dirk tinck Posted February 23 Share Posted February 23 Hi all , I'm having problems painting decals on my fouga magister (building blog in the electric ducted fan section ) Sinds my decals were ruined (protective paper sticking) i had some paint masks made by a friend. I'm trying to use them now on my fresh painted surface. I placed the mask in the right position , masked the rest with paper against overspray and painted the decal with VALLEJO model paint.(water based acilic ). When finished and after 10min waiting i tried to pull away the mask and the paint of the decal came off like it formed a skin together with the paint on the mask ! Can anyone tell me what went wrong ? Schould i wait longer to peel off the mask ? Wrong paint ? Any help is very appreciated ! Thanks , Dirk Quote Link to comment Share on other sites More sharing options...
Allan Bennett Posted February 24 Share Posted February 24 What paint type was the "fresh painted surface"? I've had a similar problem locally sometimes, though I can't remember the circumstances. Perhaps the surface needs very slight rubbing down before applying the mask and then spraying (or were you brushing?). Incidentally, are you aware of the "trick" to prevent visible bleeding under the edges of the mask? Simply apply a fine coat of the underlying colour around the edges of the mask, and let it dry before applying the required design colour. 2 Quote Link to comment Share on other sites More sharing options...
alan p Posted February 24 Share Posted February 24 Agree with Allan, recommend using under lying colour to seal the edges of the mask, to prevent colour bleed. If its going onto a gloss type finish, the Vallejo might not be keying to the surface as it's water based. Very light rubbing down may help, and degrease before applying paint. Been following the build blog from the start (how many years now?) 1 Quote Link to comment Share on other sites More sharing options...
Engine Doctor Posted February 24 Share Posted February 24 Base coat should be fully dried/ cured then cleaned thoroughly . Mask applied and sprayed with a similar paint that will adhere . If you can abrade or key the base coat lightly in the the mask with some very fine abbrasive that will help, do so being careful not to lift edges of mask . Spray light coats and when happy with coverage remove the mask while paint is wet. Masks or masking tape will mark uncured paint very quickly . Removing them while paint is wet or very soft prevents a rough or torn edge. Were the masks made from a low tack sheet ? Any agressive adhesive can damaged fresh paint . What was the base coat type , solvent or water based ? 1 Quote Link to comment Share on other sites More sharing options...
leccyflyer Posted February 24 Share Posted February 24 The "trick" that I use to seal the edge of self adhesive paint masks is to burnish them down onto the background paint layer and then give the edge a coat of clear water based polyurethane varnish to seal the edge. That will work for any base colour, without necessitating spraying of an initial coat of the underlying colour, which can be impossible where the markings being applied straddle more than one underlying colour - such as spraying the upper wing and fuselage roundels on a standard RAF Day Fighter camouflage scheme. You aren't going to ever see that clear coat, it's just there to prevent bleed under the mask by capilliary action. It might not always catch every wee bleed, such as where there are embossed panel lines on foamies, so be prepared to have to do a very small amount of touch up afterwards. 3 Quote Link to comment Share on other sites More sharing options...
dirk tinck Posted February 24 Author Share Posted February 24 Hi all, Thanks for the input ! I tried again this evening after giving the base a light sanding (the base is water based varnish ). Took away the mask direct after spraying the paint , so far so good ! Many more to go ! Thanks again ! X 2 Quote Link to comment Share on other sites More sharing options...
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