On Jun 18, 10:13 am, "abby" <[email protected]> wrote:
> Hi,
>
> My router splinters the top plywood veneer leaving a messy
> looking cut. I've tried cutting in increments with the last as
> small as possible but still get splintering. Even newly purchased
> bits splinter the wood. Is there a solution?
>
> Thanks,
> Gary
try using a backing board - clamp or tape a thin piece of wood over
the cut... the same trick works for cuts made on a table saw, miter
saw, etc. Also used to prevent blowout from the back of a router pass.
1 caveat... make sue the backing board is secure!
shelly
Very common, a down spiral may buy you some latitude but if you can
score the cut line with a knife (not necessarily fun) you can get
tearout free cuts.
*********************http://www.patwarner.com =3D
Routers*********************************
On Jun 18, 7:13=A0am, "abby" <[email protected]> wrote:
> Hi,
>
> My router splinters the top plywood veneer leaving a messy
> looking cut. =A0I've tried cutting in increments with the last as
> small as possible but still get splintering. =A0Even newly purchased
> bits splinter the wood. =A0Is there a solution?
>
> Thanks,
> Gary
"abby" <[email protected]> wrote in message
news:[email protected]...
> Hi,
>
> My router splinters the top plywood veneer leaving a messy looking cut.
> I've tried cutting in increments with the last as small as possible but
> still get splintering. Even newly purchased bits splinter the wood. Is
> there a solution?
> Thanks,
> Gary
>
Cheap - fast = Dampen the wood slightly with a wet sponge (mineral free
water is suggested if that is really good ply...) to reduce tearout.
Less Cheap - slower = place blue tape (low adhesion) along the edge to
reduce tearout
Not so cheap = Spiral upcut or downcut bit. You want the spiral action to
shear the cut from the good face towards the other edge. So if you're using
a hand held router with the good side facing up you would use an upcut bit
to have the shear cut spiral towards the tip of the bit. With the good side
facing down, use a downcut bit so the shear cut is pulling the chips towards
the router.
Bob S.
"abby" wrote in message
> Hi,
>
> My router splinters the top plywood veneer leaving a messy
> looking cut. I've tried cutting in increments with the last as
> small as possible but still get splintering. Even newly purchased
> bits splinter the wood. Is there a solution?
It could be a number of things, including the plywood itself, the speed of
your router, your feed rate, etc.
What type of cut are you making?
The latter is important information to give you a satisfactory answer.
--
www.e-woodshop.net
Last update: 5/14/08
KarlC@ (the obvious)