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CNKS
05-30-2004 14:35:40
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Re: SURFACER in reply to jason brice, 05-30-2004 13:01:29
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You will get various opinions on how to fill rust pits, depending on who answers. I believe the last time I did that I used one of Evercoats products -- this is a body filler product, but sands a little easier, still a lot of work. Comes in both paste and semi-liquid forms. There are other brand names also. PPG also makes a sprayable body filler, but I have not used it. I use epoxy primer over the bare metal and filler, others will tell you to use epoxy first, then filler, then more epoxy. I have no problem with that. If you are using PPG Omni, the number for epoxy primer is MP 170. It is not sandable, or at least not easily sandable. Surfacer or primer surfacer is sandable and is used over the the MP170. You do not need surfacer on the cast, epoxy is entirely adequate. The single stage primer surfacer is 181 (I forget the prefix) the 2 part (contains ios's) is 182. 182 will shrink less than 181, but you must use a supplied air system with it. You can apply, sand, reapply and sand, etc 181 or 182 until the surface is smooth. It is possible to use 181 over bare metal, but I would not recommend it as better adhesion will occur if 170 is used first. 182 is not recommended over bare metal at all, if I remember right. Read the spec sheets on all these products before you use them.
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