I used it on the drop ceiling tiles and helped make a perfect circle (on both sides, exactly same).Would recommend to a DIYer.
I love this thing. Perfect cuts every time. I wish I had it years ago. I used to use my rotary tool to cut the holes but it never cut as perfect as this. It will only cut the paper but that's what you want. Use a drywall saw to finish the job.
I used this to install recessed lighting in my home office with a drop ceiling. The Drywall Circle Cutter went through the ceiling tiles like butter. This is a quick and useful tool that makes good cuts and scoring. I'm very happy with my purchase.
If you're looking for a nice clean way to cut a circle i drywall. Very well made and definitely a must for drywallers in construction.