i'm not 100% sure about martelli ... although i can't see why not ... but it will work with any other brand of cutter or blade, for sure.

i followed the suggestion to maintain a good blade vs. trying to bring a dull one back from the dead. it makes a huge difference, so thanks very much for that tip.

i also flipped the blade, sharpened the other side, and sprayed it with a shot of silicon. (some people use oil)

if i hadn't known better i'd have thought it was a brand new blade straight out of the package. :-)

I bought mine from ebay. Nancy's Notions is cheaper but they are out of stock until August 31 and I didn't want to wait that long.

I ordered one on Amazon which should come sooner than from Nancy's Notions. Total cost with shipping just a few dollars more than Nancy's total cost.