Laser Engraving--How to Get Rid of the Burn Marks

The laser beam leaves a blackened edge when it cuts leather. How can you clean up the edges without leaving a mark? This article presents three ways to clean up the edges, including a quick fix with everyday tools and a professional solution. It also provides tips on how to adjust the laser settings and how to take care of leather to make the finished product cleaner and more attractive.

Why does leather darken after being carved?

Many people who use lasers to engrave leather discover that the edges of the engraving tend to turn black.This is actually caused by the laser's high temperature carbonizing the surface fibers of the leather, just as the surface of bread turns brown when it is baked.This is especially true when cutting dark patterns or using high power parameters.

Emergency measures: Tools for getting rid of black.

The eraser method.

Use a drawing eraser to gently rub away the darkened areas following the grain of the leather.This method is especially suited for the shallow carbonized marks left by a new carving. The pressure must be carefully controlled when rubbing, or the surface of the leather will be scratched.

Cleansing cotton + lotion.

Use a non-alcoholic lotion to dampen a cotton swab and gently rub the stain in a circular motion.The oil in the cream softens the carbonized substance, so be sure to wipe off any excess with a dry cloth to prevent the leather from absorbing the moisture and deforming.

Professional solutions.

Special leather cleaner.

The stain remover available at hardware stores works best when used with a soft-bristled toothbrush.After applying the paste, gently brush it into the carvings, and repeat the process two or three times if there are stubborn stains.

Parameter optimization.

Before carving, he tests various power settings on scraps of wood to find parameters that allow him to carve clear lines without scorching the wood.Generally speaking, reducing the power output to 70 % of the standard value and increasing the cutting speed can effectively reduce blackening.

Tips for daily maintenance.

After you have dealt with the black marks, it is recommended that you use a leather care oil to maintain the leather. This will not only restore the shine, but it will also form a protective layer.When storing the pieces, it is important to keep them away from dampness. The best way to keep them is in acid-free paper, which will preserve the leather in the best possible condition.