Guys, I can't seem to collimate this laser collimator!!
I know how to play with the screws etc... but when I turn it in a circle, it's not pointing at the same point. It's making circles, ellipses etc... And I don't know how to work towards making the circles smaller... Get what I mean?
My process is, I have a V cut into 2 bits of wood (thanks to Phil), these are held in place, and the collimator lies in the Vs, pointing at a wall. I turn on the collimator and mark on the wall, a cross where the laser is. Then, I turn the laser in the Vs (vice I guess), and if the laser stays in the same point on the wall, I'm collimated!! But this never happens. I'm always makin circles or ellipses. Sometimes I'll adjust the screws, and the circles get smaller (yay), but I'll adjust them again, and they'll get bigger (Noooo!!).
Any advice?
Thanks!!