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Cutting sheet metal question Bob 12-18-2006
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Posted by L Ectro on December 18, 2006, 3:36 pm


Bob wrote:
> I have some sheet metal that I need to cut for a project. It needs
> to be a cleaner cut and more accurate than can be achieved with tin
> snips.
>
> I considered buying a 7 1/4 inch cutting wheel (if they make them in
> that size) and using it in my Skill saw.
>
> My brother said he had heard that taking a regular saw blade and
> turning it over so it rotates in the wrong direction, works well for
> metal cutting.

It might work, but ... do NOT use a carbide tipped blade!! The chips may
fly off it.

>
> Anyone ever used this method or have any suggestions - pro or con?

I've had some luck with sandwiching it between two pieces of 1/4" plywood
and cutting. But, it depends on lots of things.

WHAT are you trying to cut and what specific problems are you
getting/seeing?

Pop`

>
> Thanks in advance




AppliancePartsPros.com, Inc.
Posted by on December 18, 2006, 4:51 pm



Bob wrote:
> I have some sheet metal that I need to cut for a project. It needs to be a
> cleaner cut and more accurate than can be achieved with tin snips.
>
> I considered buying a 7 1/4 inch cutting wheel (if they make them in that
> size) and using it in my Skill saw.
>
> My brother said he had heard that taking a regular saw blade and turning it
> over so it rotates in the wrong direction, works well for metal cutting.
>
> Anyone ever used this method or have any suggestions - pro or con?
>
> Thanks in advance

I use a circ. saw with an abrasive blade to cut sheet metal all the
time. This is probably the quickest, easiest way to get a nice straight
cut.

Putting a saw blade on backwards so it spins the wrong way? Sounds like
the wrong way! If you really wanna try this, just be sure that you are
NOT using a carbide tipped blade.

Mike


Posted by Goedjn on December 19, 2006, 11:36 am


wrote:

>I have some sheet metal that I need to cut for a project. It needs to be a
>cleaner cut and more accurate than can be achieved with tin snips.
>
>I considered buying a 7 1/4 inch cutting wheel (if they make them in that
>size) and using it in my Skill saw.
>
>My brother said he had heard that taking a regular saw blade and turning it
>over so it rotates in the wrong direction, works well for metal cutting.
>
>Anyone ever used this method or have any suggestions - pro or con?
>

It will depend a lot on how thick the sheetmetal is.
If you're really concerned about the clean-ness of the
cut, clamp the metal between two hunks of scrap wood,
and cut through the whole stack. You might also
consider cutting 1/16th" beyond the line, and then
grinding your way back with a sandng wheel,
if the workpeice is small.

Posted by mm on December 19, 2006, 10:02 pm


wrote:

>I have some sheet metal that I need to cut for a project. It needs to be a

As is usually the case here, you don't say how thick the sheet metal
is. I've had tremendous success cutting aluminum siding with a small
bandsaw, which is all I could afford, and a metal cutting blate.

There is a little edge left of shredded aluminum, but I think it would
brush off with my fingers. Instead I use the slightest touch of a
wire wheel on a bench grinder axle. And I mean the lightest touch,
because I didn't want to hurt the brown finish, which matched where I
was putting the item.

I'm sure the bandsaw would work very well with much thicker pieces and
with steel etc., to the limits that are given in the specs.

>cleaner cut and more accurate than can be achieved with tin snips.
>
>I considered buying a 7 1/4 inch cutting wheel (if they make them in that
>size) and using it in my Skill saw.
>
>My brother said he had heard that taking a regular saw blade and turning it
>over so it rotates in the wrong direction, works well for metal cutting.
>
>Anyone ever used this method or have any suggestions - pro or con?
>
>Thanks in advance
>


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