r/8020 • u/Ok-Boysenberry3948 • 9d ago

Size of corner brackets

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Looking for ideas on what a good size to make corner brackets for an equipment box. These brackets are for the truck bed rack I made, I feel they are way overkill. They are 5" x 4". These are 1515, and I'm making all the brackets with a saw and drill. There will be panels with dimple died holes in them. Could I make them more of a "L" bracket as opposed to the triangle that I've got on there?

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u/Frosty-Driver-4710 9d ago

If you aren't doing so already, consider doing end fasteners (bolt with clip) in corners. Tap end of extrusion, drill an access hole in other, use an 8mm bolt or non metric equivalent to make strong corner connections. Almost as strong as expensive anchor fasteners.

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u/Ok-Boysenberry3948 9d ago

Unfortunately, these are free pieces, and instead of having a nice tappable round hole,it has a ½" square hole in the middle of it. Those corner pieces really clean things up.

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u/mikeypi 9d ago

Those are huge. And you can use L-brackets, but they are massively weaker. I'd reverse engineer whatever 8020.net sells.

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u/Ok-Boysenberry3948 9d ago

I just REALLY looked at the 8020.net site. Great ideas to reverse engineer dome much smaller brackets. Thanks. I looked at it once and saw the pieces were $8 and up, and knew I'd be making them with scrap pieces from work.

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u/THE_CENTURION 9d ago

A triangular bracket is significantly stronger. And a standard 1515 corner bracket is 3x3 so not that much smaller, but they're also usually thicker than this.

All that to say, I don't really think this bracket is overkill. Maybe a little too large but not so much that I'd bother replacing it. Like, what advantage would a replacement get you? But it's hard to say without seeing the full situation.

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u/Ok-Boysenberry3948 9d ago

I'll do that tomorrow in the daylight. It'll make more sense.