"Andy Dingley" wrote in message
...
On 31 July, 12:21, "Dave Plowman (News)" wrote:

It's a bit of a fine line between blades which are hard enough for a long
life and don't break too easily.

That "fine line" is an e-beam weld. There's no point in using any
hacksaw blade these days exccept bimetal ones, and all-hard for some
accurate bench work (You still need three+ blades to spread the tooth
sizes, and you might as well do that in three dedicated frames).

There are probably expensive ones with
different steel etc for the teeth and blade.

Except that they're cheap, and about 30 years old. I used to take my
own one in to school metalwork lessons, which was O levels back then,
so it was a fair while ago.

My Pound Shop hacksaw has teeth with a very strange shape - difficult to
tell which way they are pointing - and the pins are tool big for the slots.