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Post by Laurie on Dec 29, 2010 15:37:29 GMT
I am on my second model & questioning everything I do to establish my future mode of working.
I am using Humbrol primer before applying finishing coats. Does this paint have anything special about it as a primer as opposed to the Humbrol finishing coat? ie is it a paint to give a negative colour and/or has it some stickability function that finishing paints do not have.
Putting a primer on builds up the layers & also especially on the 1/72 modes helps to unfortunately obscure the seam marks & details on the aircraft.
Has any one had a failure in the paint due to not using a primer.
Does giving a very fine say 1800 gauge wet & dry provide a good surface for finishing coats cutting out the primer.
House painting primer is cloggy & if Humbrol primer is the same, albeit on a smaller scale, it is worth doing away with it if practical.
Laurie _________________ Oh! I have slipped the surly bonds of Earth and danced the skies on laughter-silvered wings: And, while with silent, lifting mind, I’ve trod The highly untrespassed sanctity of space.
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Post by dvenn on Dec 31, 2010 15:42:06 GMT
Hi Laurie, just spotted your question, i my self like almost all others prime before painting, this gives a good base for future topcoats, most of us use Halfords grey plastic primer in the rattle can, just a few light cots will give a good base and also show up any mould lines ect that you may have missed. You dont say if you are airbrushing on the humbrol primer or are you using a spray can. Hope this helps.
Dave
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Post by Deleted on Dec 31, 2010 17:24:35 GMT
Laurie, you don't mention if you're hand painting or airbrushing primer, I suspect the former. You are correct is assuming that primer fills in minor imperfections but it will also, as you have discovered, obscure any fine detail.
The reason for priming is to to provide a base on the plastic for the top coat to adhere, although there are times when a primer coat is not necessary.
I model 1/24 civilian trucks and if they have a gloss finish I prefer to have a primer coat covering the plastic, although I use a rattle can for this purpose and the top coat(s) are usually manufacturers colours, again from a rattle can.
I also model military vehicles but seldom use a primer on these as the finish is matt acrylic sprayed using an airbrush.
As to your question about adverse effects when not using a primer, well, yes you can have some weird effects. Humbrol paints in the small tinlets seem to be a lot thinner than they were and sometimes require multiple coats to achieve the desired effect. You can also get bleed through on the gloss paints from release agents in the plastic if the kit parts have not been washed sufficiently. I hope the above has been of assistance.
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Post by Laurie on Jan 3, 2011 21:38:14 GMT
Yes thanks for those replies much appreciated.
Tried both on my first model air brush then hand painting. Sticking to air brushing as this for me gives the best finish.
Did find with dark colours over areas of filling, even though these were minor (had primed before assembly which I found was a mistake) took a lot of covering.
Think I will stick to priming for the moment as discovered on small pieces I had not primed I had difficulty in getting good cover.
Thanks again for your time.
Laurie
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