18k gold findings attachment.. When using the laser to attach 18k gold finding bases or closing the gold pins on a jewelry piece, it can leave a scorch mark or fire oxidation on the piece and it can be hard to remove. A good tip to avoid this issue would be to place the findings in a mixture of boric acid powder and alcohol. This solution will coat the 18k gold jewelry in boric powder, giving it a nice protective layer from oxidation. It is a simple solution to make and can be stored for multiple uses. The mixture is highly flammable, so be sure to store the mixture away from any flames. We like using a glass jar - with a lid so it can be sealed and stored away after use - mix a couple of tablespoons of boric acid power with a quarter cup of denatured alcohol and stir. The powder doesn't completely dissolve with the alcohol as they will separate when left untouched. The mixture will look muddy (as seen in the picture below) but remember to stir prior to each use to combine the components. [caption id="attachment_522" align="alignnone" width="150"]
Boric acid powder + Denatured alcohol mixture[/caption] To create the coating on your 18k gold jewelry finding, dip your item into the stirred mixture and swirl it a few times. 
Taking the item out of the mixture, place it on your brazing area, light it on fire to burn off the alcohol. The powder settles quickly. This will create a green flame as the alcohol is being burned off. A good practice, Keep in mind the heat and alcohol tolerance of each gem stone in your piece so there are no unexpected consequences, while you are using this solution. [caption id="attachment_525" align="alignnone" width="225"]
Legacy Findings 1350 18k gold Lever Back[/caption] After the alcohol has been burned off, left behind on the item will be the boric acid powder. The powder will protect the 18k gold from oxidation which can be hard to remove. If there isn't an even coating on your finding, you can simply re-dip and ignite the piece again. [caption id="attachment_524" align="alignnone" width="225"]
The white powder on the item is the boric acid powder left behind after burning the alcohol.[/caption] Lastly, remove the powder by washing it with water or using Pickle solution. A simple mixture can help keep your 18k gold jewelry pieces scorched-free in your manufacturing process!