I've been looking at cannon fuse too. Ebay has green 20 sec/ft in 2mm dia which would fit into more motors. 3mm stuff is available at 9 sec/ft, 4 sec/ft, and even one named "quick fuse" that claims 0.5 sec/ft. I don't know how anything about the brands and quality, and the 3mm won't fit all the way into some 18mm motors.

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I love sanding.