It is great for trimming, but I could not justify the cost, so I used a 50% off coupon from JoAnns and bought the smaller one (not the really tiny ones) of Olfa and found a lazy susan for 90 cents at the thrift store--took the top off and cut a piece of plywood square and cut the matt and attached it to the top and the turner to the bottom. I just used lots of double stick taple. It works great for a fraction of the cost.

before you purchase a new top, see if you can reverse the one you have. The back side will not have the lines on it, but the surface should be usable for cutting...

I have 3, the 17, the 14, and the 8 inch, I believe it is, I love all of them, they each have there place. I purchased mine with coupons from JoAnns.

My niece bought one and she thought it was a waste of money. But I have not personally used one.

I love mine and use it most of the time Olfa is expensive but worth the price

My husband made a 18" square one for me that works great. Base is a turntable like you use in dish cabinet topped with a thin sheet of fiberboard and then a cutting mat.

Thank you for all for all of the feedback. I have also considered purchasing a revolving rotary cutting mat. So far increasing my stash always wins when deciding whether to buy one or not. I'll be keeping my eyes open for a lazy susan.

I have a 12" Olfa and love it. Someday I'd like to get the larger version. At one time I also did the lazy Susan trick. Had one that was past its prime and also had a cutting mat that had cracked. I cut the mat (square) and glued it to the lazy Susan. Worked fine. Good luck with whatever you decide, IMO you'll like using one.

It's an OLFA!

I have the 14' Olfa revolving rotary cutting mat! It's wonderful - especially when squaring up blocks, you no longer have to pick up the block and turn it to cut each side. I found mine on sale at a Corning outlet (go figure)!