Tpi Reciprocating Saw
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How to trim 2" off an old aluminum heating duct?
I have an old house where the owner left the heating duct sticking out of the wall by two inches. It looks like aluminum. I don't want to use tin snips or any hand tools to cut it. I have a reciprocating saw--what gauge blade [TPI] is right to cut this...and do I need to oil the metal surface before I cut it? Thanks.
Its probably galvanize not Aluminum, and what is sticking out, is a Flange, to be folded back against the wall, and screwed tight, then put the Register over it. Tin snips is the best tool, a Ricip saw will only bounce around and work half a--- . but you should bend it back flat and screw it to the wall, trim so the Register fits over it.
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50 BLU MOL 9 RECIPROCATING SAW SAWZALL BLADES 6TPI USA US $66.99
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DeWalt DW4810 4 18TPI Reciprocating Saw Blade 5pk US $4.00
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DeWalt 6 10 TPI Wood Nail embedded Reciprocating Saw Blades US $10.00
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NEW MILWAUKEE 10pc HEAVY DUTY Bi METAL SAWZALL BLADES US $27.50
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TASK 3 pack of Heavy Duty Reciprocating Saw Blades 6 9TPI NEW US $9.99
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Milwaukee 5pk IceEdge Torch Blades 9x14 TPI 48 00 4787 US $16.99
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Milwaukee 48 01 7713 9 10TPI The Torch™ Sawzall® Blade US $240.00
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Craftsman 6 x 14tpi Reciprocating Saw blades 1003811 US $3.00
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Milwaukee 48 01 7188 SUPER SAWZALL BLADE 18T 9 100 PK US $179.99
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Milwaukee 48 01 7286 SUPER SAWZALL BLADE 24T 6 100 PK US $129.99
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DeWalt DW4811 6 18TPI Reciprocating Saw Blade 5pk US $6.00
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Bosch 25 Pc Bi Metal 10 Reciprocating Blades Bag US $52.00
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NEW Skil Pruning Reciprocating Saw Blades 5 Pack Model 94100 05 QUICK SHIP US $28.24
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Bosch 25 6 Reciprocating Blades With Free Tool Bag US $42.00
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18 Volt Cordless Reciprocating Saw US $79.99
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US $19.95