Hello all! I searched a bit and I am sure this has been discussed however: I noticed the side having a lot of angular slices ‘chips’ that looked like laser bounceback or sorta hourglassing (PF Thick acrylic w/ stock settings). This is with proof grade acrylic. I noticed the focus height of the material set to 6mm or what not… I measured with my calipers (two pairs) and got 5.85. I figure some of that is the covering, right? Needless to say the side imperfections went away when I matched what I measured.
Is this just a QC thing? Am I missing something or were sacrifices made for other cut variables going smoothly when they narrowed it down to 6mm focus height.
Thanks in advance! I was trying to get some photos but I’m lazy and did not setup my microscope since I loaned it to another Makerspace. I know pics say a thousand words but I think we have all seen the stripes down the side of cuts like the laser is suddenly boosting power and extra material is lost or it bounces back… I don’t mean ONE where it starts and or stops I mean many scattered around the cut length. Just wanted to make sure GF is aware / known and it is just part of my own ignorance as to why.
Also: I was wondering if as the laser strikes the material the ‘extra’ thickness if measured in for this is thrown off by neighboring vaporization of the covering before the beam advances? Just spitballing.