Hi, i'm completely new to the forum/ laser cutting thing so i'm sorry if i actually know very little. We recently got a LC1390 with a 150W tube, and after aligning the mirrors, and all the stuff you are supposed to do (also the platform was unleveled, we worked that out). So, everything seems to be in order but we have been cutting just circles and squares, and all of them come with imperfections on the edges. Basicaly all of them are not 100% straight, with no apparent pattern. The pictures can show that. This is 15mm MDF.
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What should i do / check for?
Thank you all in advance