1.25" Cheshire crosshair insert

The cheshire collimation eyepiece by fortinmike works quite well, but for a noob like me, a crosshair in the eyepiece would have been nice as well. Since I did not want to reprint an eyepiece, I just modeled a crosshair that fits on the inside of the eyepiece with a friction fit. I tested it and was able to get better collimation now