On May 7, 11:36 am, Todd the wood junkie <[email protected]>
wrote:
> Does it speed up the curing process by exposing to sunlight (UV
> radiation)? Will it hurt if I do this?
Yes. Works fine for the odd utilitarian piece, leaving them out
in direct sun for a few hours at a time. Sure helps cook the
solvents out of the finish, and makes pieces suitable for indoors
use in a few sunny days, max.
J
Mon, May 7, 2007, 8:36am (EDT-3) [email protected]
(Todd=A0the=A0wood=A0junkie) doth mumble:
<snip> Will it hurt if I do this?
If it's real heavy, yes.
By the way, how did you figure on getting the sun toshine on every
side, turntable?
JOAT
What is life without challenge and a constant stream of new
humiliations?
- Peter Egan
dadiOH wrote:
> Todd the wood junkie wrote:
>
>>Does it speed up the curing process by exposing to sunlight (UV
>>radiation)? Will it hurt if I do this?
>
>
> It "cures" by evaporation. Putting it in the sun heats it and speeds
> evaporation. Doing so could also create bubbles. I'd not do it.
>
Polyurethane is a reactive finish that "cures" by reacting with oxygen
causing a chemical change. It's the reason that once "cured" it can't
be redissolved. Sunlight will speed up the evaporation of the "carrier"
but that's about it.
--
Jack Novak
Buffalo, NY - USA
[email protected]
Todd the wood junkie wrote:
> Does it speed up the curing process by exposing to sunlight (UV
> radiation)? Will it hurt if I do this?
UV is not your friend.
Heat speeds up the solvent evaporation process, but not necessarily
the curing process.
Assuming it is late spring and temps are getting warm in your area,
apply poly in the shade of the late morning-early afternoon time frame.
Should be skin hard by the time the dew arrives.
Lew
Todd the wood junkie wrote:
> Does it speed up the curing process by exposing to sunlight (UV
> radiation)? Will it hurt if I do this?
It "cures" by evaporation. Putting it in the sun heats it and speeds
evaporation. Doing so could also create bubbles. I'd not do it.
--
dadiOH
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On 7 May 2007 08:36:58 -0700, Todd the wood junkie
<[email protected]> wrote:
>Does it speed up the curing process by exposing to sunlight (UV
>radiation)? Will it hurt if I do this?
UV ids the enemy of finishes - speeds yellowing/oxidation