Im asking because i use 2/0 and i keep broken many of then sadly.. maybe is my poorly skills lol 😂 let me know wich size of saw blade you use and wich brand . Thank for help guys.
Im asking because i use 2/0 and i keep broken many of then sadly.. maybe is my poorly skills lol 😂 let me know wich size of saw blade you use and wich brand . Thank for help guys.
Hi Richard,
The correct answer is that when piercing sheet metal, three teeth of the blade should be in contact with metal at any time. This means roughly that above 1.0mm 2/0 blades are OK. For 0.9mm, you go to 3/0, for 0.7mm and below 4/0.
The brand leaders are Vallorbe and Bergeon, both Swiss.
If you are breaking high quality brands, then you are pressing too hard, or your blade tension is too great. You should only press hard enough to keep in contact with the metal, a feather light touch. The tension should elicit a musical note when plucked, not a twang and not a very high note. As the day advances, fatigue causes lack of concentration and control.
Lastly the back of the blade should be lubricated. A piece of candle, or a tea light will do, rubbed along the back quite frequently. This avoids too much wax being shed and obscuring the scribed marks. Dennis.
Mostly I use 2/0 & 4/0. Even on 5mm steel. The 3 teeth rule is a minimum.
Tension I usually go for something approaching an E string on a violin (but it depends on the thickness of the blade - coarser blade, lower tone).
Anyone have a way of remembering which size blade you have in your saw. See a lot of posts about storing saw blades and not getting them mixed up so I'm careful to keep them organised. But i forget what size blade I've put in the saw.
Ps for sawing you need to keep your grip loose on the saw handle. One teacher was using the idea that it is a hamster so don't squeeze the life out of the poor thing!
Last edited by Sheen; 15-06-2020 at 07:54 AM.
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