small diameter cuts (neumann/scully)

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tragwag
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small diameter cuts (neumann/scully)

Post: # 40865Unread post tragwag
Wed Feb 24, 2016 11:42 am

I was trying to wrap my head around how a pro lathe (Neumann/Scully) could cut super small discs on lacquer.
Going back to the time when dolls had "roulette" records that were 2-3" in diameter, with a few very short sayings.
up to today where Erica Records offers 5" records as a standard option, and down to 2" records as a custom job.
From what I've seen of the Neumann - the head could not clear the center spindle while cutting much farther in than the label area.
And even so the auto lead out would engage at that small of a diameter correct?
The Scully seems more modifiable as it's not always run by a pitch computer.
anyone have any insight?
making lathe cuts on a Presto 6N, HIFI stereo cuts on vinylrecorder
at Audio Geography Studios, Providence, RI USA
http://www.audiogeography.com

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markrob
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Re: small diameter cuts (neumann/scully)

Post: # 40870Unread post markrob
Wed Feb 24, 2016 1:15 pm

Hi,

Check out US patent 4597700 for a later 1980's approach to the problem.

Mark

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dubcutter89
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Location: between the grooves..

Re: small diameter cuts (neumann/scully)

Post: # 40872Unread post dubcutter89
Wed Feb 24, 2016 4:49 pm

Basically you can modify any lathe to do anything, you just need to know how to do so...
I've once seen some weird Neumanns with adaptors and extra holes in the platter which I was told were for custom records.
With bigger cutting heads the center pin has to go, the rest is quite doable..

There are some videos by the Grand Masters (Aardvark, Flozki)

http://flozki.tumblr.com/

https://vimeo.com/125891477

https://www.youtube.com/watch?v=BidQnqJILZc


Have Fun!

Lukas
Wanted: ANYTHING ORTOFON related to cutting...thx

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opcode66
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Re: small diameter cuts (neumann/scully)

Post: # 40883Unread post opcode66
Thu Feb 25, 2016 9:03 am

All you need is a bracket to extend the suspension out fuether. Problem solved. Nothing else is required.
Cutting, Inventing & Innovating
Groove Graphics, VMS Halfnuts, MIDI Automation, Professional Stereo Feedback Cutterheads, and Pesto 1-D Cutterhead Clones
Cutterhead Repair: Recoiling, Cleaning, Cloning of Screws, Dampers & More
http://mantra.audio

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tragwag
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Re: small diameter cuts (neumann/scully)

Post: # 40888Unread post tragwag
Thu Feb 25, 2016 10:48 am

wow! That really is something.
Flo went with the custom setup, awesome.
The Aardvark video looks like a scully in which they removed the center pin, and then taped the lacquer to the platter.
making lathe cuts on a Presto 6N, HIFI stereo cuts on vinylrecorder
at Audio Geography Studios, Providence, RI USA
http://www.audiogeography.com

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EpicenterBryan
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Re: small diameter cuts (neumann/scully)

Post: # 40932Unread post EpicenterBryan
Sat Feb 27, 2016 12:57 am

opcode66 wrote:All you need is a bracket to extend the suspension out fuether. Problem solved. Nothing else is required.
Show us it's "problem solved" and you can make your lathe with an SX or your head clear the center post. I call total BS on this...

Bryan

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opcode66
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Re: small diameter cuts (neumann/scully)

Post: # 40936Unread post opcode66
Sat Feb 27, 2016 5:08 am

No problem. Since this is not paid work or anything I personally want to do it has a very low priority. But, the work is now logger in my official schedule.

Essentially a block of wood cut to shape with a hole drilled through (about 4") and a slot routed perpendicular to ths hold, a longer bolt with mactching threading, some long cable ties to help relieve strain, and disconnection of the microswitch cable in the back of the lathe body. That is all. Any VMS owner can validate this approach. That is how it has already been done by others in the past. I would simply be making my own version of what has already come before. Cheers!
Cutting, Inventing & Innovating
Groove Graphics, VMS Halfnuts, MIDI Automation, Professional Stereo Feedback Cutterheads, and Pesto 1-D Cutterhead Clones
Cutterhead Repair: Recoiling, Cleaning, Cloning of Screws, Dampers & More
http://mantra.audio

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