The need to be well-aligned which is easy enough using a pair of tripods. Check out the demo after the break. Looking for something to do with the leftover laser diodes from this project?

[Dirk] shared a fascinating project of his that consists of several ... It’s all about wanting to do target practice, indoors, using a simple red laser dot instead of any sort of projectile.

Best laser levels to make home DIY tasks simple, tried and tested - Adding fresh accuracy to his otherwise dodgy DIY, Stuart Pritchard gets his life in line with the latest laser levels ...