DP74 Red Oxide Primer
 

Guys.. never been much of a painter, so make no claims here to my abilities. But, when applying PPG DP74 red oxide on restored parts it is drying flat. ANy thoughts on what I am doing wrong that is causing this?? Seen many freshly restored cars with DP74 and it seems to look semi gloss.My result is as flat as it can be, not a hint of gloss.. any help/ideas are appreciated.. thx..

Old hardener,wrong reducer or wrong reduction ratio's could cause this to happen.

Yea.. new hardener,bought /shiped same time as paint.. Goes on nice a slippery looking, but dries just as flat as flat gets.. have been "eye'ing" the mix ratio, guess will do a dead on correct ratio using weight and volume to see if results are better..

I've had that happen a few times but never could figure out exactly why so far. Luckily in those cases it was being topcoated with other primers and paints so wasn't a big concern, but if you are going with the DP by itself then the gloss can look nice. I suspected humidity or too high of ambient temp, but doubt you are running into that this time of year.

Just yesterday my new DB150 was delivered so now I can prep just about anything for paint. It is a sturdy piece of equipment.

http://dustlessblasting.com/DB150.html


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Put on 2 coats, then reduce it 25-30% and apply 2 more. A slower reducer will also help.

For me I've done the same mix twice in a row and had flat one time and glossy the next and can't put my finger on anything that changed in between. In fact the glossy was later in the day when it was warmer but not as humid so I, at the time, discounted reducer being a factor. Maybe I'll call PPG if it happens again and see what they say.

Oddly, the flat look seems more like primer should look.

I went a slightly different route using Dupont red oxide epoxy primer (which is more brownish) then having a custom paint mix made (as flat as possible) to match the original primer color. The amount of hardener added then determines the sheen. It worked out well and now the bottom and interior are actually PAINTED to look like the original primer.