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Removing dents from a tuba. 12:45 video:
https://www.youtube.com/watch?v=KxUibdn97C8
Previously:
https://www.homemadetools.net/forum/...391#post173395
https://www.homemadetools.net/forum/...528#post158817
https://www.homemadetools.net/forum/...071#post153458
https://www.homemadetools.net/forum/...347#post173213
Reckon dent balls prototype of mandrel benders, except for so many increments.
Mandrel benders are great for shaping new tubing but completely useless when having to re form tubing that already has compound bendsQuote:
Originally Posted by Toolmaker51
One thing I found a little frustrating (as a hobby machinist) is that I want all the balls in the case marked for diameter (in thou. or mm equivalent).
I guess this is a case of aesthetics over science.
What's with the haphazard placement of those dent balls in that wooden case? Was the person who made it drunk?
Perhaps he had a high school level understanding of fractions - you know, "3/8 is bigger than 1/2 because 8 is bigger than 2"Quote:
Originally Posted by nova_robotics
Less sarcastically, perhaps each row is for a particular pipe size and all the ball sets were not acquired at the same time so the holder evolved rather than being designed for the complete ensemble.
I know you're an old fart, but I didn't think senility had set in just yet. Where are those rows you speak of there Marv? Maybe I don't have a high school understanding of fractions, but you don't appear to have a kindergartener's comprehension of drawing a straight line.Quote:
Originally Posted by mklotz
The video rates that job "Hard", on a scale of one each hammer/ screwdriver/ adjustable wrench. Part of that might be selecting pull throughs. Wonder that as different instruments clearly vary in length, they maybe arranged by corresponding taper instead of actual progression of size.
At the same time, very pleased a full set of imperial pin gauges .011-1.000 aren't randomly distributed!
BTW, such pins are available most commonly .0002 under, then .0002 over. They are also graded by accuracy, like gauge blocks. A different type of pins are supplied in each increment on-size, accompanied by .0001's of each.
Next, under higher tolerance requirements, air gauging....
I had to search for that. Very cool. I had no idea it existed.Quote:
Originally Posted by Toolmaker51