Hi David,
... it's mostly for testing ... and for fun too
The marking+cutting of the "Vitruvian man" needs some minutes per tag - with the 20Watt-laser more (more "cuts" needed), with the 60Watt-laser less ...
... have enough of the 25W-diodes and even some with 30 Watts, so not meant to replace the fiber ... but could be different in future, so stored it away ...So do you plan on repairing the fiber or is it cheaper to replace the unit?
... tanks! - will tinkering and "playing" with all sorts of lasers (and other tools) for some more time -- it's half/half hobby and job-relatedKeep up the great work!
Viktor