square filing

Hi there everyone - I’ve been selling these on eBay for a while now, and thought I’d give you all an opportunity to purchase at a little bit better rate than they’re listed for - eBay fees can be a killer… Orders of 6 or less, $6 shipping to lower 48 states. Orders of 7 or more, free shipping...

im looking into square filing chain, how much better/worse is it? I know its a little harder to learn but seems to have nicer results I saw inbred jed using a regular old triangle file, and others using some weird mix between a flat and triangle file, does it really matter what file I use...