Re: Newbie polyurethane mistake

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Paul B. Brodie" <pbbrodie@xxxxxxxxxxxxx>

Mark,
You just repeated what I said. I said I applied additional coats every ten 
minutes or so and that the instructions on the can said to wait more than 
48 hours before applying additional coats if it has been more than 2 hours 
since the previous application.
My confusion was as to why Tom's polyurethane was staying "wet" or uncured 
under his additional coats. The way I understood his original post, he had 
applied additional coats quickly, as per the instructions, and I didn't 
understand why he would have had the problems with the underlying coats 
remaining uncured. I was just trying to point out that I didn't think he 
had made a mistake by applying additional coats quickly, as that is what 
the instructions say to do and I hadn't had any trouble applying it this 
way in the past. Regards.
Paul
Think Positive

----- Original Message -----
From: "Tesla list" <<mailto:tesla@xxxxxxxxxx>tesla@xxxxxxxxxx>
To: <<mailto:tesla@xxxxxxxxxx>tesla@xxxxxxxxxx>
Sent: Wednesday, June 29, 2005 5:44 PM
Subject: RE: Newbie polyurethane mistake

> Original poster: "Mark Dunn" <<mailto:mdunn@xxxxxxxxxxxx>mdunn@xxxxxxxxxxxx>
>
>
> Paul:
>
> These are the instructions for a spray polyurethane.  Spray laquers have
> the same constraint.  If you wait more than a couple hours before
> recoating the surface will "alligator" and you won't be happy.  So you
> need to recoat quickly or wait the 48 hours.  I learned the hard way.
>
> If you use brush on urethane, it does not have the same constraints.
>
> Mark
>
>
> -----Original Message-----
> From: Tesla list [mailto:tesla@xxxxxxxxxx]
> Sent: Wednesday, June 29, 2005 3:23 PM
> To: <mailto:tesla@xxxxxxxxxx>tesla@xxxxxxxxxx
> Subject: Re: Newbie polyurethane mistake
>
>
> Original poster: "Paul B. Brodie" 
<<mailto:pbbrodie@xxxxxxxxxxxxx>pbbrodie@xxxxxxxxxxxxx>
>
> Tom,
> I'm somewhat confused because the polyurethane I have says to apply
> additional coats within two hours, before it dries. It says to wait 48
> hours, if you wait longer than 2 hours between coats. What kind of
> polyurethane are you using? It isn't the water based type, is it? I
> remember resurfacing a table top once and I know that I applied many
> coats
> of polyurethane spray without waiting more than 10 minutes between coats
>
> and I had no trouble at all. Regards.
> Paul
> Think Positive
>
> ----- Original Message -----
> From: "Tesla list" <<mailto:tesla@xxxxxxxxxx>tesla@xxxxxxxxxx>
> To: <<mailto:tesla@xxxxxxxxxx>tesla@xxxxxxxxxx>
> Sent: Monday, June 27, 2005 11:58 PM
> Subject: Newbie polyurethane mistake
>
>  > Original poster: "Coyle, Thomas M." 
<<mailto:tcoyle@xxxxxxxxxxxxxxx>tcoyle@xxxxxxxxxxxxxxx>  >  >
> Having never worked with polyurethane before, I made what I'm sure is a
> > super-newbie mistake, and I'm wondering if there's any way to rectify
> > it.  >  > I coated my secondary with about 7 coats of polyurethane
> (until I  > couldn't feel the ridges of the turns). Unfortunately, I
> didn't let each  > coat fully dry before putting the next one down. Now,
> the outside is  > rock-solid, but if you press with a finger, the
> coating will buckle and  > peel. The bottom layers are still gelatinous,
> while the top is solid.  > It's been sitting for 6 weeks while I work on
> other things, and that  > inside just won't dry (if I pick off some of
> the top, it's still moist  > below). This would seem to be a great
> testament to how wonderful  > polyurethane is at sealing out (or in)
> moisture.  >  > Is there any way to salvage this secondary? Can poly be
> baked to finish  > curing? Will the gelatinous poly cause flashovers or
> some other  > nastiness? Has anyone ever made this mistake before (say
> yes - it'll  > make me feel better)?  >  > Thanks,  >  > Tom  >  >
>
>
>