cutters 6 inches into the cut and lifting it off 6 inches
>before the end, creating a sort-of concavity. One more regular pass and
>everything was just right.
>
>Is this an old trick that I just discovered?
>
yep.


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