Irwin’s laser retro-fit for miter saws has been quite popular, and now they’ve expanded the line to include abrasive chop saws as well. It’s really simple: Just bolt this on along with the blade on your older non-laser-equipped chop saw and you’ve joined the 21st century.
The laser automatically turns on and off with blade rotation. It also ships with batteries and adaptors for most saws. Irwin claims the batteries’ll last about 1.5 hours — or about 5,000 cuts. They say you’ll get more like 3,000 hours out of the laser itself.
Street pricing starts around $20, and you can find this in most big-box retailers or online.