ss

"sweet sawdust"

10/09/2007 10:16 PM

Strange coating on cast iron

Went to do some bandsaw work today and noticed that my table had a high
friction coating on it. Nothing that I have knowingly put on it would cause
this. I checked my jointer, table saw, drill press and sander and all of
the cast iron tables had a similar coating. Coating is clear with no smell,
no sticky feeling, no rust just a high friction feel. Cleaned all tables
with denatured alcohal and rewaxed and now they are a slick as ever. Slow
drizzel type rain (1/2 inch in 24 hours) has moved in after about 12 weeks
of no rain and about 3 weeks of 100+ temps. Temp today was in the low 80s.
Any one have an idea of what could have caused this?


This topic has 6 replies

TD

Tim Douglass

in reply to "sweet sawdust" on 10/09/2007 10:16 PM

11/09/2007 9:25 PM

On Tue, 11 Sep 2007 21:05:34 -0500, "sweet sawdust"
<[email protected]> wrote:

>
>"Old guy" <[email protected]> wrote in message
>news:CSGFi.97383$Fc.70829@attbi_s21...
>> The pine might be a clue.
>>
>> Any chance it was fairly pitchy and the machines threw pitchy sawdust into
>> the air?
>>
>> Not sure why it wouldn't have affected other surfaces.
>>
>> Old Guy
>Could be. The pine didn't seem very pitchy though and none was used on the
>drill press. Temp was hot enough to fry eggs in the shop so I guess that
>could have something to do with it. Just seems strange that it would show
>up now instead of some time sooner when I was working with the wood. I was
>also working with red oak and poplar during that time and didn't notice any
>problems. I guess I will just blame the pine and temp change and let it go
>at that.
>
The problem wouldn't be at the high temperature, but when it cools and
the humidity goes up. Still, it sounds a bit strange. Might be aliens
at work.

--
"We need to make a sacrifice to the gods, find me a young virgin... oh, and bring something to kill"

Tim Douglass

http://www.DouglassClan.com

Og

"Old guy"

in reply to "sweet sawdust" on 10/09/2007 10:16 PM

12/09/2007 1:00 AM

The pine might be a clue.

Any chance it was fairly pitchy and the machines threw pitchy sawdust into
the air?

Not sure why it wouldn't have affected other surfaces.

Old Guy


"Curran Copeland" <[email protected]> wrote in message
news:[email protected]...
>
> "Tim Douglass" <[email protected]> wrote in message
> news:[email protected]...
>> On Mon, 10 Sep 2007 22:16:44 -0500, "sweet sawdust"
>> <[email protected]> wrote:
>>
>> Just a guess, but the combination of high heat and a sudden change in
>> the humidity probably interacted with the wax, especially if you had a
>> pretty heavy coating on them.
>>
>> --
>> "We need to make a sacrifice to the gods, find me a young virgin... oh,
>> and bring something to kill"
>>
>> Tim Douglass
>>
>> http://www.DouglassClan.com
>
> That was my thought also, but I have never had anything like this happen
> in the past. Wax was Johnson's paste and was well past time to renew so
> it shouldn't have been to thick. Tools did get warm to the touch during
> the hot weather. Wooden and plastic surfaces that were also waxed like
> the cast iron did not show any signs of the coating. Only found the
> coating on horizontal cast iron. It has me wondering what is going on. I
> have been using a lot of pine the past few weeks, I wonder if that may
> have anything to do with it.
>

CC

"Curran Copeland"

in reply to "sweet sawdust" on 10/09/2007 10:16 PM

11/09/2007 11:23 AM


"Tim Douglass" <[email protected]> wrote in message
news:[email protected]...
> On Mon, 10 Sep 2007 22:16:44 -0500, "sweet sawdust"
> <[email protected]> wrote:
>
> Just a guess, but the combination of high heat and a sudden change in
> the humidity probably interacted with the wax, especially if you had a
> pretty heavy coating on them.
>
> --
> "We need to make a sacrifice to the gods, find me a young virgin... oh,
> and bring something to kill"
>
> Tim Douglass
>
> http://www.DouglassClan.com

That was my thought also, but I have never had anything like this happen in
the past. Wax was Johnson's paste and was well past time to renew so it
shouldn't have been to thick. Tools did get warm to the touch during the
hot weather. Wooden and plastic surfaces that were also waxed like the cast
iron did not show any signs of the coating. Only found the coating on
horizontal cast iron. It has me wondering what is going on. I have been
using a lot of pine the past few weeks, I wonder if that may have anything
to do with it.

TD

Tim Douglass

in reply to "sweet sawdust" on 10/09/2007 10:16 PM

11/09/2007 8:40 AM

On Mon, 10 Sep 2007 22:16:44 -0500, "sweet sawdust"
<[email protected]> wrote:

>Went to do some bandsaw work today and noticed that my table had a high
>friction coating on it. Nothing that I have knowingly put on it would cause
>this. I checked my jointer, table saw, drill press and sander and all of
>the cast iron tables had a similar coating. Coating is clear with no smell,
>no sticky feeling, no rust just a high friction feel. Cleaned all tables
>with denatured alcohal and rewaxed and now they are a slick as ever. Slow
>drizzel type rain (1/2 inch in 24 hours) has moved in after about 12 weeks
>of no rain and about 3 weeks of 100+ temps. Temp today was in the low 80s.
>Any one have an idea of what could have caused this?
>
Just a guess, but the combination of high heat and a sudden change in
the humidity probably interacted with the wax, especially if you had a
pretty heavy coating on them.

--
"We need to make a sacrifice to the gods, find me a young virgin... oh, and bring something to kill"

Tim Douglass

http://www.DouglassClan.com

ss

"sweet sawdust"

in reply to "sweet sawdust" on 10/09/2007 10:16 PM

12/09/2007 5:47 AM


"Tim Douglass" <[email protected]> wrote in message
news:[email protected]...
> On Tue, 11 Sep 2007 21:05:34 -0500, "sweet sawdust"
>>
> The problem wouldn't be at the high temperature, but when it cools and
> the humidity goes up. Still, it sounds a bit strange. Might be aliens
> at work.
>
> --
> "We need to make a sacrifice to the gods, find me a young virgin... oh,
> and bring something to kill"
>
> Tim Douglass
>
> http://www.DouglassClan.com

Do you think I should call the X Files?

ss

"sweet sawdust"

in reply to "sweet sawdust" on 10/09/2007 10:16 PM

11/09/2007 9:05 PM


"Old guy" <[email protected]> wrote in message
news:CSGFi.97383$Fc.70829@attbi_s21...
> The pine might be a clue.
>
> Any chance it was fairly pitchy and the machines threw pitchy sawdust into
> the air?
>
> Not sure why it wouldn't have affected other surfaces.
>
> Old Guy
Could be. The pine didn't seem very pitchy though and none was used on the
drill press. Temp was hot enough to fry eggs in the shop so I guess that
could have something to do with it. Just seems strange that it would show
up now instead of some time sooner when I was working with the wood. I was
also working with red oak and poplar during that time and didn't notice any
problems. I guess I will just blame the pine and temp change and let it go
at that.


You’ve reached the end of replies