As far as deep metal marking with a laser goes, power is everything. If you don’t have a high enough power level from your laser, your machine will not be able to engrave things deep enough. It also might wear out or break down faster than usual, because the demands placed on the laser are too high for it to sustain.
For this part of the strategy, it all comes down to how deep you want your markings to be. If you are only looking to create permanent marks that will last a long time, a 20W or 30W machine should work fine for you. However, you might have special requirements for your engraving depth that are deeper than average. If so, you’re much better off going with a fiber laser that can operate at 50W or 60W.
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