I FINALLY got my blades about 10 days ago. They seem to get dull pretty fast. Work great at first. Has anyone else noticed this?

What size does Harbor Freight sale????

45mm

I ruined mine with the cutting edge ruler! I love mine I have not seen a decrease sharpness in usage.

My DH & I are very pleased with ours! I have had one blade in for the past two quilts and DH used it to cut felt for his wooden gifts & remarked how amazingly it was still very sharp! Normally I'd be on my 3rd Olfa blade by now.

I have found that it depends on the blade and your Mat... I have an old Olfa mat (10 plus years) that a couple almost instantly got a nick in from this mat. But, the same thing happened after a fashion with the more expensive blades so I figure at a dollar a blade I can toss some sooner than others. When they were 5 bucks a piece that ticked me off more...

I stop at the local HF when I pass and pick up a few packs everytime. Yesterday I picked up 5 packs, and yes I left some for other quilters.....

Thanks for reminding me.Going to pick up more tomorrow.