Chinese Laser Air Assist (Poor Mans)

My daughter bought the 'ol Ebay Chinese 40W Laser engraver/cutter. Not bad for the price. Anyway it has no air assist and I didn't want to get the full air compressor, curly hose, etc. So I decided to try a little fan mounting on the head. I tried a few designs with different fan orientations. This one (the third) is the best as the fan doesn't interfere with the range of motion. Early trials are that it's worthwhile. The difference in smoke / flame marks cutting or engraving wood and car