HF Sheet Metal Brake

Sheet Metal Fabrication techniques, questions and help. "Tricks of the Trade"

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deltaenterprizes
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HF Sheet Metal Brake

Post by deltaenterprizes » Sun Nov 03, 2019 8:40 am

I bought a HF sheet metal brake and I am making fingers to make a more versatile.
I bought some 3”d1/2” flat bar at the scrap yard and would like to know what sizes would be best to make the fingers.
The total width is 30”, I have made 1,2,3,4,5,6,12 & 14 inch pieces so far.
The fingers will be held with “C” clamps like the pice that comes with the brake.

J.Ramsey
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Re: HF Sheet Metal Brake

Post by J.Ramsey » Sun Nov 03, 2019 3:20 pm

Make them in sizes that you think you will need.
My 4ft.Tennsmith has five 2",six-3" and five-4''

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BadDog
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Re: HF Sheet Metal Brake

Post by BadDog » Sun Nov 03, 2019 5:18 pm

I would say make them in stacking cumulative sizes kinda like very coarse gage blocks.

1", 2", 4, 8, etc.

That allows all widths from 1 to 15 by increments of 1" with no redundancy. Wouldn't be as rigid/strong, but maybe throw in a 1/2" if desired for very light work that doesn't work out to integral inches.
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SteveHGraham
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Re: HF Sheet Metal Brake

Post by SteveHGraham » Sun Nov 03, 2019 8:38 pm

If the widths are all integral multiples of one inch, it will be impossible to make things like a 4.5"-wide box.
Every hard-fried egg began life sunny-side up.

J.Ramsey
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Re: HF Sheet Metal Brake

Post by J.Ramsey » Mon Nov 04, 2019 4:51 am

A 4" finger will make a 4-1/2" wide box just fine, I you are that worried use two 2 inchers spaced apart .
Besides you cannot make a 4-1/2" box with a 4-1/2" finger it will be oversize by the material thickness.

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SteveHGraham
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Re: HF Sheet Metal Brake

Post by SteveHGraham » Mon Nov 04, 2019 9:11 am

You are going to be better off with pressure on every part of the crease.

I think we all knew that material has thickness, and I didn't say "4.5" outside width."
Every hard-fried egg began life sunny-side up.

J.Ramsey
Posts: 146
Joined: Wed Jul 25, 2007 12:19 pm
Location: S/E Kansas

Re: HF Sheet Metal Brake

Post by J.Ramsey » Mon Nov 04, 2019 9:36 am

SteveHGraham wrote:
Mon Nov 04, 2019 9:11 am
You are going to be better off with pressure on every part of the crease.
Well,I guess I've been doing it all wrong for the last 45 years thanks for pointing that out.
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SteveHGraham
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Re: HF Sheet Metal Brake

Post by SteveHGraham » Tue Nov 05, 2019 10:35 am

Always nice to wake up to a polite and patient response.
Every hard-fried egg began life sunny-side up.

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