Change if you find in appropriate (keep in mind these are with a clean lens, dirty lens = requires more power, make sure the lens is clean first before changing these)
Here are some examples using the rotary attachment on a glass bottle. Scan gap was set to 0.055 for all of these (level recommended by Rabbit). We decided that (for this particular type of glass), a speed of 350 with a power of 18 looked best. Higher power levels increase the "fuzziness" of the graphic.
More on what you can and cannot cut
Linear: Y same as X
From wikipedia: Pulsed lasercutting acrylic introduces a high internal stresses along the cut edge, which when exposed to solvents produces undesirable "stress-crazing" at the cut edge and several millimetres deep. Annealing the PMMA sheet/parts is therefore an obligatory post-processing step when intending to chemically bond lasercut parts together. This involves heating the parts in an air circulating oven from room temperature up to 90 degrees C (at a rate of no more than 18 degrees per hour) down to room temperature (at a rate of no more than 12 degrees per hour). Temperature should be maintained as follows: One hour for 3mm thickness, two hours for up to 6mm thickness, four hours for up to 12mm thickness, and six hours for up to 20mm thickness. A rapid annealing cycle is reliable for thin sheets and involves placing them in a pre-heated oven to 80 degrees C for one hour, then removing parts from oven and allowing to cool to room temperature. .