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 Post subject: Need help cutting aluminium diaphragm
PostPosted: Thu Aug 17, 2017 12:13 am 
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Victor II
Joined: Tue Jun 30, 2009 8:17 am
Posts: 299
I have come across a batch of NOS aluminium diaphragms. They are 49 mm diameter and in excellent condition. My problem is I need them to be 45-46 mm diameter so they will fit an average reproducer. I have tried cutting them down using a rotary compass cutter but the process is risky and bends the edge of the diaphragm.
Can anyone suggest an alternative method?.


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 Post subject: Re: Need help cutting aluminium diaphragm
PostPosted: Thu Aug 17, 2017 2:19 am 
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Victor III
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F. Depero, "Grammofono", 1923.
Joined: Thu Feb 24, 2011 4:19 am
Posts: 559
Location: Italy
Honestly, I simply trim them to size using a pair of electrician scissors, the type with curve blades. The edges can easily be flatten out by applying pressure with a wooden tool on a hard flat surface, like a marble sill. There is no need of an extremely precise cut as the cut itself will be masked by the rubber gaskets, so I keep it easy.


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 Post subject: Re: Need help cutting aluminium diaphragm
PostPosted: Thu Aug 17, 2017 10:56 am 
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Victor II
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Joined: Mon Jul 02, 2012 9:57 am
Posts: 494
Location: Hampshire, England.
A very sensible suggestion Marco and one which should work well. Let us know how you get on Chunny. What a lucky find !


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