Newbie epoxy polishing problems


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Bhamoggy
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Hi

So table now done but struggling to get anywhere near the gloss finish that you see from the original pour before sanding. Have bought the NW1 to try but still a bit cloudy.
I applied the NW1 and used a polisher but on a slowish speed. Put the compound on and used polisher straight away. Have done this twice. Am I doing it wrong? Should I leave the NW1 on for a while before polishing? Not getting the expected results I’d hoped for as yet



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Bhamoggy
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Have done a 3mm pour having removed stones. Don’t want them coming straight thru the underside because of sanding. Will leave it 12hrs now then place the shells back as the resin should be tacky by then.
My thoughts are then to do another 3mm pour just to secure everything and leave for another 12hrs before final pour.
Table depth is 27mm
Any thoughts on this or better suggestions.
First pour done at 9am today and now 4hrs on
Warren (Staff)
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Minimum 1200 grit, ideally 1500 grit or better.  You polish it for as long as it needs. Diminishing polishes you will feel it as they break down and move easier becoming finer.

The shells look good, but you may need to secure it all down with a thin layer of resin to avoid things floating away. 


Warren Penalver
Easy Composites / Carbon Mods - Technical Support Assistant
Bhamoggy
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First attempt and not sure which side to have as top surface yet. Gonna use a clear gloss yacht varnish and see what it looks like after.
Already preparing for second project.
Gonna be a Brighton beach table. Just laid out in preparation. Will do 3mm first pour hopefully tomorrow.
What do you think of this?




myakpaul
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Bhamoggy - 10/18/2018 7:28:39 PM

looks good. second photo has great depth of colour to it and nice grain to the wood. Thanks for sharing it

Bhamoggy
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Bhamoggy
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First attempt so not gone too big. It’s 28” x 9 “
Not too happy with it at the moment. Think I expected a better finish than I’ve got so far.
Here’s the top and reverse of the table.
Trying to upload pic but it won’t do it ???
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myakpaul
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Bhamoggy - 10/17/2018 8:55:06 PM
Same here. Just completed first river table. Sanded down thru the grits to 2000. Using nanotech cut and polish 2 in 1 but can’t get a gloss finish. Still looks a Matt finish. ?Not sure what to do now

Glad its not just me! Smile
how big is your table?

myakpaul
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Warren (Staff) - 10/18/2018 8:16:59 AM
There is a bit of a technique to sanding, mostly cleanliness and ensuring you do not move up a grit until you are 100% sure you have removed the necessary scratches.  Otherwise you will struggle to get a gloss finish at the end. Also bear in mind that many diminishing nano abrasives  (such as our NW1) will require a fair bit or working to break them down from the initially coarse compound into a finer polish.  If you polish it off too soon before the polish has broken down then the gloss will be poor.

Also be aware  to ensure you have left the resin long enough to cure in the first place.  We recommend a minimum of 48 hours at 20C before any sanding or shaping takes place - if your room cools over night, you might be trying to sand green resin which will always be difficult.

Warren,
Thanks for the info, just a couple of questions. What grit do i need to sand down too? Could you also explain what you mean by the polish breaking down? Do you mean that i need to polish for longer with the polishing machine? if so how long do i need to polish for?

Thanks alot

Myak

Warren (Staff)
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There is a bit of a technique to sanding, mostly cleanliness and ensuring you do not move up a grit until you are 100% sure you have removed the necessary scratches.  Otherwise you will struggle to get a gloss finish at the end. Also bear in mind that many diminishing nano abrasives  (such as our NW1) will require a fair bit or working to break them down from the initially coarse compound into a finer polish.  If you polish it off too soon before the polish has broken down then the gloss will be poor.

Also be aware  to ensure you have left the resin long enough to cure in the first place.  We recommend a minimum of 48 hours at 20C before any sanding or shaping takes place - if your room cools over night, you might be trying to sand green resin which will always be difficult.


Warren Penalver
Easy Composites / Carbon Mods - Technical Support Assistant
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