Pattern coat primer application


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Matthieu Libeert
Matthieu Libeert
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thats interesting Mark, still have a video to make about the primer and gloss on plugmaking I'll keep that in mind while making the video and trying the materials for the first time Smile

Matthieu Libeert
Founder MAT2 Composites X Sports
website:
www.mat2composites.com




MarkMK
MarkMK
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Even with spray application you need to bargain on a fair bit of flatting to get it nice and smooth. I now use a half and half mix of primer and gloss, usually a couple of coats to give plenty of material to flat back. The resultant satin finish that transfers to the mould is then fairly easy to bring up to a good shine with the machine polisher and compound. 
I just find that this combination provides the best of both worlds in terms of hard finish and (fairly) easy sanding 

Olivier
Olivier
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Hi,
I used EC Pattern Coat Primer and HI-Gloss to make this plug.
After lots of coats I gave up and finished it with the HI-gloss then sanding and polishing to make moulds with EC Uni-Mould range of products.

I gave up probably because the part made of plaster and filler was too rough and I sanded trough the primer each time. So it took a long time to have a decent plug.
At first I wanted a nice uniform black plug but...
Finally plugs were fine and moulds were easy to build.

Hope this helps


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Dravis
Dravis
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I had the same problem with my last batch of EC Pattern Coat primer ... I thought it might be the temperature in my workshop being a bit low .. So I heated the Primer coat a bit, to maybe 25 degrees . That helped a bit, but I still had quite a bit of sanding to do..

The gloss pattern coat was a bit better, but still had brush marks and uneven surface i some areas .. They are good products, but not "perfect" Cool

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Ian Mantula
Ian Mantula
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I've been building my first plug for the air conditioning housing on my Marcos Mantula. While I'm quite happy with the way it has turned out in general I am finding the application of the pattern coat primer to be more difficult than shown in the Easy Composites video. I've tried using a brush and a roller, but can't seem to get to the stage where it only needs minor sanding. There always seems to be new imperfections with each coat.

Maybe the working time is too short. I try to mix accurately using digital scales, but never seem to get a consistency that allows the brush or roller marks to flow out. Any ideas what I'm doing wrong?

Thanks
Edited 10 Years Ago by Ian Mantula
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