Aluminum is usually difficult to cut cleanly on a fiber laser. Anything above 1/8" can usually be expected to have consistent burr along the entire cut edge. Thick aluminum plate cut on a fiber laser will have an edge burr up to 1/4" in length.

We've used the latest cutting technology to almost completely eliminate cutting burr on aluminum up to 1" thick. Even in 1" aluminum plate, the amount of burr is lower than a fiber laser would ordinarily leave on 1/4" plate.