Friday, June 5, 2020

Why isn't My Resin Shiny?

Are you a fan of smooth, glossy resin and the way the light makes the colour look so rich and vibrant? Does it make your heart sing when you see that highly polished, light-reflecting surface that you can see reflections in?

Or do you prefer the look of matte resin and the way light is absorbed by it, giving it a flat, frosted, almost sea-glass look?

It's definitely a personal preference and there are plenty of pluses for both looks. 

But most people new to resin jewellery making want their resin to be glossy. 

And how do I know this? Because it's one of the most asked questions by new Resinistas, 

"Why isn't my resin shiny when I take it out of the mould?"

The anticipation and excitement they felt when demoulding their first resin piece soon turned to disappointment when it came out with a matte finish. But why did that happen? The back was shiny and glossy, so why wasn't the front?

Well, there's actually a very simple answer to this question.

It all depends on the surface of your mould. 

If the mould was made from a glossy object like a glass ring, the surface of the mould will be as shiny as the glass too. But more importantly, so will every resin piece you cast from it. 

Take a look at the inside of this ring mould. You can see that it's shiny. That means the castings will be shiny too!

Holding open a semi transparent silicone mould to show the glossy mould surface

On the other hand, if the mould was made from a matte object like the ring mould below was, then every resin piece you cast from the mould will also be matte.
Holding open a pink silicone mould to show the matte mould surface

To see what that looks like in real life, I've cast resin into each of these two ring moulds. I mixed up and coloured enough resin to fill the two moulds so that the colour in each one would be identical.

And yet, look how different they are from each other (other than the shape, that is!). 
A pink an orange domed ring with a matte surface and a pink and orange ring with a faceted glossy surface

On the left, the matte ring and on the right, the glossy ring. Both are beautiful in their own right and it's just a matter of personal taste or the look you're after as to which one you'd choose. 

The matte resin absorbs the light, making the colours softer and more subdued. In the glossy ring, the colours look more saturated and vibrant.  

It not only demonstrates the two different finishes, but it also shows how the texture of the mould influences the way we see the colour!

So if you like that highly polished, shiny finish on your resin castings, the easiest way to get it is to use a mould with a glossy finish. 

But there is another way to get that highly polished look if you've started out with a less-than-glossy mould. 

Take this bangle with its smooth, satin finish. It reflects some light but it's not what you'd call glossy. 
Red and orange half-round bangle with a satin finish

It can be brought up to a gloss finish with a bit of elbow grease and the Micro-Mesh polishing system.

The system has 9 wet/dry sanding pads in grits ranging from 1500 right up to 12,000. If you work your way up successively through each of the grits, you'll achieve a glossy finish on the resin, like the bangle below.
Red and orange half round bangle bracelet with a smooth, shiny finish

But you don't have to stop there. You can take it up an extra notch to an ultra-high gloss finish by buffing the resin with Flitz liquid abrasive and a soft flannelette or microfibre cloth.

This last step gives the resin a glass-like finish.
Red and orange half round bangle bracelet with a highly polished finish

So if you're resin pieces seem dull and lifeless when you remove them from the mould, bring them to life by polishing them. It takes a bit of elbow grease but it's totally worth the effort!


Inspiration sheet with image of matte orange and pink ring and text "What did I do wrong - my resin isn't shiny"

'Til next time..... 

If you can't get enough of My Tutorials and you want even more inspiration, click here to find my books and printable pdfs

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