It does make sense. I will have to watch for this.

I have no guilt when replacing my quilting tools. I have a bin full of old rulers that I waver on taking to guild free table. They are old and used so do I want a new quilter to try to use them? None of the long time members will take old used rulers.

If they are still straight - I would donate them.

If they are curved - a newbie would not think to check for that - and I would hate to add to a beginner's frustration.

I totally understand about the rulers.
FYI: At our Sew day on Friday one of the girls was talking about the Accu-cut go??? Don't have one, may have used wrong name. She explained to be careful when cutting layers of strips because they will stretch and then be too short to use. The roller does the stretching. One layer cuts fine.

I discovered this with my rulers pretty much the same way you did. Strips are not straight. But if we all cut & sew like maniacs, we need to keep our tools up to date too. GOOD REMINDER.

LOL Good reminder!! Going to check mine now :)

I've had the Go for years. It's as important to me as my sewing machine. Like any other machine, there is a proper way to use it. It's the grain line that determines if the fabric stretches not how many layers. Always cut lengthwise grain.

This makes me think I should check my main rulers. They're about 4 years old now and have had a lot of use - entirely possible they're getting a little worn!

I tend to cut "in the middle" of my rulers, rather than starting at an end - which may explain why they wore down more there than at the ends. :shock:

I think I noticed the most "wear" on the Quilter's Rule rulers- the ones with the big, thick ridges on the bottom.

Those were the first rulers I bought when I started quilting. Compared to the new ones now, they are awful. The lines are too wide. Right down the middle of the marked line is the true measurement. No wonder my first quilt blocks were so bad!