Tom Walz
09-10-2010, 1:29 PM
There is a discussion under way on this here. Some 10” saws are made undersize so they can also be sold as metric saws.
There is also a discussion in the professional saw sharpeners web site about tolerances for manufacturing blades.
This can be a real problem for sharpeners because it is hard to restore a saw to like new condition if you don’t know what that condition was. In many cases the sharpener uses tighter tolerances and makes the saw better than new.
Quite often a sharpener has a heavily worn saw and can’t determine and restore the original angles.
So my question is what size should a 10” saw blade be and how tight should the tolerance be. We track total runout and find big box blades to have 0.004” at the best with 0.006” common and some much worse. 0.003” total runout seems to be about the best achievable in 10” blades.
How much should thickness vary from blade to blade and how much variation should there be in the width of the tips and the length of the tips.
Since there isn’t any standard now I guess whatever you guys come up with will be a new industry standard.
Thanks,
There is also a discussion in the professional saw sharpeners web site about tolerances for manufacturing blades.
This can be a real problem for sharpeners because it is hard to restore a saw to like new condition if you don’t know what that condition was. In many cases the sharpener uses tighter tolerances and makes the saw better than new.
Quite often a sharpener has a heavily worn saw and can’t determine and restore the original angles.
So my question is what size should a 10” saw blade be and how tight should the tolerance be. We track total runout and find big box blades to have 0.004” at the best with 0.006” common and some much worse. 0.003” total runout seems to be about the best achievable in 10” blades.
How much should thickness vary from blade to blade and how much variation should there be in the width of the tips and the length of the tips.
Since there isn’t any standard now I guess whatever you guys come up with will be a new industry standard.
Thanks,