Hi All,
Recently got a Grizzly 1023 table saw and was setting it up last
night. Once I had finished cleaning the gunk off the table i noticed
white splotches on the surface. They look like mineral deposits or the
kind of ghosting you might see from water damage in a finish. The
surface is smooth, not pitted. I'd like to know if this is just
cosmetic or perhaps a problem with the casting that could be a problem
later on. The extension wings did not exhibit this flaw. I cleaned the
surface with mineral spirits and a rag. Did same process with several
other tools: bandsaw, jointer, shaper, sander etc and they all look
fine.
Thanks for your feedback.
-Todd
On 3 Feb 2004 10:18:09 -0800, [email protected] (Todd Scarola)
wrote:
>Hi All,
>
>Recently got a Grizzly 1023 table saw and was setting it up last
>night. Once I had finished cleaning the gunk off the table i noticed
>white splotches on the surface. They look like mineral deposits or the
>kind of ghosting you might see from water damage in a finish. The
>surface is smooth, not pitted. I'd like to know if this is just
>cosmetic or perhaps a problem with the casting that could be a problem
>later on. The extension wings did not exhibit this flaw. I cleaned the
>surface with mineral spirits and a rag. Did same process with several
>other tools: bandsaw, jointer, shaper, sander etc and they all look
>fine.
>
>Thanks for your feedback.
>
>-Todd
it may be signs of the casting not being properly seasoned prior to
machineing. it may be fine as it cures or it may warp as it cures.
american foundries used to fully cure castings before they would
machine the final product but i doubt that the chiwanees foundries
do.cast iron moves as is cures. if you dont wait for it to cure you
can wind up with warped sagging or twisted parts. just one of the
downfalls of the modern global economy IMHO. skeez
Todd,
you should be good to go if it's not pitted. Shine it up a bit with
some abrasive pads, and apply a coat of paste wax (with OUT silicone) ,
like SC Johnson's paste wax). You will end up with "cosmetic" blemishes
on the top from normal use, anyway.
dave
Todd Scarola wrote:
> Hi All,
>
> Recently got a Grizzly 1023 table saw and was setting it up last
> night. Once I had finished cleaning the gunk off the table i noticed
> white splotches on the surface. They look like mineral deposits or the
> kind of ghosting you might see from water damage in a finish. The
> surface is smooth, not pitted. I'd like to know if this is just
> cosmetic or perhaps a problem with the casting that could be a problem
> later on. The extension wings did not exhibit this flaw. I cleaned the
> surface with mineral spirits and a rag. Did same process with several
> other tools: bandsaw, jointer, shaper, sander etc and they all look
> fine.
>
> Thanks for your feedback.
>
> -Todd
They used to throw the castings outside to weather for 6 months to a year.
That allowed relieving of internal stresses which result in movement. They
would then sandblast and mill the final product which would give a cast-iron
table that hopefully would not move.
Preston
<[email protected]> wrote in message
news:[email protected]...
> On 3 Feb 2004 10:18:09 -0800, [email protected] (Todd Scarola)
> wrote:
>
> >Hi All,
> >
> >Recently got a Grizzly 1023 table saw and was setting it up last
> >night. Once I had finished cleaning the gunk off the table i noticed
> >white splotches on the surface. They look like mineral deposits or the
> >kind of ghosting you might see from water damage in a finish. The
> >surface is smooth, not pitted. I'd like to know if this is just
> >cosmetic or perhaps a problem with the casting that could be a problem
> >later on. The extension wings did not exhibit this flaw. I cleaned the
> >surface with mineral spirits and a rag. Did same process with several
> >other tools: bandsaw, jointer, shaper, sander etc and they all look
> >fine.
> >
> >Thanks for your feedback.
> >
> >-Todd
>
> it may be signs of the casting not being properly seasoned prior to
> machineing. it may be fine as it cures or it may warp as it cures.
> american foundries used to fully cure castings before they would
> machine the final product but i doubt that the chiwanees foundries
> do.cast iron moves as is cures. if you dont wait for it to cure you
> can wind up with warped sagging or twisted parts. just one of the
> downfalls of the modern global economy IMHO. skeez