Will Duratec roll or brush on with good results, or should I invest and spray it?


Will Duratec roll or brush on with good results, or should I invest and spray it?
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Ross Williams
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Good morning,

I'm working on a a small plug which is about 20" by 25" by 8" deep. Photo hopefully attached. I am planning on sealing the mdf with shellac, then coating it with Duratec. It would be simpler to roll it or brush it, unless that results in a lot of sanding. The downside to spraying (for me) is that I have to purchase a spray gun, and set up a lot of plastic sheeting to contain overspray. Also, I'm wondering if spraying the inside corners of a box shape will result in drips, and end up requiring just at much sanding as brushing it.

I'm a complete newb at this. This is the first plug I've made. In the picture, the white/black stripe is the window flange of a Jeep Wrangler hardtop. The part will be a box that inserts where the window used to be. Later, a hinged cover will be made for the box. 

Thank your for your thoughts on this.
 
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Fasta
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Ross Williams - 8/7/2018 4:25:47 AM
Fasta - 8/2/2018 2:15:46 PM
You don't need to change from shellac to another material.

You can completely seal with multiple coats of shellac and then wax and mould from it, this is the old school way before more high tech paints etc.

But then shellac is also very thin and not so good for filling small divits etc, you could also use just duratec alone with multiple coats, either add extra coats at 1-2 hour intervals or let fully cure, then sand and recoat again, sand again, wax and mould from.

Fasta and Hanaldo, thank you for your input. I've decided to experiment by brushing it on some scrap mdf first. It may take a week or two to get to that point, then I'll post up my thoughts afterward.

Ross

That's the way, test these things and know they are right before you go ahead. There is too much work in these things to afford a messup.

Maybe coat in a way that it's thick enough to flow a little but don't go back over any area twice. Things may get worse?? Then hopefully you can get it to 90% pretty good and the final sanding will fix your mould up to 99%.

Good luck.





Edited 7 Years Ago by Fasta
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