My older machines (2 Singers) are wonderful for using those Refrigerator Business cards (magnetic), that I use for perfect 1/4" seams. Pop them on, pop them off... use for other seams too. Easy and accurate, no residue to worry about either. Can be used on older machines that are not electronic This is what is easiest for me.

Great tip. Hand not thought of this. Thanks for sharing.

Great idea. Everyone has a bunch of those on their fridge.

Wonderful! Thanks for sharing with us!

Great idea! I never even thought about that! I have quite a few.

Thank you.

This is a wonderful tip. Thank you so much.

Anybody know for sure they would be unsafe for modern machines? I'm not sure how powerful the magnet is and if it would do any harm attached to the throat plate.

Great tip. Thanks for sharing!!

Thanks for the tip...Great idea!

What a great tip! Thanks for sharing!