If you use your 45mm cutter and can't get the corners cut without going too far, stop just short of the corner. Then, use your scissors to snip just the corners.

I don't know what a Twister tool is. Can someone explain? Thanks

Google it - you will see lots of images...here's one website for your reference

http://country-schoolhouse.com/twister_tool.htm

The method that works for me is to cut 2 or 3 of the sides then use another ruler, butt it up against the twister and pull the twister away and cut against the side of the 2nd ruler. I'm sorry if I make it sound complicated or labor intensive: it really isn't. I find it inconvenient to walk around the table- I'm just klutzy and find I mess it up more but that's just me. I also have the Nancy's Notions twister tool and really like that. Good luck. Don't give up. The twister looks so complicated to non quilters but we know different! Let us know how you're doing.

Wow.. looks like soo much trouble after reading all these comments.. lol..
Ill have to dig mine out .. Ill be using the revolving cutting mat so hopefully all the above wont be an issue.
Thanks for the heads up. .

I have two revolving cutting mats but they aren't that big--they would not turn an entire wall hanging in order to cut each square. I have only used the small twister. I use a 45 rotary cutter but the next time I believe I will draw around each block and use scissors to cut them. I have one block that I cut into the seam and am not happy with that.

I use a turning mat, the 28 mm cutter and I removed the feet and put on a flatter feet (Tru Grips by the Grace Co.) works so much better and the material doesn't move. Good luck. The Twister is awesome.