Science Says: False.
The hardness of a material is measured on the Mohs scale, with 1 being the softest (talc) and 10 being the hardest (diamond). Sharpie markers typically contain pigments, resins, and solvents, all of which are much softer than metal. Glue sticks contain polymers and water, which are also softer than metal. Therefore, drawing on metal with a Sharpie or applying a glue stick will not soften it enough to make it easier to cut.
In fact, drawing on metal with a Sharpie or applying a glue stick can actually make it more difficult to cut. The marks from the Sharpie or the glue stick can interfere with the cutting process, causing the blade to slip or become stuck. Additionally, the solvents in a Sharpie marker can damage the coating on the metal, making it more susceptible to corrosion.
If you need to cut metal, it is best to use a cutting tool that is specifically designed for the job. This could include a hacksaw, a jigsaw, or an angle grinder.
