Shoeless nibblers

[MrFluffy]

Has anyone seen on their tinternet travels, a set of air or electrical nibblers which dont use a fixed shoe to shear against underneath?
Ive got the sort that punches the little circles out as it goes along, but I find my monodex hand nibblers incredibly useful too, they have a top shoe split in two, with a blade which goes through the sheet, and shears the sheet against the upper mounted shoe. The result, they cut a smooth 3mm circle, leave a treated edge and dont distort the sheet.
So, im looking for a powered version of the monodex nibblers, anyone seen any?
Heres the hand manual version if anyones not sure what I mean...

 

[irondarren]

All the ones i have seen are the punch and die type that leave billions of little cresent moon shape chippings lying around. normmaly air or electric powered

 

[shenion]

Here the slit cutters are called HVAC snips. I have a manual pair. Nice as they don't bend the metal and can work on curved surfaces.

 

[wyn]

Are these Clarke ones the sort of thing you are after..... Might be a bit too big though.


These look a bit smaller.

 

[MrFluffy]

Ah, the first ones look like some snips I have already, but instead of a nibbling action they shear with a blade which leaves nasty edges and is difficult to steer. Plus mine keep jamming with swarf and require resetting all the damn time.
However the second link looks a bit closer, have to leave a few hints for mrs f now

 

[hotrodder]

All of those 3 bladed tools are shears AFAIK. They cut a 4-6mm strip out of the sheet rather than nibbling. No distortion to the cut edge as the moving blade is cutting against 2 fixed blades, no razor sharp semi circles everywhere but they are limited to large radius cuts

I 've got a makita js1660. Very clean edges, with a little practice will cut very straight too. Goes through 1.6mm steel, 1.2mm stainless like butter. It's rated to 2.5mm on Al but tends to be harder to control above 2mm as the strip tends to jam as it's curled out of the jaws. As above REALLY doesn't like curved cuts unless they're large radius

As in the google link there are also 2 bladed shears that'll cut a tighter radius (still not as small as nibblers though) but with more distortion

 

[chunkolini]

These are damn good, see link at bottom I have the slightly smaller version rated to 1.6mm mild and have used them loads on 1.2mm mild and 2mm stainless steel. They wil cut a circle around 50mm diameter and leave a clea edge with no burr, I was making these today 1mm stainless, all bent up by hand I was expecting a bloodbath, I small 'paper' cut was all I got.

They are around 25-25 cm tall the petals are about 5mm wide.

http://www.sitebox.ltd.uk/proddetail-gsc28-bosch-gsc-2-8-sheet-metal-shears-240-volt-only.html

Highly reccomended, pricey but worth it.

Chunko'.