Keeping your blade straight up against the ruler is necessary :wink: If your wrist/hand turns in/out you will get a wobble in your cut.
Try setting up your fabric and ruler so that you are cutting in a forward motion (the ruler is vertical to you)
I find sometimes that when I cut with my ruler horizontal to me, I can get wonkier cuts :wink: :D:D:D

All good suggestions so far. Take it slowly and it does take practice. I like the sandpaper dots for stability - I also found that I like cutting on my ironing board (big board) as the height is better.

Cheers, K

You can buy some Invisigrip to stick to your rulers. No more slippery rulers.
Also, try to position your hand on the ruler so that your pinky is just outside
the ruler. That keeps the ruler in place.

Good point - I've also seen the recommendation to use the narrowest ruler you can - so if you are measuring 2 inch strips, use a 2 -4 inch ruler, not a 12 inch ruler. The pinkie off the ruler does work - seems to stabilize it, so there isn't as much slippage.

Cheers, K

always have a sharp blade. roll the cutter along, you don't need a lot of pressure. actually, one layer is harder to cut because it can slip more easily. are you using the 45mm ruler?
the 60mm is great for several layers but harder to control with only two or one layer. always cut away from you. side cuts, horizontal cuts for the other side, etc. can get you in trouble--not just bad cuts, but dangerous. ruler size to suit cut size is an excellent suggestion. use a 12" long ruler whenever you can, not the 24". practice cutting 1 1/2" strips & then you can use them later on a strip quilt. won't matter if they are a little wonky. I will improve !

Ditto!

I find that my ruler tends to slip when I don't have good leverage. Standing over the ruler works best for me. I also do not try to do a full range cut in one motion. Instead, I firmly hold the lower half of the ruler and cut about half way, then I walk my fingers up to hold the upper half and cut the upper half. For really long cuts, I even distribute the weight into thirds.

When I need 4 strips @2.5" each, I cut one strip at 4x2.5=10" I trim the 10" in half and each 5" in half again. This seems to help with getting wonkier as I go.

I'd like to add:
1. Make sure you are cutting from a height that works for you. Sometimes people think they can accurately cut sitting down. I can't.

2. Use your ruler to measure and not your mat. Mats are rarely accurate.

3. Always use the same ruler (or at least brands) for your cutting. There are differences.

4. Don't use those clear silicon dot things to stick on the bottom of the ruler. You just end up with wonky cuts from where the fabric stretches around those (ask me how I know). Sandpaper is a better option.

I'm sure other people have some more advice as well.

the best remedy i have found is the j t shape & cut ,worth it's weight in gold to mefor the diff.it's made
dar

I agree with all of the great advice that you have been given. The one thing that I found is that I have to stand for all cuts!