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Tubelab Discussion and support of Tubelab products, prototypes and experiments

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Old 25th February 2018, 03:28 AM   #11
pblix is offline pblix  United States
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Drill away. Doesn't seem like anything can stop you.
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Old 25th February 2018, 02:23 PM   #12
DaMuffinMan is offline DaMuffinMan  United States
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You could stop me or anyone else by explaining why it's a bad idea.
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Old 25th February 2018, 02:54 PM   #13
Tubelab_com is offline Tubelab_com  United States
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I have never tried it, but drilling through laminations (if possible) may mess up the magnetics by creating eddy current paths that were not intended in the design. Each lamination is coated with a nonconductive layer. The laminations with the holes were drilled before coating. Drilling will expose bare metal.

That said, I doubt that 4 holes will totally trash a choke, but the thin and brittle metal will tend to grab the drill bit. If you have a drill press, a drill bit and spare choke to try, let us know what happens.
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Old 25th February 2018, 03:31 PM   #14
Lee from Chitown is offline Lee from Chitown
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Contact the manufacturer.
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Old 25th February 2018, 03:45 PM   #15
pblix is offline pblix  United States
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Quote:
Originally Posted by DaMuffinMan View Post
You could stop me or anyone else by explaining why it's a bad idea.
In addition to what George said, the heat generated by a drill will likely destroy the integrity of the domains in the metal and thus ruin the magnetic properties of the core. You'd need a lot of coolant etc. On and on. Sometimes when people give a short answer it's a clue for the OP to do his/her own research. This could be one place to start: Electrical steel - Wikipedia
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Old 25th February 2018, 04:25 PM   #16
Evenharmonics is offline Evenharmonics  United States
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Find a different bigger cover so that you don't have to drill the choke.
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Old 25th February 2018, 05:37 PM   #17
zman01 is offline zman01  Bangladesh
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End Bells for Triad C-14 X
DaMuffinMan,

Does a cover like this help? Not exactly compact...

Aliexpress.com : Buy The transformer cover drawing tube amplifiers chassis shielding cattle cattle cover 85mm*85mm*100mm 1piece Free Shipping from Reliable amplifier products suppliers on VIC Audio-HiFi
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Old 26th February 2018, 01:23 AM   #18
DaMuffinMan is offline DaMuffinMan  United States
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Thanks for the reply's everyone!
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Old 1st May 2018, 01:05 AM   #19
Einric is offline Einric  United States
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End Bells for Triad C-14 X
I made decorative end bells on my SPP Choke from the same wood that the chassis was made from.
I used hot glue and stuck them on.
Worked Great!
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