Barks1 | 28 Mar 2014 4:39 a.m. PST |
Hi all, 1) How long after a spray gloss varnish should I wait before applying a spray flat varnish? 2) How long after the spray flat varnish should I wait before applying flock? Thanks! |
Fat Wally | 28 Mar 2014 6:07 a.m. PST |
1) Personally I'd leave it overnight. 2) If possible I'd leave it overnight but many, many times I have flocked after 30 minutes or so. Depends what matt varnish we're talking about. I use Testors Dullcoat. |
Todd636 | 28 Mar 2014 6:10 a.m. PST |
It depends a lot on the humidity, but as Fat Wally says, you can never go wrong with waiting overnight. The problem you could run into is it seems dry and you apply a second finish trapping the moisture between layers. |
Grelber | 28 Mar 2014 6:16 a.m. PST |
I wait 24 hours before applying the flat varnish. Grelber |
thosmoss | 28 Mar 2014 6:42 a.m. PST |
Overnight -- always try to have at least two things going, so when one hits the inevitable wall of "set it aside overnight", there's something in hand to get cracking on. |
Dervel | 28 Mar 2014 7:07 a.m. PST |
Depends on the product.. Enamels even overnight could be too soon
. 24-48 hours some enamels take a week to truly setup. Lacquers can set up in minutes. If you are working with Testors dullcote or Krylon spray lacquers then overnight between gloss and flat should be fine (make sure it is dry where you spray!)
flocking 30 minutes with these products is usually good. |
Feet up now | 28 Mar 2014 10:20 a.m. PST |
I leave overnight. I believe most cans have small print suggesting similar time spans. |
Rich Bliss | 28 Mar 2014 10:27 a.m. PST |
As pointed out, it is highly variable, depending on things such as temperature, relative humidity and even atmospheric pressure and airborne particulate count. 24 hours is a bare minimum, if you can be patient and wait 48-72 hours, you'll be better off. |
CPBelt | 28 Mar 2014 1:26 p.m. PST |
Good topic! Made me do some needed reading on the topic! I went right to the manufacturers. Testors and Humbrol Glosscote recommend waiting 24 hours for the varnish to dry (cure) before applying Dullcote. Vallejo says the same for their gloss varnish. This is for spraying thin layers. If sprayed as a thick layer, it will take longer. Testors says up to three days. Vallejo says three days as well if brushed on. From Testors on humidity and paints: "The average drying times for Testor paints, lacquers, putties and cements are affected by changes in temperature and humidity, especially for paints. For example, you should wait another 12 hours paint to dry if the humidity is above 50 percent and 24 more hours if it is above 80 percent." Pretty interesting stuff. BTW I always say I'll wait 24 hours, but until I get around to it again it's days later. Never bothers me. The longer paint/varnish cures, the more confident I am that it has cured 100%! |
Timmo uk | 28 Mar 2014 3:28 p.m. PST |
I wait at least 72 hours between coats of varnish but I'm never in a hurry to get anything finished. |