How to polish resin – different ways of polishing resin

How to polish resinAfter completing your resin project, you may decide you want a shinier finish. Here are a few key steps on how to polish resin.

Determine how hard has your resin cured.

Not all resins can take heat and friction well. Some will make crumbs and can even melt. So how do you know how hard your resin has cured? Determine the type of resin you used for your project.  Polyester and polyurethane resins cure quite hard. Very few epoxies cure hard (like the hardness of glass) but the Resin Obsession super clear resin is one of them. If your epoxy resin has cured, but can be dented with a fingernail or softens with body heat, this is not a hard curing resin.

Hard curing resins: Polish with a buffing wheel and compound

Use a cotton buff and polishing compound appropriate for resins (I use Fabulustre). Let the buff spin, use it to pick up compound, then press onto the resin. You can use a Dremel tool or flex shaft for small projects like charms, but a large buff makes quick work of polishing something larger like a bracelet. Keep the piece moving, meaning you do not want to buff any one area more than a couple of seconds. You also do not want to press the piece into the buff. Let the buff do the work; let it run over the resin charm, but don’t use too much pressure. Go over the entire piece as necessary. Wash with soap and water to remove any polishing compound residue.

Here’s a video showing how to polish resin with a buffing wheel:

Take all proper safety precautions when working with power tools.

Soft curing resins: Polish by hand with polishing compounds

Because soft-curing resins will melt with too much heat and friction, we have to polish them with a ‘lighter’ touch. This is a good time to use polishing compounds meant to be used by hand. The Novus polishing kit works great for this. It is designed for the automotive industry, but works well to polish resin jewelry and charms. Simply follow the steps to use the liquid with the polishing cloth to get a shiny finish. While resin jewelry may not get as shiny a finish as using rotary tools, it does achieve a shinier finish than without buffing.  You can see how to the Novus polishing kit here:

So what other options do you have to get a shiny finish on resin jewelry and crafts if you don’t want to polish it?

1. Recoat with another layer of resin. While it can be a bit messy, another layer of resin will give your resin project a glossy finish.

2. Spray with a couple light coats of resin gloss sealer spray. Make sure your surface is even (i.e. no scratches, dents or divots), then apply lightly to your resin jewelry and charms.  Recoat if necessary.  You can see how to use the spray here:

3. Buff with automotive wax. While it wont give you as shiny a finish as the other options listed above, it’s a quick fix.

I’ve got a comparison of six different polishing options for resin here:

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What other questions do you have on how to polish resin?

 

Unpublished Blog Posts of Resin Obsession, LLC © 2019 Resin Obsession, LLC

8 Comments

Gisele Grenier

Using Flitz is pretty good as well. Use a Dremel with a dampened cotton buff ball, a bit of flitz and buff away. Just before it dries, buff with a clean, dry microfibre cloth

Reply
David Martin

Hello,
WHEN recoating with resin if it is pretty shiny use 1500 wet and dry to give a key all over wipe off with alcohol. If you pour on a shiny surface without keying it will puddle.
Dave

Reply
Travis Thompson

You can find quality Sand papers beginning with the courser grits working down to the very very finest is absolutely key To a polish without additives. The final sanding should be with a grit that is so fine you can barely sunset with your fingertips. 3M now makes a purple cloth back sandpaper selection that is excellent and I take this very last one, and dip it in water and then very very lightly sand until it feels as if you are slipping on ice. When you get that sensation under the fingertips you will find at the resin has now smooth itself to a degree that it is shiny and luster full. At the polishing stage I have found it to be very necessary to not use fast speed and hard friction, one can produce fiberglass!9 also, depending on which brand of resin this last buffing can sometimes be advantageouslydone with some of the powdered Mica and pearls used for pigment ink yet will interact with the surface in a way that will produce more shine.

Reply
Miriam Ricker

What about sanding down rough edges? Could you give a lineup of sandpaper (in order) to use?

Reply
Jennifer

Hey Katherine,

Love your site and demos. A suggestion for the nail polish and the other finish you painted on; don’t skimp on the amount on the brush when you are applying it. The more times you stroke the brush, the more likely you are to get bubbles.

Reply

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