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#13604 - 05/18/14 12:49 PM Metal-cutting
Tor Magnussen Offline
New in town
Registered: 03/11/14
Posts: 3
Loc: Norway
I need to cut some metal parts for my projects.

Can I normally make it with at circular saw, go is it best with at cold saw?

Some suggestions?
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#13606 - 05/18/14 02:09 PM Re: Metal-cutting [Re: Tor Magnussen]
bunkclimber Offline
MBN Old hand
Registered: 02/14/10
Posts: 1101
Loc: Maryland *****
what type of metal are you cutting? aluminum can be cut with a circular saw and carbide blade..steel is often cut with a torch or saw..lots of folks have a recip saw,commonly known here as a 'saw-zall' you can change the blade in a quick second or two and it cuts ANYTHING with the right blade. A cold saw is a nice piece of kit of you can afford one..clean cuts with little or no deburring of material-ready to weld
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#13607 - 05/18/14 03:07 PM Re: Metal-cutting [Re: bunkclimber]
Doc Offline
MBN Old hand
Registered: 02/12/10
Posts: 1179
Loc: Beryl Jnct. SW Utah, Mdl Nowhe... ***
Also... HOW MUCH metal do you need to cut? The higher the volume the more you might expect to have to pay for needed tools.
Not having a set of tanks to go with my oxy-acetylene set up my favorite metal tools are:
For sheet metal: Air nibbler. About $25 at Harbor Tool.
For Angle, strap & bars: A Harbor tool handheld power bandsaw. About $80.
For box tube, angles & bars: 14" abrasive cuttoff saw, also from Harbor tool. About $80.
For plate steel: Currently only have metal cutting blade in jigsaw. $35 for a decent one.
Cheapest option: As Bunkclimber mentioned a "Sawzall" type reciprocating saw with metal cutting blade. As cheap as $20 at Harbor Tool up to $200 for a top brand like Milwaulkee. The Milwaukee has much more power, cast aluminum frames and an internal counterbalance system that drasticaly(sp?) reduces vibration.
If you are cutting only a few pieces you could likely get by with a sawzal or jigsaw or even a manual hack saw. Basic rule about blades is three teeth per thickness of metal, but you can get by with fewer by tilting the cut.
Once again, as bunkclimber said it's a question of what you need to cut.
Doc
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#13610 - 05/19/14 08:04 AM Re: Metal-cutting [Re: Doc]
GLyford Online   content
MBN member
Registered: 02/09/10
Posts: 398
Loc: central MA
One of my favorite ways is with a 4-1/2" electric mini grinder, with one of the thin cut-off blades. For Norway, these will likely be listed as 115mm, 1 to 1.5mm thick, 22.23mm mounting hole.

If you have compressed air available, a lot of people like the 3" "die grinder" cut off wheels, too. For sheet metal, there is also a "high speed body saw". Same idea as a sawzall or jigsaw, but runs on air, and uses smaller and finer blades.

And last but not least, there is the 4x6 horizontal vertical bandsaw. Not sure how this will be listed in your local market, 100x150mm maybe? Cheaply made import saws, but they will still cut a lot of metal for you.

There is a slightly smaller handheld portable version most often referred to as a "portaband." Name brand ones are pricy, but again the import versions seem to work surprisingly well. (oops...I see Doc already gave you that one.)

Hope all that helps...


Edited by GLyford (05/19/14 08:08 AM)
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#13611 - 05/19/14 08:35 AM Re: Metal-cutting [Re: Doc]
Lincoln Offline
MBN Enthusiast
Registered: 03/25/11
Posts: 651
Loc: Parry Sound Ontario Canada *****
A lot of cutting can be done with a thin "cutting" disk for a angle grinder, they will cut just about anything but you have to be quite careful with them, NO side pressure, let the disk cut...don't use any force.
These cut very well but when not used very carefully they can be quiet dangerous!! Any crack or fracture in one and it aught to be thrown away, they could fly apart!!


Attachments
2013 - 1.jpg

Description: The image is graphic, but this does happen at times....One MUST be careful using these!!


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If you can't weld well.....weld lots...
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#13614 - 05/19/14 08:51 PM Re: Metal-cutting [Re: Lincoln]
Gator Online   smilie_flagge13
MBN Enthusiast
Registered: 02/15/10
Posts: 792
Loc: Corinth, MS *****
One of our contractors at the plant had one get away from him (off site) and run up his face. It sliced him in a second from chin to eyebrow, he was out for 3 months. I now use a face shield when cutting or grinding as well as welding gloves. Another important thing is to keep the guards on the grinders.


Edited by Gator (05/19/14 08:53 PM)
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#13615 - 05/20/14 11:48 AM Re: Metal-cutting [Re: Gator]
terry Offline
MBN Enthusiast
Registered: 02/14/10
Posts: 637
Loc: Landrum,SC ****
I am bad about taking off the guard to get room to work, gloves and face shield are a must. Been "slapped" by a few chunks of rock and left "hickies" (bruises) but no real damage. Now that I have said that......
Terry
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#13617 - 05/20/14 09:46 PM Re: Metal-cutting [Re: terry]
Doc Offline
MBN Old hand
Registered: 02/12/10
Posts: 1179
Loc: Beryl Jnct. SW Utah, Mdl Nowhe... ***
Facesheild! Always! Since a friend of mine got three carbide teeth imbedded in his jaw and neck. One they had to leave in because it was so close to his spinal column after just missing his jugular on the way in. Big saws and grinders; facesheild! Like "hotsticks" are a religion with broadcast engineers.
Doc
_________________________
You don't even have to believe in the gods to know when they are pissed off at you.....
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