Quote:
Originally Posted by Zoomin
Now that is totally cool! Making your own tool like that.
I'm not sure where I heard this, or what material it's used on, but the myth has it that if use fill the tube with sand it won't collapse.
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Dry sand will stop the tube from collapse. Pack it in tight so there is no air trapped and cap the ends. I have seen square bent into tight radias with this method.