It takes 27 seconds to engrave "MFG NFA TRUST, SPRINGFIELD OR" - why in the world would I do that on my CO2?
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That's why I have a Galvo style fiber now being built, For my 30w Epilog Gantry style Fiber, assuming the regulation minimum of 1/16 height, a typical NFA engraving takes 5-10 minutes to reach .003 depth. Thats with 5-10 45 degree passes (double that in reality) with crosshashing and another 5 passes of raster cleanup. I can cut that time in half if using single line text.
The machine was new on the market & to be honest, I was sold a bill of goods on it's capabilities. The Dual Co2/Fiber does have it's pluses. Just finished a massive military order. Could place 6 pieces on the 32x20 bed. Pass #1 was a CO2 marking (lasered through powder coat) for each piece. Pass #2 was a deep Fiber etch on another area of each piece. The ability to do larger quantities and both types of lasering was perfect. I have also done a few large metal pieces that would not work with the smaller Galvo work space.