Cutting .8 mm steel sheet

Hi all,
Will metal snips cut 0.8 mm steel sheet or am I better just using a angle grinder with a metal bit?
Or will the angle grinder distort the metal?


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1mm disc, snips would distort?

 

Screwfix will sell you a nice pair of aviation snips.

 

It sort of depends on the cut you want to do. Is it straight or curved? Is it near the edge or in the middle of the panel? Tin snips, or aviation snips, are best near the edge and you can do it without much distortion if you're careful. Further into the panel it's better to use a thin angle grinder disc for straight cuts, or power shears - air shears are cheap if you've got some compressed air.

 

a 1mm stainless steel cutting disk (that is a disk for cutting stainless) is what zedders recommended to me ages back. Pretty accurate for long straight lines, though I also have some Wiss snips which an engineering shop in Sheffield recommended as the ones to get.

 

Was wondering if that would distort the sheet though, same concern on the disc if I let it get too hot.... ?


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Straight, as per the picture.
I need to cut out the vent size to fill the vents old , water trap , hole...


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not with practice

 

Tin snips are ok with care , angle grinder is ok too with care

 

You could use a sheet metal nibbler tool or even a hacksaw.

 

The 2021 Screwfix Collection, Just For You. They're not bad quality. They're even marked port and starboard

 

I use these for my toenails and I get perfect cuts every time.

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Great for “manscaping” as well!

 

But which is best for a long straight cut on a 1mm sheet for a novice without distorting it to hell ?


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1mm slitting disc

Never had a problem, as long as you have a grinder

 

Disc gets my vote , OR ....

If you want a really neat job just find a ye local metalwork shoppe and ask them to guillotine it for you - easy peasy and no messing around

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I also use a power sheet metal nibbler but that tends to wander.

Or cut the metal with tin snips then flatten it out with a soft hammer on a block of wood afterwoods.
After all, if you are blanking off a vent hole, after you have popriveted or screwed and glued (use modern panel adhesive, pretty strong, the screws clamp it together while it cures) the new metal on, you are going to need some filler to fair it off, so the metal doesnt have to be utterly perfect.
You remove the screws afterwards and fill the holes.

 

I use one of these hand nibblers for cutting a rough shape and then trim to fit with tin snips.


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Hand nibblers are a nice toolbox addition.
Jigsaw though a piece of plywood at the same time.