After being a smidge disappointed with my bi-color resin earrings tutorial results from a couple of weeks ago, I wanted to try making ombre resin charms again with a couple of technique adjustments. This time, I wanted to get the ombre effect in the resin from the center outwards. To do this, I knew I was going to need a ‘guide’ of sorts to help direct the resin.
I went to my metal collection and found a section of 5/8 inch wide silver tube that I thought would be a good fit for the one inch round circle silicone mold I was going to use. Note: The tube didn’t have to be silver. Other metals such as brass or copper would work fine (and be cheaper) as well.
I used metal calipers to mark equal sections of the tube. I made sure the sections would be taller than the sides of the silicone mold. (More on that later.)
Cutting metal tube can be downright tedious. I like to use a tube cutter jig, available at home improvement stores, to help me make an even cut. Line up the score mark with the blade and twist to cut the metal.
The tube cutter is going to leave burs on the inside of the metal tube. You will need to sand them down with coarse-grit sandpaper.
I placed the cut tube sections inside the silicone mold cavities. No measurements here — I just eyeballed it.
Not shown: I prepped the mold with a light layer of the Ultralease mold release and allowed it to dry 30 minutes before placing the tubes.
I mixed up two batches of Resin Obsession super clear resin (15 ml each) and used Resin Obsession opaque color pigments in purple and magenta to color the resin. After mixing the resin, I decided to wait to pour it. I wanted the resin to be close to curing so that there would be less mixing between the two colors.
The first time I did this, I waited until 45 minutes after mixing (the super clear resin has a 25 minute pot time) to start pouring. That turned out to be the biggest resin mistake I can ever recall making. To say I had a sticky, gooey, taffy pulling, spider web looking resin mess is beyond an understatement. It was the consistency of bubble gum and pouring out in globs. The more I tried to work it, the worse it got. I would have loved to share pictures with you, but there was no way that I was going to touch my camera with that goop on my gloves (and resin table and mold and stir stix and … well you get the picture).
So, for the second time around, I mixed the resin and set a timer at the beginning of the mixing. At twenty minutes, I started pouring the resin into the mold.
This time, I fared much better with my resin charms. I poured the inside first. At this point, the resin was the consistency of syrup and was noticeably thicker than it normally is when it is first mixed.
I poured the pink resin next.
When the timer signaled 30 minutes after mixing, I started removing the tubes from the resin. The reason I cut the tubes taller than the cavities was that I knew the resin would be thick. I didn’t want to poke my tweezers into the resin to pull out the metal because it would likely introduce more bubbles. After pulling the tubes out, I threw them into a plastic cup filled with acetone. After soaking for 30 minutes, they were completely clean of resin.
On a side note, you can see the cavities where I have already pulled the tubes, there isn’t much purple color on top. I noticed as I was removing the tubes, the tube pulled the pink ‘over’ the purple. I wish I could explain exactly what happened. Note to self: I should have paid more attention in physics class.
I also had some pretty big bubbles to deal with. I was not able to pop them with my tweezers. The only way I could get these out was to go over them with my heat gun.
After demolding the resin charms 24 hours later, I was pleasantly surprised with the finished castings. I love the definition between the two colors! Maybe next time, I would try a smaller diameter tube knowing the color will spread out that much.
On a technical note, the backside of my castings still had cavities from the bubbles. Even though the bubbles popped by using the heat gun, the cavity remained. I can sand these down to make them flat.
Is making ombre resin charms something you would try?
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