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Heat is not the biggest problem - water vapor is the main culprit. All kinds of problems will occur with high humidity days. If you are using lacquer you will have an especially tough time avoiding blush. Varnish can be problematic but not overly so. Shellac is fairly good to work with on hot days, but almost any finish is susceptible to H20 induced problems. If you are trying to put on a fine finish be especially careful to work earlier in the day rather than later. Your normal quick to dry finishes will do so even speedier on a warm day. Try working on the areas/parts that are least likely to show to get a handle on how your coats are working out. Then go from there.
BTW - the solvents you use will evaporate faster on a warm day so you may need to replenish them. This makes it challenging to maintain the proportions, so make up your finish in the evening for the next day and then keep it sealed tightly.
BTW - the solvents you use will evaporate faster on a warm day so you may need to replenish them. This makes it challenging to maintain the proportions, so make up your finish in the evening for the next day and then keep it sealed tightly.
apparently too hot or humid yesterday and today.:gar-Cr I got some varnish that aint doin right. I realy dont want to start over but....... I'll give it some more time.
Sorry to hear that, is that the bowl mounted on the lathe you are trying to tame ?
yup. that one and a couple more.:gar-Cr
Not too hot, I sprayed sealer and lacquer today with no problems. I have experienced problems when the humidity is high but don't usually have any problems when it is scorching hot. :kamahlitu:kamahlitu:kamahlitu
My temp indicator in the shop (old thermostat) registered "HI". Must have been well over 100 in the shop today. All I know is at the end of the day, I didn't have much sweat left.
Mike
My temp indicator in the shop (old thermostat) registered "HI". Must have been well over 100 in the shop today. All I know is at the end of the day, I didn't have much sweat left.
Mike
Brush painting at temps in the high 90s plus can be very problematic because the coating does not have a chance to flow out or level before the solvents evaporate, and can get sticky so fast you can't tip out the bubbles, etc..
However, contrary to what may seem logical, you do not want to apply the coating extra thick to get it to flow. When applied extra thick, the top still dries very quickly, sealing off the liquid coating beneath it, which can take forever to dry and very well may end up wrinkling. Better to put it on a little thin and have to do a little extra sanding every couple coats to smooth it than ending up with a gummy mess.
For varnish or poly, I usually use wipe-on, and do smaller sections at a time than I would for temps in the 70s/80s. If it starts drying too quick before I can wipe off the excess, I re-wet my rag with mineral spirits.
Make sure you hangs the rags to dry before disposal to prevent any spontaneous combustion, or throw them in a bucket of water.
Not expert opinion, Just relating my experiences.
Go
However, contrary to what may seem logical, you do not want to apply the coating extra thick to get it to flow. When applied extra thick, the top still dries very quickly, sealing off the liquid coating beneath it, which can take forever to dry and very well may end up wrinkling. Better to put it on a little thin and have to do a little extra sanding every couple coats to smooth it than ending up with a gummy mess.
For varnish or poly, I usually use wipe-on, and do smaller sections at a time than I would for temps in the 70s/80s. If it starts drying too quick before I can wipe off the excess, I re-wet my rag with mineral spirits.
Make sure you hangs the rags to dry before disposal to prevent any spontaneous combustion, or throw them in a bucket of water.
Not expert opinion, Just relating my experiences.
Go
good stuff go!:icon_thum but I am beginning to think maybe my finish is getting too old. drying too fast isnt the problem.:gar-Cr it doesnt seem to be drying fast enough!:no: if it aint dry by mornin I'll be takin it off and trying some newer stuff.:tongue2: hate when this happens! luckily its turnings and still in the chucks so redoing is not a big issue:nah:. I think the varnish is a couple of years old.:embaresse ..... I know I know butt... i was just being thrifty.[ spelled cheap!]:rotflm:
I choose to view it as being environmentally responsible in not adding possibly viable materials to the waste stream. Years ago, my ol' man taught me by example how to squeeze a nickel hard enough so that the Indian was riding the buffalo. :rolf::rolf:
Go
that excuse....[reason]works for me!:gar-La; you sure we aint related? sounds like my dad!:rolf: grand dad on the other hand would squeeze them nickels till dimes fell out the rear of the buffalo!:rotflm: he is truely cheap er um [thrifty] :gar-La;
Too hot for the actual finish, or too hot for the operator to stand the heat!
I got up at an ungodly hour (for me anyway) to get a head start on finishing the bird cage cabinet. I figured spraying latex is best done outside.... It's 9:30 now and already I can thin the solution by sweating over the container
Triple digits when it's barely June? What's up with that?
Too hot for the actual finish, or too hot for the operator to stand the heat!
I got up at an ungodly hour (for me anyway) to get a head start on finishing the bird cage cabinet. I figured spraying latex is best done outside.... It's 9:30 now and already I can thin the solution by sweating over the container
Triple digits when it's barely June? What's up with that?
Apparently you do not follow the news closely, due to continental plate drift, Wake county is now 400 miles SOUTH of the equator :rotflm:
This is the third time I have typed this - I keep getting knocked off the net for some reason - I brushed stained a frame this past Tuesday I thought that it would be to humid to leave it in the shop so I brought it into the house and laid it where the son would hit it and today still not dry :no:-So I took it back out to the shop and grabed a rag and the stain and dipped the rag into the stain - started to rub the frame with the stain and the old started to come off - so I did the whole frame that way and now it has a thinner coat and a different look - My wife left to pick our son up at the pool and I put the frame in our oven @ 200 degrees for about 15 minutes - I sure pray that she does not notice the stained white oak aroma:eusa_doh:
And here you thought that powder coat finishing could not be done at home :rotflm:
Bas,
You just haven't been in NC long enough yet. I can remember a week in January when the temps were so warm girls on State campus were laying out in bikinis! A few years before that the small pond behind my parents house froze over and had 6 inches of ice on it - yes, I walked on it and I chipped a hole through to measure. For the summer months, I can remember more than one day when the temps hit 100 + degrees and 100% humidity - just the standard fare for NC. :rotflm:
I used to spend those 100/100 days out in the woods around Yates Mill Pond helping teach classes on natural history; wearing long sleeve shirts, long pants and my dad's old army boots!:kamahlituWhat the &^*! was I thinking? After that this weeks' temps are really remarkably comfortable (wearing shorts, t-shirts and sandals!).
Chris
I guess my stain is to old also - I stained a picture frame last Tuesday evening and brought it into the house - I thought that it would be to humid out in the shop - I even laid it where the sun would hit it - This past Sat. still not dry - I took it back out to the shop and took a rag and dipped it in the stain and started rubbing - the old stain started to come off - so I did the whole frame that way and now it has a thinner coat and a different look -
Yeah, yeah, and you had to walk 18 miles to school, in the snow, uphill both ways :tinysmile_tongue_t: I'm sure it got hot before, even in January. But this kind of heat in early June isn't normal. Let's face it, just because FredP happened doesn't mean he's normal :rolf:
I'm just peeved about the weather because I have this nice air-conditioned shop, but I'm spending my time outside spray painting that darn cabinet. Nothing like being out in 102 degree weather wearing a respirator, spraying a coat of latex and then when you're almost done a drop of sweat escapes plopping right in the middle of your fresh coat of paint. :BangHead::BangHead::BangHead:
I sprayed WB lacquer this morning and yesterday morning. It dried quick, but I didn't have any issues with it. The only problem I had was dripping sweat and having to clean it up. I figure the high temps gave me a "baked on" finish.
I put on a coat of stain last wednsday, did it in the house to get it to dry quicker. When I got back from the beach Sunday night, it's still real tacky.
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