Malco Turboshear Single ? or ? Doublecut ?

[Marctrees]

Malco/ Kett Turboshear Single ? or ? Doublecut ?

For typical R panel and corrugated roofing/ siding panels.

To make straight cuts, where BOTH pieces will be used...

For nicest edges on BOTH pieces.

Did the research I could..

Seems double cuts slower than single, but will make BOTH edges clean.

Regular single cut seems to often distort the "Drop" side.

Am I right ?

What experience do you have ?

Will be using infrequently.

Not everyday production.

No, I don't want the HF model.

Malco ******** new, or maybe Kett w the motor if someone has a gently used one.

Marc

 

[mik386]

You are correct. I am an HVAC fabricator and double cut is the way to go. They are not as maneuverable as single cut when making turns but it can be done.

 

[danski0224]

Neither of those will cut corrugated panels well, if at all.

Yes, double cuts leave a (relatively) distortion free cut on both sides. A Unishear will leave less distortion on flat metal than the Malco turbo shears.

A siding table is the choice for straight or angled straight cuts in corrugated panels/siding/soffit. A circular saw rides in a track, and the track acts as a guard to keep the panel from being pulled up too far. These run about $1k from Tapco or Van Mark.

There are profile metal nibblers, they are expensive and will not cut through double thickness like a hem or catch (female lock seam).

 

[bullnerd]

I have the malco single that you add onto a drill, yeah it leaves a very wavy edge on one piece.

You can cross cut with it, but again, not a nice finish.

For me, a novice with these panels, the diablo metal blade in a circular saw leaves a way better edge. But NOISY!

 

[bradpac]

Finally something on this forum I know enough about to contribute on.
I work for a metal roofing manufacturer/distributor, we sell and work with these tools everyday.

The Malco Turboshear is easily the best choice, it works well, and its hard to beat the price over a dedicated shear, but Kett does make some good tools if you want to spend the money.

For cutting panels with corrugations, the single cut is the way to go. A double cut won't maneuver over the corrugations, especially in a wavy corrugated profile. Double cuts work well on flat metal.

Most of the guys that use them around here for walls cover the edges of the material with a hemmed flashing anyway so the little bit of waviness the single cut leaves behind isn't seen, and on a roof application it is too far away to be noticed.

You could also use a metal cutting saw or saw blade, it will leave some burrs, but its a pretty clean cut, you just have to make sure to clean up the metal chips left behind or they will start rusting quick.

 

[jgromada]

There is no doubt a dual cut will be better if you need a nice edge on both pieces. I had roofing panels to cut and only one model TurboShear (Malco) had the depth of cut to handle the raised sections of panels. It worked well but once again I only needed the main part of panel