Extend blade life by keeping the saw s speed slow.
Best way to cut sheet metal straight.
Place the metal on a hard surface to score it and on long pieces do the bending with the score place along a sharp edge of a bench and if necessary clamp the fixed piece with a long piece of flat wood to prevent buckling the metal while bending it back and forth.
If you ve hit it hard enough the chisel will cut the sheet metal if it s thin enough.
Jigsaws and metal cutting band saws are more work but can make most cuts in light to medium sheet metal.
There is no perfect or best way to cut sheetmetal materials.
If a straight line is required it is best to shear flat metal in a metal shear.
Place the sheet metal on top of the workbench and lay out your pattern using a tape measure pencil and straightedge.
Here are a few tips for cutting metal with a recip saw.
Different methods of cutting metal work best in different situations.
The normal blade or straight pattern blade is best for making long straight cuts.
A handheld cutting tool fitted with a metal cut off wheel will easily cut through sheet.
There are two ways to cut round ducts.
How to cut sheet metal method 1 of 4.
Making detailed cuts with.
Wax your saw blade before cutting sheet metal.
A stationary or hand shear is a very good approach to delicate detail work.
Using your power tool ensure you re up against the straight edge and can follow along the.
Standard straight pattern tin snips.
Using a straight edge clamped to the edge of the bench is also a good tip to cut thin metal precisely.
They don t cut curves well.
Choose a blade with 20 to 24 tpi teeth per inch for thin metal 10 to 18 tpi for medium thickness metal and about 8.
Using tin snips for thin sheets.
Straight cutting compound snips work best for cutting thick or doubled up sheet metal.
Choose between red blue or yellow snips based on the cut direction.
Set your saw to straight rather than oscillating if there s a choice.
Simply line up your chisel along the line you are going to cut and strike the back of it with a hammer.
If your project requires curved cuts make an easy economical and adjustable.
First if you want to cut a duct near the middle and use both ends mark and cut the duct before snapping it together.
