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We appreciate your help
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02-24-2022, 09:09 AM
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Ready
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Join Date: Oct 2013
Posts: 19,173
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Quote:
Originally Posted by Ol' Ken
How it all started..
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Good one!
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02-24-2022, 02:46 PM
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Rational Anarchist
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Join Date: Jul 2014
Location: DFW
Posts: 7,315
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Quote:
Originally Posted by BigElCat
It's an intriguing concept, but I can't picture it mentally.
I'd need to see some kind of pictorial or video demonstration.
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I think an origami caltrop has potential. Sold as parts with instructions, manufacturing a shipping cost will be minimal. They can be built as a fun family bonding activity. Up-selling fancy looking paper should be highly profitable.
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"We have met the enemy and he is us."
Last edited by nailer; 02-24-2022 at 02:55 PM.
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02-24-2022, 06:02 PM
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Senior Member
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Join Date: Oct 2019
Location: South of KC, Kansas
Posts: 1,445
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Quote:
Originally Posted by donquixote99
Good one!
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It's like trying to explain why there can be no Independent Trucker's Union.
Even attempting to explain is impinging their freedom.
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02-24-2022, 07:11 PM
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Ready
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Join Date: Oct 2013
Posts: 19,173
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Quote:
Originally Posted by BigElCat
It's an intriguing concept, but I can't picture it mentally.
I'd need to see some kind of pictorial or video demonstration.
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Here you go.
(Note, for some reason, when I upload these they rotate. Turn them back 90 degrees clockwise)
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02-24-2022, 07:43 PM
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reflexionar
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Join Date: May 2009
Location: Central Oregon
Posts: 2,273
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Quote:
Originally Posted by BigElCat
Your "bend" is actually called a 'brake'. The tool that makes the brake is also called a brake.
I get the feeling you haven't stuck a 1" sheet metal square into a brake diagonally.
And then you'd have one half of a Caltrop that would require a jig to weld to the other half.
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I use a brake every day. I fail to see a problem forming a 1" square diagonally. I do much more difficult things on a daily basis. However. if the purpose is to puncture tires I would use a bigger square. The only way they will be very effective is if they have a flat side down. The sin of a 45 degree angle with a 1" side would give .707", which would be just over 5/8" max to puncture with 16ga metal. I would think you would want at least a 1" tall point which would require a 1.5" square, minimum.
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“Anyone who is capable of getting themselves made President should on no account be allowed to do the job.” Douglas Adams
Last edited by mpholland; 02-24-2022 at 07:46 PM.
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02-24-2022, 07:50 PM
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reflexionar
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Join Date: May 2009
Location: Central Oregon
Posts: 2,273
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Quote:
Originally Posted by donquixote99
Here you go.
(Note, for some reason, when I upload these they rotate. Turn them back 90 degrees clockwise)
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That would be the worst position for them to fall. A tire would make them try to rotate, forcing an attempted flattening of the sheet metal by trying to force the brake out.
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“Anyone who is capable of getting themselves made President should on no account be allowed to do the job.” Douglas Adams
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02-24-2022, 08:02 PM
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Senior Member
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Join Date: Oct 2019
Location: South of KC, Kansas
Posts: 1,445
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Quote:
Originally Posted by mpholland
I use a brake every day. I fail to see a problem forming a 1" square diagonally. I do much more difficult things on a daily basis. However. if the purpose is to puncture tires I would use a bigger square. The only way they will be very effective is if they have a flat side down. The sin of a 45 degree angle with a 1" side would give .707", which would be just over 5/8" max to puncture with 16ga metal. I would think you would want at least a 1" tall point which would require a 1.5" square, minimum.
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Forget the 1".
Grab a piece of paper, fold it into a square. Fold the square diagonally at 90 degrees. The result is nothing like a caltrop.
You get one triangle at 90 degrees from another triangle. It's an unstable thing that will roll over if a tire runs over it. It could land with the single point facing any direction, but not straight up. If it lands with a point facing straight up, the tire will crush it flat.
(edit---I could not see any of the three posts above when I made this post).
Last edited by BigElCat; 02-24-2022 at 08:05 PM.
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02-24-2022, 08:18 PM
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Senior Member
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Join Date: Mar 2020
Posts: 6,117
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Can't we just bust a bunch of glass bottles in the street?
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Joe whupped him before and he'll do it once more.
BIDEN/HARRIS IN 2024
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02-24-2022, 08:21 PM
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Senior Member
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Join Date: Oct 2019
Location: South of KC, Kansas
Posts: 1,445
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Quote:
Originally Posted by RickeyM
Can't we just bust a bunch of glass bottles in the street?
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You'd have to go back and make sure the bases are sitting flat after the bottle breaks.
Even then, glass is not as effective as a steel caltrop.
What the CIA does...oops.
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02-24-2022, 09:36 PM
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Ready
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Join Date: Oct 2013
Posts: 19,173
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OK, spent a little time checking out the state of the art in tire-puncturing things.
Here's a design that uses flat sheet metal--two identical parts make a sort-of classic caltrop shape. Some assembly required. Caltrops on Amazon
Cops use spike strips. Car and Driver tested some.
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