Don't use strong lasers without this - easy to make!

If you use high-powered lasers it is not necessarily enough to use safety goggles. Especially Class IV lasers need some extra attention: a beam dump to stop the beam and the reflections from the laser dot. In this video I show you how to make one and I test it using lasers up to 1500 mW. An easy and inexpensive build that will be a major safety upgrade for your laser collection.