Bests & Worsts Reviews from Amazon

New to cutting bottles into glasses, I watched a handful of YouTube videos. This product seemed to appear user friendly. Operative word is "appear". The first issue was that after two attempts at scoring the bottle, the guide that goes into the top cracked to the point it was no longer effective. (nothing a band-aid of duct tape couldn't handle though). The second short coming is the hardware used to secure the vertical and horizontal parts of the jig. Because wine bottles have a varied design you will need to reset the jig in order to achieve a uniform glass height. The tiny wing nuts are "ok" but you will need a screwdriver to hold the head of the screw while you tighten the wingnuts. Not a big deal except the hardware is cheap so after a few adjustments the head of the screw is starting to round out. A better design would have been a stud or a nutplate. This would have made it less cumbersome to adjust and would allow you to tighten to ensure the jig doesn't move while scoring. After a long "trial and error" period I have been able to use the jig as it is marketed. It's not quick to adjust and gets the "pain in the butt" stamp. Aside from making your own jig I didn't see anything else out there. One more thing, I didn't have any success with the hot water cold water technique to seperate the bottle. I did however purchase a bernzomatic hand held torch which has been 100% effective at ensuring enough heat is dispersed along the score line. I would only recommend this item after you have exhausted your search for better. Good luck!