SueZQ from MN

For years I have used a 45mm rotary cutter and wondered what the numbers on the blade are for, or how they are to be used, but never asked anyone. Is this a stupid question that I should already know the answer to?

AprilM

Well, if its a stupid question then im right there with ya cuz i didnt even know there were any numbers!

ILoveToQuilt

The original rotary blade was designed to fit a safety cutter that positioned each section of the rotary blade in a fixed position to be used upon the dulling of the previous section. The numbers represented each of those sections. When OLFA introduced the original rotary cutter in 1979, the numbers became irrelevant, but have been maintained as a sort of historical feature representing the original rotary blade.

Jingle

I don't think my Fiskar blades have numbers. With the number of blades I use I should buy stock in the company.

AprilM

Thanks, Anita - thats good info! You know the Olfa Chenille cutter has a dial with numbers on it so that you can click ahead to a different place on the blade when it get dull so the cutter must be based on the original idea you told us about.

SueZQ from MN

Thank you so much ILoveToQuilt. You have taught this baby boomer something new today and it's information that I don't have to learn to use. Whoopee!!! I love this board and all of the knowledgeable and helpful members that are here.

Rhonda K

Thanks for asking!

I saw numbers on them yesterday and wondered why they were on them. Now I know, thanks!

luvstoquilt

Now we know! I have wondered.

lindaschipper

I had always assumed they were "batch" numbers.

ILoveToQuilt

Don't thank me, thank Mr. Google! LOL