Questions tagged [sheet-metal]

21 questions
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What's the best way to cut a circular porthole window into the sheet metal of a van?

I want to cut a 12" diameter circle into the side of my van to install a window. My current plan is cut it by taking a sufficiently sized drill bit, drilling a hole near the inside edge of the circle, and using a jigsaw to cut the rest with a fine…
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Are there any special considerations when cutting powder-coated metal?

I have a thin powder-coated steel sheet which I'd like to cut into panels. I've never cut powder-coated metal before. Are there any considerations I need to make when doing so?
WackGet
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How to fit a pvc window to a corrugated metal shed

I have a corrugated metal shed which i want to fit a pvc window. I am not so sure how should i approach to this. The shed looks like the one pictured below but there are 2 vertical perimeter channels on the gable end ( Same as the side walls in the…
Ulug Toprak
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Rules for cutting additional holes in an exterior panel body

I am looking to see if the NEC has any guidance on where you can cut a hole into your outdoor electrical panel. (To add a cable clamp). The existing pre-marked knockouts are either used or require running conduit and additional penetrations through…
bwp8nt
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How to cheaply seal a metal sheet roof done poorly

In the context of poverty, i.e. living in tin metal shacks etc. So it's all about damage control and not some fancy 6 step multi layer solution: If the roof sheeting is leaking a lot because of gaps and short overlaps between ibr metal sheets,…
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What thickness metal for ramp/walkway?

I need to construct an outdoor shallow ramp approx 4m long and 1.5m wide for a 1:12 gradient. I'm considering metal sheeting for the walkway rather than decking but I don't know what thickness of aluminium or steel would be adequate or considered…
Mr. Boy
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How to cut 2-1/4" diameter hole in sheet metal box?

I have a sheet metal (galvanized steel) box on my roof that's currently protecting the return and supply ducts for my old package unit air conditioner. I'm replacing it with a split system, and repurposing the steel box and original holes through…
Bitbang3r
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Desperately need help with insulation/hanging drywall in metal shed

A little background- I own a quadplex but, due to the insane COL in Florida, I'm currently housing 4/5 of my siblings and I need another unit for myself to live in. So I added this 20x30 steel shed to my property to convert into a livable space,…
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Sheet Metal Screws for HVAC - TEK or ZIP?

I need to purchase sheet metal screws for two residential HVAC DIY projects. I'm assembling basic rigid round peices, reducers, elbows, register boxes etc. I'm wondering what the HVAC guys reach for when buying a box/bucket of screws. Do you go TEK…
Richard
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What material can I put along a sharp, thin metal edge?

I have some sharp aluminum sheet metal, about as thin as a sheet of paper. I need to put something on the edge to protect other items from being cut by the edge. This could be a piece of rubber that fits over the edge, for instance. The nearest…
Village
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Cut sheet metal in half?

I need to cut some stiff sheet metal for roofing trim and the problem is dividing larger sheets. For example, I might have a sheet that is 6 feet x 12" and I need to divide it in half. The problem is that my snips cut a little ways into the sheet,…
Tyler Durden
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Backing substrate for tin ceiling tile

I need to do a couple of repairs on an antique sheet metal ceiling. In order to be able to nail the new ceiling tiles, I will need to apply plywood as substrate to nail into. Since the gap between ceiling joists and existing tiles is something like…
amphibient
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Creating a large thin-walled hollow cylinder/tube

I'm looking to create something like this: Structurally very simple, but the second point is stumping me, I don't know how to DIY it. Some material (wood maybe) cut into a circle. (5ft diameter) 2. Some material (???) bent into the edge of this…
user1265125
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Best way to patch small holes in sheet metal (for optics)

I am aware this is not the most important thing but it just bothers me. The moron of a contractor who installed my sub-panel left the main breaker out (which I meanwhile installed back myself) and cut a dirty piece of sheet metal to cover the whole…
divB
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What is the trade name for this kind of sheet metal cutter?

Is there a common trade name for a sheet metal shear that cuts by removing a strip, so as not to deform/bend the sides of the sheet like tin-snips do? What are these things called:
KJ7LNW
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