i bought a air hacksaw from machine mart, but the blades supplied wore down
after 6inches of cutting. anyone know where i can buy better quality ones?

Steve

"r.p.mcmurphy" wrote in message
...
i bought a air hacksaw from machine mart, but the blades supplied
wore down
after 6inches of cutting. anyone know where i can buy better
quality ones?


Well 'we' use normal hacksaw blades, cut to length (and trimmed if
needs be) - and we use a lot of them whilst cutting car body work
about....

Just make sure that you get the teeth facing the correct direction,
cuts on the pull stroke rather than on the push stroke as with hand
tools.

":::Jerry::::" wrote in message
eenews.net...

"r.p.mcmurphy" wrote in message
...
i bought a air hacksaw from machine mart, but the blades supplied
wore down
after 6inches of cutting. anyone know where i can buy better
quality ones?


Well 'we' use normal hacksaw blades, cut to length (and trimmed if
needs be) - and we use a lot of them whilst cutting car body work
about....

Just make sure that you get the teeth facing the correct direction,
cuts on the pull stroke rather than on the push stroke as with hand
tools.


that sounds a good idea! how many teeth per inch do i need for cutting 16
gauge chassis steel?

Steve

r.p.mcmurphy wrote :-

that sounds a good idea! how many teeth per inch do i need for cutting 16
gauge chassis steel?


As fine a you can get ( cuts down vibration ) we use 26 tpi at work for
general cutting but for thin sheet finer would be better

Regards Jeff

On Wed, 20 Apr 2005 08:33:22 +0100, "r.p.mcmurphy"
wrote:

i bought a air hacksaw from machine mart, but the blades supplied wore down
after 6inches of cutting. anyone know where i can buy better quality ones?

Sandvik or Bahco (Axminster sell them), and definitely get the bi-metal
welded ones. These have hard HSS teeth, but aren't brittle at the back.

For twenty years I swore by Eclipse bi-metal blades, but these seem to
be of poor quality recently.

Teeth are usually advised to be fine enough to get three teeth into the
metal simultaneously, but this is unachievable for sheetmetal (you'd
need 48tpi here, although16 gauge is thin for a chassis) With a powered
saw and a light initial feed, you can go coarser than this, I'd probably
use 24 tpi, but it's always worth having a selection of hacksaw blades
in the toolbag. In the workshop, I keep separate frames with each blade
permanently in them.

"Jeff" wrote in message
.. .

r.p.mcmurphy wrote :-

that sounds a good idea! how many teeth per inch do i need for cutting
16
gauge chassis steel?


As fine a you can get ( cuts down vibration ) we use 26 tpi at work for
general cutting but for thin sheet finer would be better

actually its 24 tpi we use, special short ones with hole at one end only for
a cengar saw, sandvic - for your application I would use 32 tpi

http://www.lawson-his.co.uk/scripts/...cksaw%20Blades

Regards Jeff

or here :-

http://webserver.diygear.com/acatalo...tal_515 .html

Regards Jeff

bought some blades....hows the best way to cut em to size?

steve

"r.p.mcmurphy" wrote in message
...
bought some blades....hows the best way to cut em to size?


How do you normally cut sheet metal ?...

I use my teeth but most use metal shears ! :~)

":::Jerry::::" wrote in message
eenews.net...

"r.p.mcmurphy" wrote in message
...
bought some blades....hows the best way to cut em to size?


How do you normally cut sheet metal ?...

I use my teeth but most use metal shears ! :~)


i tried using tin snips and it just shattered the blade! i think i will use
the dremel!

Steve

"r.p.mcmurphy" wrote in message
...

snip

i tried using tin snips and it just shattered the blade! i think i
will use
the dremel!


Bought the wrong blades then, you want the ones that are more
flexible, hardened only along the teeth...

Also, cut from the non teeth side.

":::Jerry::::" wrote in message
eenews.net...

"r.p.mcmurphy" wrote in message
...

snip

i tried using tin snips and it just shattered the blade! i think i
will use
the dremel!


Bought the wrong blades then, you want the ones that are more
flexible, hardened only along the teeth...

Also, cut from the non teeth side.

could you name a brand that you use? Also i did cut from the non teeth side
but it just shattered.

Ta

Steve

In article ,
"r.p.mcmurphy" says...
snip
could you name a brand that you use? Also i did cut from the non teeth side
but it just shattered.

You need bi-metal blades like these
http://www.screwfix.com/app/sfd/cat/...11462&ts=39810

:::Jerry:::: wrote:

"r.p.mcmurphy" wrote in message
...
bought some blades....hows the best way to cut em to size?


How do you normally cut sheet metal ?...

I use my teeth but most use metal shears ! :~)

Well that *shouldn't* work on hacksaw blades unless they're too soft
to be hacksaw blades surely.

--
Chris Green