Dry the ring thoroughly before moving on. Avoid using cleaners with bleach, acetone or chlorine, as these can damage a ring’s metal band. [1] X Research source
You can use a wet paper towel to clean any silicone that gets on the outside of the ring.
If you need to remove the silicone, you simply need to scratch at it with your fingernail.
A ring mandrel is a graduated metal cone, which is used to size rings. You can easily obtain them from general online retailers.
If you have access to it, use a vice to secure the mandrel. This will make this step much easier. If you only have access to a carpenter’s hammer, you should cover the ring with a soft cloth to prevent damage to the band.
If the ring is stuck, you can strike upwards with the mallet to dislodge it.
You can use a nail buffer to smooth the edges after filing them down.
If the ring is still too tight, remove it and widen it further with pliers.
Try on the ring after closing the gap. If it’s still too loose, file the cut ends a bit more and try the ring on again.
Alternatively, you can use a propane torch and jeweller’s solder to close the ring into a single loop.