We use affiliate links. If you buy something through the links on this page, we may earn a commission at no cost to you. 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 … Continue reading Longer B1 40W Laser Engraver with Air Assist review – Serious engraving and cutting power isn’t a toy.