Hey Guys! I've been getting quite efficient with my speedy 400 over the past couple months but I have had continued issues with cut settings. The material I am having trouble with is 6mm (1/4") blatic birch ply. As a point of reference, I also have a 50 watt epilog which cuts this material with ease. My speedy 400 has an 80 watt tube, so significantly higher wattage than the epilog and I am struggling to have consistent full "blow through" cuts. what's odd, is I have noticed that settings my z-offset to about a 1/16th or 1/8th" in the negative direction when cutting (closer to the lens) it will cut through the material much easier and have a much finer stroke and cleaner cut. This seem illogical to me because it is essentially taking the laser out of focus. It almost seems like when I'm focusing using the focus tool that the lens is too far or out of focus from the material.
These are the settings I'm using on baltic: 100 power/ .4 speed (which seems too slow for this material)/1500 hz. I clean the main lens and mirror daily. I'm using the stock 2" lens. Any ideas would help, I'm sure I'll get to the bottom of it, but I'm crowdsource brainstorming
Some possible scenarios I have thought:
1: they sent me a 1.5" lens instead of a 2" lens, but I have no idea how to test, lens carrier is black like it should be for the 2"
2: faulty lens, again I'm not sure how to test