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Angle Grinder Tail Piece Duplicating Machine
Topic Rating: 0 Topic Rating: 0 Topic Rating: 0 Topic Rating: 0 Topic Rating: 0 Topic Rating: 0 (0 votes) 
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Irv
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February 26, 2019 - 5:42 pm
Member Since: December 23, 2017
Forum Posts: 1171
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I have often found that common place technology in one field can often solve perplexing problems in another.  I would like to experiment with various violin tail piece designs but have no desire to use hand files and chisels on ebony.

Fishing lure hobbyists faced a similar problem and solved it by the use of 3D wood duplicators using an inexpensive angle grinder retrofitted with a carbide tipped circular saw blade.  A wood blank is rotated in synchronization with a template, and excess material is removed by the saw blade in fractional inch horizontal increments by means of a lead screw.  

Fishing lures utilize buoyant balsa wood, which is much softer than ebony.  However, I see no reason why the machine would not work on the harder material.BBADB62B-D7FB-42C6-8710-E5DDC6AEE104.jpegImage Enlarger

Research is what I’m doing when I don’t know what I’m doing.  —Werner von Braun

Without deviation from the norm, progress is not possible.         —Frank Zappa

Experience is a difficult teacher, it gives the test first and the lesson after.

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steveduf
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February 26, 2019 - 5:52 pm
Member Since: March 26, 2018
Forum Posts: 326
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And I shall call you “mr wizard”

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Irv
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February 26, 2019 - 7:40 pm
Member Since: December 23, 2017
Forum Posts: 1171
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I was only called Mr. Wizard once (at least at a distance so that I could hear it).  I consulted with a small condo complex that had a very bad iron and manganese in water problem, and the 2 inch diameter water main was impossibly restricted with thirty years of accumulated sediments.  They had no water pressure and lacked the funds to dig up and replace a thousand feet of pipe.  The alternative was to use an ice pig, but in the US the method involves the use of a million dollar tractor trailer size slushy machine.  

I used a modified 5 gallon Pepsi syrup keg (Coke kegs were more expensive on eBay), my air compressor (no charge to client), a food processor (to chop up ice),  100 pounds of ice, and a gallon of propylene glycol.  I called the health department to see if I required any permitting, and they said the vendor had all necessary procedures (news to me, since I was the vendor).  In eight minutes, the pig cleaned from beginning to end of pipe.  And for eight minutes, a rich chocolate fondue of material came out of the drain line.  We repeated the process because we had the ice, and the system has been great ever since.  Total expenditure was less than $150.  I am Mr. Wizard to that condo association.  

Research is what I’m doing when I don’t know what I’m doing.  —Werner von Braun

Without deviation from the norm, progress is not possible.         —Frank Zappa

Experience is a difficult teacher, it gives the test first and the lesson after.

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steveduf
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February 26, 2019 - 8:08 pm
Member Since: March 26, 2018
Forum Posts: 326
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I just appreciate your analytical/scientific approach.  If we were neighbors sharing a workshop... we’d be dangerous, and boy it’d be fun.

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Irv
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February 26, 2019 - 9:47 pm
Member Since: December 23, 2017
Forum Posts: 1171
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2D45B8AE-6A37-4295-8E93-697B7834F4DE.jpegImage EnlargerUntil Mr. Fiddlerman pulls the plug on us, this forum had got to be the next best thing.  I cannot believe how much I have learned about violins in the past few months.  

Research is what I’m doing when I don’t know what I’m doing.  —Werner von Braun

Without deviation from the norm, progress is not possible.         —Frank Zappa

Experience is a difficult teacher, it gives the test first and the lesson after.

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Fiddlerman
Fort Lauderdale
February 28, 2019 - 5:19 pm
Member Since: September 26, 2010
Forum Posts: 14708

LOL Irv!

"The richest person is not the one who has the most,
but the one who needs the least."

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