Need to project a 4" circle around a bandsaw blade.

[mpt]

Looking for a laser to project a 4" circle around a bandsaw blade to warn the saw user their hand is too close to the blade. I can mount @ 22"s or 45"s. Any help would be appreciated.

 

[Pi R Squared]

Have a look here at AixiZ: www.aixiz.net one of their cheap modules that run on 3.2V may be what you need, or any laser with an AixiZ type module and the standard 3 element or single element lens could work, and you can add one of these to it: Circle lens kit for 12x30mm AixiZ modules, AixiZ I haven't tried one of these myself so I don't know but it looks to me like what your looking for. I and many others here buy stuff from them, they are one of our main sources of laser parts.

Alan

 

[mpt]

Thanks Pi R, I hope you know anything you said is over my head. I'll look at the sites and try to figure it out.

 

[Teej]

Where to mount it so its not in the way for blade changes/use, and still put the circle around the blade....without the blade casting a shadow in the pattern, may be a little tricky.

 

[mpt]

Teej, The 2 spots picked are out of the way for blade changes and sample manipulation. We don't need the full 360 deg image because of a plate that's usually on one side. My big concern is getting a 4" circle from the said spots since there's no adjustment of the image size.