Heavy Fill GrayPrimer Paint. Please tell what brand you use. I notice almost every Model Maker use a Heavy Fill Gray.
rcflyer35

I just use gray Krylon primer. Works great, cheap and easy to get.

Krylon primer is fine, but it does not have the filling qualities of automotive high build primers.</p>

Automotive paint store carry the high build primers. The are available in bulk, or spray cans.</p>

In the past, I've used spray cans, but on a large project, the costs become prohibitive.</p>

Thanx much.
rcflyer35

No one mentioned it but you want to use Laquer with Laquer and Enamel with Enamel or when you shoot the color you can end up with a big mess and have to start over..

Thanx, good to know.
rcflyer

i have used an acrylic filler primer from sherwin williams automotive paint store.  i just roll it on and sand it off.  i love it.

If you use rattle can primer, make sure it says sandable. Geeze, Loius !! Once I used that white primer thatdidn't saysandable and it took for ever to sand it down !!!!

MMmmmm...jusr curious. what are you guys using this for exactly?

Most likely to fill in the weave of fiberglass pieces or a fiberglass covered model.

Or it could fill in the grain of woods too I suppose.

I use high build primer to fill the weave, and to fill in any low spots on the airframe. Most of this primer is sanded off, ending up on the shop floor.

Thanx Tom.
rcflyer35

Thanks Tom. Gorgious Stuka!!!

I use Duplicolor High Build sandable primer for filling the weave on glass, and for adding panel lines and rivets.

Scott

MarHyde Ultimate 2K urethane high build primer. It's about $100 for a gallon with the hardener. No need to spray it, use a small trim roller and roll on several coats then sand. Pot life is about 3-4 hours, so plenty of time for it to flash in between coats. Keep in mind that this is an isocyanate based primer and you need to have good ventilation and a proper filtered respirator.

Another good high build primer is Evercoat brand DuraFill primer. It's a polyester filler that is very reasonable cost and has no isocyanates. It's also available in quarts.

http://www.evercoat.com/productDetail.aspx?pID=261

If you don't want to go that route, the SEM High build primer pictured above is a fairly good substitute. Doesn't have the filling abilities of the MarHyde or the Durafill, but in a pinch or for small projects, it'll do.

Both of these are available from most auto paint stores. Some other low cost brands are Transtar and Dupont's Nason.

Rather then primer, what about Sig Finishing Resin?  Use a thin coat just for filling grain in the balsa then light sanding then on to color.  Anyone tried that and what was the out come.  I am finishing a Curare, all balsa, and do not want to Monocoat so elected to fill the grain with finishing resin then add the color paint.  Also what  brand of paint.  Automobile paints are no doubt the best but the price and wast is somewhat prohibited.  By the time get another plane ready to paint, shelf life has expired and about 50% of what you purchased is toast. Krylon is cheep and could cover the entire plane with a couple of coats with no more then two cans.  Then a couple of trim colors and get the whole thing painted for under $20 vs. $150 of automobile paints and $100 is wasted..  I have heard Krylon is also fuel proof but have no first hand knowledge. How about opinions? Is it sandable in case of mistakes?</p>

My son does auto painting and he has found a spray can primer with alcohol propellant that is compatable with any finish coat. He is getting me some today, I'll let you know what he gives me. I think he said SEM.  He warned me about using a spray can primer with other types of propellant as it can make paint from a different system bubble. If you use Duplicolor or Krylon primer use the same brand of paint.

I use Bondo brand primer, available in grey, black, and dark red.  It is as good as Duplicolor in my opinion and less than half the cost, plus I can buy it at the local Ace Hardware.  I'm paying about $4.99 a can.</p>

If I need something with better filling capability than the spay primer I use Bondo brand glazing putty mixed with Acetone.  Makes a superb filler which can be painted on with a brush and is very easy to sand. </p>

My absolute favorite primer is Pactra Prep but it is getting very hard to find at the local hobby shops these days and may be out of production completely.</p>

My .02 cents,</p>

Chad Veich </p>

at $4.99 for a can of spray filler primer it get's expensive.  the automotive primer came in a qt (with a qt of reducer) and cost me $20?   a lot cheaper than several cans of primer per plane.

Plasti Kote laquer primer GOOD but expensive $10.42 a rattle can[:@]