Need Help Using Resin - Please-

Hello! I just started to make things with resin. I could really use some help. What is the best way to sand rough edges, when do you do that, how is it done? What should I use to seal it and give it a high gloss shine? Any and all tips would be greatly appreciate. Thanks so much!

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caitlinsdad8 years ago
Maybe after you do your best with wet sanding, 220-400 grit fine sandpaper, use the stuff to take out the haze in automotive headlights. It is a liquid type polish that is supposed to remove the fine scratches in hard plastic headlights and found at an auto parts store. You might want to try toothpaste as your polishing compound. I think the gel-types actually have a harder or finer grit. I remember using that to polish watch crystals and it worked. Good luck.
bellarachel (author)  caitlinsdad8 years ago
thanks so much. I will definitely look for the stuff at the automotive store. Thanks for the tip about the toothpaste. :-)
I've had pretty good luck with Novus #1 and #2 plastic polishing compounds. I got mine at Tap Plastics:
http://www.tapplastics.com/shop/product.php?pid=428&
bellarachel (author)  BuildMakeCraftBake8 years ago
thanks so much. I think 1 and 2 both sound great. I'll have to try them soon. I finally got my dremel for sanding, dremel 300. having some trouble getting it right, but hopefully it'll get easier. thanks again!
gmoon8 years ago
Try some of these techniques.
bellarachel (author)  gmoon8 years ago
Hi gmoon. Thanks, that was really great!!! Do you think all of those products will work on resin? I mean the rubbing compound, jewelers rouge, and polish? Also, I'm going to be doing this pretty regularly, is there a faster or easier way to do it? I've got the sanding part down, but buffing and polishing I still need help with. Last question, when I have to drill a hole in the resin, do I do that before the sanding and finishing or after? THANK YOU!
Yes--these techniques work on paint, they will work on hardened resin. Any drilling, cutting, etc. should be done before the final polishing. There's a whole class of motorized polishing equipment available. If you do this a lot, look into that. You can always try a high-gloss clearcoat spray, but I don't think the final effect is as nice as polishing. But if it's "assembly-line" quantities, it's an option. I've tried toothpaste as a polishing compound--it works, but isn't as fine as the real stuff. It's an old autobody repair trick. It certainly doesn't give a high-gloss shine like jewelers rouge. There are other liquid polishing compounds that are fine enough, if you wish to forgo the rouge step.
lemonie8 years ago
Is this polystyrene resin, or a styrene poly(I forget) mix? If you get the resin at the right point you can trim with a sharp knife. Once it's fully hardened sandpaper works fine. It shouldn't benefit from a 'seal' but you may find that spraying it with something is the easiest way to achieve the high gloss finish (polishing to a shine is hard work without specific power tools) L
bellarachel (author)  lemonie8 years ago
Hi! Thanks for your reply. It's clear epoxy resin. I've been using sand paper, but it seems to take forever and it leaves the resin looking... cloudy. If I use a spray, will that get rid of the cloudyness? After I use the sand paper, do I have to buff or polish it or anything like that? Or do I just put the spray on it? Thanks so much for all of your help.
With sand paper you have to use finer and finer grades, and yes you do need to buff and polish - it's a drag I know. But if it's flat ordinary paper works fairly well as v fine sand paper. What makes it look cloudy are all the tiny scratches caused by the sandpaper, if you sprayed it with some kind of lacquer (and I don't know what to advise here) it would fill these in and give you a smooth surface. L:
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