Jccc Modified Presto 6n cutting

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Jccc
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Jccc Modified Presto 6n cutting

Post: # 25164Unread post Jccc
Fri May 03, 2013 2:09 pm

Here is a short video of my Presto 6n with vacuum and heated stylus cutting a picnic plate. I just hooked up a Fairchild cutting head to it and the sound is really well compared to the Audax head i was using before.

The head cuts really loud with the bass and mids coming in good but the highs need a little more work.
The Audax head cuts pretty loud as well with the Highs & mids coming in nice but the bass is ok.


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Angus McCarthy
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Re: Jccc Modified Presto 6n cutting

Post: # 25166Unread post Angus McCarthy
Fri May 03, 2013 3:06 pm

It never occurred to me to mount a chip tube from the top like that. Of course! Do you recall what size thread the tapped holes in the top of the carriage take?

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Jccc
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Re: Jccc Modified Presto 6n cutting

Post: # 25168Unread post Jccc
Fri May 03, 2013 3:37 pm

Im sorry i do not know the thread size of the holes on the lathe. I got the idea for mounting the vacuum there when i looked on Alan Graves site here:

http://www.prestohistory.com/Presto1.html

There is a Presto 8d that looks like it has a vacuum attached in the same area as mine.

I found sheets of metal in which i drilled holes two holes in it to mount to the top and another two to attach the copper piping. i then messed around with the angle until it started picking up the swarf perfectly.

I then attached another piece of aluminum to it so i could add the heating element for the cutting needle.

So far it works great.

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Jccc
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Re: Jccc Modified Presto 6n cutting

Post: # 25182Unread post Jccc
Sun May 05, 2013 3:10 pm

here is a sound clip of the record after it was cut from the lathe. I slowed the pitch of the record down so i could scratch longer over it.
It has the surface noise on it due it being cut on a picnic plate. The heated stylus really helps alot by taking away most of the noise but when cut on a dubplate the noise is gone and the music sounds nice and clean.

http://soundcloud.com/10shun-tenshun/sanctuary-lathe-grime

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Jccc
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Re: Jccc Modified Presto 6n cutting

Post: # 25496Unread post Jccc
Fri May 17, 2013 11:24 pm

here is a short advertisement for a small lathe cut record EP i made.

http://youtu.be/ZEVK8g2nZRI

the picnic plate was recorded at 45 rpm on a presto 6n with a Fairchild 541A-727 head that i rewound for 8 ohms myself.

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Jccc
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Re: Jccc Modified Presto 6n cutting

Post: # 26136Unread post Jccc
Sun Jun 23, 2013 4:15 pm

here is the Presto 6N cutting a plate. My camera is really bad at close ups as i wanted to show the vacuum picking up the swarf from the picnic plate.

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Jccc
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Re: Jccc Modified Presto 6n cutting

Post: # 29016Unread post Jccc
Tue Feb 18, 2014 5:31 pm

Hello. Here is my presto with a Neumann cutting head mounted on it. I used a capacitor holder to hold the cutting head in the mount.

I know it looks sketchy but it works!
Image
Image
Image

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Gus
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Re: Jccc Modified Presto 6n cutting

Post: # 29019Unread post Gus
Tue Feb 18, 2014 6:00 pm

how it sounds?

could you upload a sample sound file ?

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Jccc
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Re: Jccc Modified Presto 6n cutting

Post: # 29020Unread post Jccc
Tue Feb 18, 2014 6:31 pm

Hello. The head sounds excellent! I am powering it with a qsc rmx 1450 power amp.
The signal path goes : sound source, EQ with fake riaa, to power amp.

In the playback recordings i can hear the motor running but it is really faint but when the music comes in the motor sound disappears.

I try not to process the sound too much.

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markrob
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Re: Jccc Modified Presto 6n cutting

Post: # 29025Unread post markrob
Wed Feb 19, 2014 3:58 pm

Hi,

I notice you have no dashpot for damping. Have you had any issues with the head fluttering?

Mark

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Jccc
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Re: Jccc Modified Presto 6n cutting

Post: # 29026Unread post Jccc
Wed Feb 19, 2014 4:06 pm

What do you mean by fluttering?

Maybe i can try and make a homemade dashpot since i already went this far with this make shift set up of mine.

Any recommendations on what kind of materials is used on making a dashpot for the 6n?

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Steve E.
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Re: Jccc Modified Presto 6n cutting

Post: # 29028Unread post Steve E.
Wed Feb 19, 2014 4:17 pm

I'm not at my 6N right now, so this is from memory.

Picture a small can, about the diameter of a quarter, and two inches tall. It has a slightly smaller disc inside it with a bar poking upwards through the center. It's filled with viscous liquid: glycerine or mineral oil.

Aw, I'll take pix soon.

And yes, I know, feed screws. Soon!!

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Jccc
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Re: Jccc Modified Presto 6n cutting

Post: # 29031Unread post Jccc
Wed Feb 19, 2014 6:53 pm

Thanks steve! I did a search for dashpot and i saw the make shift one that flo did with the bottle cap and screws. I will try to make something simular to that.

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Jccc
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Re: Jccc Modified Presto 6n cutting

Post: # 29085Unread post Jccc
Sat Feb 22, 2014 10:47 pm

I made a adaptor for the neumann head to fit on the presto 6n. I used some Delrin plastic that i picked up in the scrap bin of a plastics place and then went to work.
Here are some pictures of it mounted on the lathe.
Image
Image
Image
Image

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Jccc
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Re: Jccc Modified Presto 6n cutting

Post: # 29112Unread post Jccc
Tue Feb 25, 2014 3:25 am

I relocated the vacuum ti the original location that i had it before and it is working great.


Image
Image

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Jccc
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Re: Jccc Modified Presto 6n cutting

Post: # 29176Unread post Jccc
Wed Mar 05, 2014 1:48 am

Close up of the vacuum and head
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Jccc
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Re: Jccc Modified Presto 6n cutting

Post: # 30247Unread post Jccc
Wed May 28, 2014 1:09 pm

Here is a video of a Presto k8 i got a couple of months ago cutting a plate with a fairchild head.


[Vimeo]<iframe src="//player.vimeo.com/video/96722889" width="500" height="889" frameborder="0" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe> <p><a href="http://vimeo.com/96722889">Presto k8 cutting "Visions Of The Afterlife" lathe cut album</a> from <a href="http://vimeo.com/tenshun">Tenshun Skrapez</a> on <a href="https://vimeo.com">Vimeo</a>.</p>[/Vimeo]

http://vimeo.com/96722889

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Snakeheadfishlab
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Re: Jccc Modified Presto 6n cutting

Post: # 30263Unread post Snakeheadfishlab
Thu May 29, 2014 6:23 pm

Great stuff!


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Snakeheadfishlab
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Re: Jccc Modified Presto 6n cutting

Post: # 30264Unread post Snakeheadfishlab
Thu May 29, 2014 6:24 pm

What model Fairchild cutterhead?


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Jccc
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Re: Jccc Modified Presto 6n cutting

Post: # 30265Unread post Jccc
Thu May 29, 2014 7:38 pm

hello the cutting head is Fairchild 541A-727. it is rewound for 8 ohms. I have the audio signal going through a akai eq for the RIAA and then through a tube preamp to boost the signal a tad bit.

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