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hi there. i recently painted a set of tyres, Gunz tyre black,then gunz clear gloss in preperation for adding the decals. Once the decals where added and left to set ,i than painted over the tyre in gunz matt clear. The tyre had a matt finish for about 1 week ,than slowly lost its matt finish and turned back into gloss again! I repeated the matt coat again,but it did it again. Does anybody have any idea what is causing this to happen and is there any way to stop it from going shinny after a week. thanks
Did you use the lacquers (ie. the spray cans or Mr Color) or the aqueous acrylics?
This is by no means definitive, more an educated guess, but if you used the lacquers, there is a possibility that the solvents have interacted with the plasiciser in the tyres and the plasticiser is leaching through the paint/clear coats. If the painted surface is sticky or tacky, it may well be an indication that this is what is happening.
If indeed this is what is happening (and again, this is only a guess), I am not aware of any way to stop this. In a worst case scenario, the plasticiser will continue to leach out and the tyres may actually melt or split.
When painting (or coating) "rubber" tyres with any sort of paint, always use acrylics.
thanks phil. gunz acrylics were used in finishing the tyres. i have used enamals on rubbber tyres, hoses and wires once before, but never agiain ! the paint NEVER dried. I only use acrylics for rubber parts these days.
A flat paint should be put on thin (although eggshell gloss from too thick a coat usually shows up immediately).
I find I can make semi-gloss from applying gloss coat dry and thin, or flat paint very thick and wet. I even use different airbrush pressures for gloss and flat if I want a really flat flat or glossy gloss.
Don Stauffer in Minnesota
Hi Don,
The issue is that it's going on flat, but gradually turns gloss some time (up to a week) after the application. I would still suspect that there's some interaction between the plasticiser in the rubber/vinyl parts and the paint.
Phil_H Hi Don, The issue is that it's going on flat, but gradually turns gloss some time (up to a week) after the application. I would still suspect that there's some interaction between the plasticiser in the rubber/vinyl parts and the paint.
Are the parts rubber or vinyl? There is a big difference. I hate vinyl tires and wish kit mfgs would not use them!
hi don . I think the tyres are rubber ? They look like rubber. The kit is a revell sprintcar,released about 1997. I dont know what revell made there tyres out of ,around this time ?
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