Started painting spoiler
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Joined: Aug 2008
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From: Joliet, Illinois
be sure to color sand it prior to clear. otherwise orange peel and overspray will be underneath your clear. 400 wet paper should be fine for color sanding. if you get the paint too heavy it'll take forever to dry. and will remain gummy down near where it is touching the primer. did you use a two part paint, with a hardener? if so, then you'll need no clear, it'll polish just like you polish lacquer.
The important thing is to follow the product data sheet for the products you're using.
Color sanding might be a serious no-no with some basecoats - you'll get minimal adhesion of your clear. Color sanding might be OK with the basecoat you're using, but you likely need to go with 800 grit - 400 would leave visible sand scratches.
Getting the paint too heavy... depending on what you use, it might dry fine, but you'll get a host of other problems (like cracking when you shoot the clear).
Hardener? It's used it both basecoats (for added chip resistance - required by GM and other OEM's) - after which you still need to shoot your clear, and, hardener is also used in single stage paints, which have the clear included.
An interesting point on hardener - some people want to add extra hardener to speed up the drying process. Oddly enough, added more hardener *slows* the curing process. If anything, you're better to add a bit too little.
There are so many variables - even within a single type of paint in a single paint line. You may have a choice among a number of reducers, and a number of hardeners, for different temperature ranges, to change the speed of curing - the size of your paint job matters a lot here, air dry or heat... the time between coats varies from product to product... the important thing is to have the product data sheet for the particular products you are using, and follow it. You will get the best results for appearance, adhesion & durability.
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parts eeter
Dyna Glide Models
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Apr 25, 2014 12:55 AM
