Gs

"Gramps' shop"

31/07/2019 12:08 PM

Cross-grain thru planer?

How likely am I to get tear out running a small glued up panel cross-grain thru my planer?


This topic has 5 replies

b

in reply to "Gramps' shop" on 31/07/2019 12:08 PM

31/07/2019 12:51 PM

On Wednesday, July 31, 2019 at 3:08:24 PM UTC-4, Gramps' shop wrote:
> How likely am I to get tear out running a small glued up panel cross-grain thru my planer?

Haven't done this, but have seen recommendations that you allow for sacrificial lumber fore and aft of the panel...

Ll

Leon

in reply to "Gramps' shop" on 31/07/2019 12:08 PM

31/07/2019 3:20 PM

On 7/31/2019 2:08 PM, Gramps' shop wrote:
> How likely am I to get tear out running a small glued up panel cross-grain thru my planer?
>

Not all wood has grain that goes the length of the board. A lot
actually curves around a knot or where a limb may have been. Do you get
tear out on those type boards? If so you will get it also going cross
grain.

dn

dpb

in reply to "Gramps' shop" on 31/07/2019 12:08 PM

31/07/2019 2:17 PM

On 7/31/2019 2:08 PM, Gramps' shop wrote:
> How likely am I to get tear out running a small glued up panel cross-grain thru my planer?

What species and what shape are your knives?

Pretty high regardless altho very sharp and very slow and very thin can
minimize in non ring-porous species.

--


dn

dpb

in reply to "Gramps' shop" on 31/07/2019 12:08 PM

31/07/2019 5:55 PM

On 7/31/2019 2:17 PM, dpb wrote:
> On 7/31/2019 2:08 PM, Gramps' shop wrote:
>> How likely am I to get tear out running a small glued up panel
>> cross-grain thru my planer?
>
> What species and what shape are your knives?
>
> Pretty high regardless altho very sharp and very slow and very thin can
> minimize in non ring-porous species.

OBTW...presuming your panel is at least somewhat smaller than the planer
capacity, use as much of an angle as you can rather than running thru
directly at 90 degrees...

--

Jj

Jack

in reply to "Gramps' shop" on 31/07/2019 12:08 PM

04/08/2019 8:12 AM

On 7/31/2019 3:08 PM, Gramps' shop wrote:
> How likely am I to get tear out running a small glued up panel cross-grain thru my planer?
>
More likely than planing with the grain. Less likely with a segmented,
spiral cutter head... Super thin cuts, and super sharp blades would be a
must I'd think...

--
Jack
Tolerance is the virtue of the man without convictions.


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