If you buy something from a link in this article, we may earn a commission. Learn more REVIEW – I previously reviewed Longer’s 30W B1 with air assist (read it here) and have loved it since. The combination of raw power, ultra-fast cutting, and air assist made it the go-to machine for engraving and cutting. … Continue reading Longer B1 40W Laser Engraver with Air Assist review – Serious engraving and cutting power isn’t a toy.