Very easy paper cutting for K40. Very low power — stay near 10% to avoid scorching fine detail on intricate cuts.

White engrave on slate. Invert image. K40 gives usable results on stone at this setting. Wipe with damp cloth after.

K40 is hugely popular for stamp making. 500 DPI for fine detail. Invert design — dark file areas engrave deep. Great consistent results.

CO2 works beautifully on leather. 22% is a starting point — K40 tube output varies significantly. Always test on scrap.

K40 cuts 3mm acrylic cleanly. Remove protective film. Without air assist edges may have slight melt — polish with a heat gun if needed.

K40 without air assist on MDF — watch closely. Good ventilation is essential. MDF fumes are heavy and unpleasant.

K40 Z-travel is limited — ensure precise focus. 200mm/s fill engrave at 30% gives good contrast. A digital readout upgrade helps with repeatability.

K40 stock tube output varies widely — run a material test first. 55% is a mid-point; adjust for your tube age and condition. Stock bed has no air assist.

Excellent contrast on natural cork. Cork chars easily — keep power low. Great for wine corks and coasters. No air assist — cork is lightweight and porous.

Veg-tan leather engraves beautifully with CO2. Low power for surface mark. Higher power (25–30%) for deeper relief. Chrome-tanned leather produces toxic fumes — never use. CO2 gives superior leather results vs diode lasers.

Apply dish soap or wet newspaper over glass surface before engraving — reduces thermal shock and produces frosted white finish. Wipe clean after. K40 CO2 engraves glass beautifully at low power. Cannot cut glass.

MDF cuts consistently (no voids like plywood). 2 passes at moderate speed gives cleaner edge than 1 slow pass. Heavy fumes — ventilate well. Air assist critical. Stock K40 tube output varies; tune power up/down by 5% if edges are tacky or over-charred.

Clear acrylic cuts beautifully with CO2 — polished flame edge. Typical K40 setting: 5–7mm/s at 90% for 3mm clear in one pass. Remove masking immediately after cutting. Colored acrylic varies slightly — black needs a touch less, yellow/orange a touch more. Ventilate well.

Stock 40W K40. Single pass at moderate speed. Actual tube output varies (25–35W on budget units) — adjust power if edges are tacky. Air assist significantly improves cut quality and reduces char. Clean optics before long runs.

K40 stock settings. Raster engrave at 100mm/s, 10% power produces ~0.5mm engrave depth on softwoods. Harder woods may need slightly more power. Keep speed under 200mm/s to avoid banding or quality issues. CO2 laser — no wavelength restrictions on wood types.