Starfighter Posted May 17, 2016 Share Posted May 17, 2016 Hi guys,Forgive me if this subject has been discussed before, but I'm after a little advice. I have just sprayed the first matt coat, using the Humbrol product, on my 1/24 hurricane, and seem to be getting a very slight "Frosting" on one or two areas, and wondered if any of you might have any tips on why this might be happening ? I'm using a brand new bottle of Matte cote, thinned with a brand new bottle of white spirit, and sprayed through my Badger 200 airbrush. I've not had this problem before, so is there something I'm not doing right ? In all probability I shall finish the model with a satin coat anyway, but the matt makes a good base for weathering powders, etc. but I'm just wondering why I seem to get this effect, as it's never happened before. Any advice would be gratefully received. I should state that I only use enamels, as I can't get on with acrylics ( Better the devil you know and all that !) 1 Link to comment Share on other sites More sharing options...
Silver Fox Posted May 17, 2016 Share Posted May 17, 2016 It could be caused by damp, either in the atmosphere or even from sweat on your fingers. Generally the cure is to re gloss and start again but if it is just small areas it could be touched up. Link to comment Share on other sites More sharing options...
Starfighter Posted May 18, 2016 Author Share Posted May 18, 2016 Thanks for the info, Silver fox. I shall bear that in mind when I add the final coat. Link to comment Share on other sites More sharing options...
dubster72 Posted May 18, 2016 Share Posted May 18, 2016 The 'frosting' or white bloom effect is almost invariably caused by insufficient mixing. The white is the raw matting agent. Damp, humidity & excessive temperature also have a negative effect, but I've used Humbrol Matt Coat for years without problems - as long as I've stirred it well! Link to comment Share on other sites More sharing options...
dwh Posted June 8, 2016 Share Posted June 8, 2016 Today I heard via my local model shop that a major stockist and trade supplier are now refusing to stock and sell Humbrol Matt varnish until they sort out this clouding and white bloom effect. They have had no end of retailers returning this varnish. So maybe there really is a problem with it, and it is not just us modellers. Link to comment Share on other sites More sharing options...
Julien Posted June 8, 2016 Share Posted June 8, 2016 The quality of all humbrol products has fallen dramatically, if they are not careful no one will buy it anymore. There are a lot of alternative paints out there now. Link to comment Share on other sites More sharing options...
lesliegl Posted June 8, 2016 Share Posted June 8, 2016 I have bought all 3 of the acrylic clears here in Australia and both the matt and semi matt have had the white frosting problem no matter how much you shake/stir them..the gloss I've had no problem with..the other two are basically unusable and total waste of money.. Leslie Link to comment Share on other sites More sharing options...
Deadman Disciple Posted June 10, 2016 Share Posted June 10, 2016 You need to give it a right good shake & sometimes a little stir aswell before use. Before I use Mattcote, I give it a good 2-3 mins shake, swapping it in each hand. Wayne. Link to comment Share on other sites More sharing options...
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