Welcome, Newbies! Say Hi in this thread!

Introduce yourself! Recommended for people who are just starting out, as opposed to experienced lathe cutters who are new members.

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Re: Welcome, Newbies! Say Hi in this thread!

Unread postby SibertInstruments » Fri Jun 02, 2017 5:27 am

Hi
My name is David Gardner and I am the MD from Sibert Instruments in the UK, manufacturers of Stamper punching and finishing equipment from both the Optical Disc Industry and for many more years the Vinyl industry. Were are currently developing new equipment for vinyl manufacturers and thought we should make ourselves known on the forum in case anyone wnated to get in touch for new equipment, help on old Sibert equipment, spare punches etc. And to generally see what is going on in the industry and how we can help.

David
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Re: Welcome, Newbies! Say Hi in this thread!

Unread postby untitledthe » Fri Jun 02, 2017 2:37 pm

Welcome
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Re: Welcome, Newbies! Say Hi in this thread!

Unread postby evildrome » Wed Jun 21, 2017 7:56 am

Hi All,

My name is Wilson Logan.

I was contacted a while ago by an Italian chap who asked me if I could make record cutting needles. I make tungsten carbide Drag Engraving cutters and that's how he found me.

I am working from a 80 year old patent drawing.


Image


I have replicated the gross geometry but I am very keen to implement the patent description in full.

This means creating the "burnishing facet" which as you can see is umm.. 25 microns across.

I am experimenting with electrochemical machining as trying to create this facet mechanically seems like a fools errand.


My needles are 12mm long by 1.5mm diameter with a location face opposite the cutting face. 87 degree front face angle, 45 degree back angle.


Image


Anyway, the Italian chap has left me somewhat in the lurch by deciding to dismantle his home made lathe for repair / modification.

I'll be honest, it took me a long time to get this far and I can't really complain.

But I would like to have someone test my needles.

My eventual aim would be to sell them but I did this for fun and really to see if I COULD do it.

Its precise work and not my usual thing so I just initially wanted to see if it was possible with my motley collection of 40 year old machine tools.

These are some early tests.

Image


I don't have pics (yet) of my latest efforts. The finish has been improved since.

Clearly I could make any needle with roughly this geometry.

Locating faces can be cut as required. Holders fabricated as desired.



Cheers,

Wilson.
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Re: Welcome, Newbies! Say Hi in this thread!

Unread postby markrob » Wed Jun 21, 2017 9:57 am

Hi,

Welcome to the forum. I could not see any of your pictures. How are you fabricating your styli? Are you grinding or lapping? Are these intended to be cutting or embossing styli? You need really smooth mirror finishes on the facets to get the required edge sharpness. As far as the burnishing facets are concerned, I would forget about them until you are able to make good quality cutting styli. I'm also not sure if carbide can hold as sharp an edge as is needed. HSS works well, but has short life.

Mark
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Re: Welcome, Newbies! Say Hi in this thread!

Unread postby markrob » Wed Jun 21, 2017 10:01 am

Hi,

Now I see you pictures. They look nice, but maybe need a finer finish. Back when I was playing with this, I used a wet diamond lap to rough the faces and then finished to a mirror with an wet aluminum lap charged with very fine diamond powder. I guess you'll have to find somebody to test these and report back.

Mark
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Re: Welcome, Newbies! Say Hi in this thread!

Unread postby Ember » Thu Jul 06, 2017 8:40 pm

Hi!
My name is Ember. Thanks for allowing me to join! I'm here to learn and make friends. I'm especially interested in connecting with bands members who play grunge/alternative music.

I would like to learn to cut and press. Any thoughts on which is better?

Ember

Follow me on twitter @thinkslikeaking
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Re: Welcome, Newbies! Say Hi in this thread!

Unread postby norwegianblue » Thu Aug 10, 2017 3:31 pm

HI!

We're Norwegian Blue Records: a tiny label focused on small-scale cassettes and lathe cut vinyl out of Lethbridge, Alberta, Canada. We just blundered our way into an old lathe-cutter (1940's-ish Masco) and would love to know more about the world of cutting records.

Can't wait to meet everyone and learn lots!
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