One of my favorite kit items, the ' saw in a can ' was first put to use on a fallen Eucalyptus ( gumtree for our OZ members) on the freeway in Santa Barbara. We ( myself and the CHiP officer on scene) were amazed how relatively fast this small tool removed a major hazard. I recently acquired a second unit, and looking it over decided to experiment. There a 63 links, with each tooth roughly edged from stamping. This is the first saw pattern, and served the world well since the romans first large scale engineering projects. later saw patterns differ primarily in the addition of 'rakers.' These are in fact wood chisels. The teeth cut wood fibers and rakers physically break them out of the channel. I improved my saw by SLOWLY resharpening alternate links with a 3 faced file. I then filed the outer edges of the second series near verticle and with a punch and hammer effected a small curve to create rakers. The already impressive performance was markedly improved. I also dipped the ring handles in bright yellow handle paint, that rubbery product that improves comfort and visibility. A final dressing of oil and I was set. The tough paint has never alowed any rusting, but like epoxy coated knives can impair optimum cutting. Performance in softwoods has improved, though I probably spent as much time retouching the saw as any potential savings <img src="/images/graemlins/confused.gif" alt="" />