The Secret Society of Lathe Trolls

This is my point, they don’t need to put “cocaine free” on the bottle because even though it used to contain coca leaves it doesn’t any more, and nobody would assume it does. As most people who were born after 1886, I had heard about Coca-cola before I knew what coca leaves and kola nuts were. It s...

The Discogs entry for Audio Devices, Inc. has a relevant blurb: 'Audio Devices made blank acetate discs under the trade name Audiodisc for home-cut recordings (such as the "V-Discs" popular during World War II), as well as lacquer blanks for the professional recording industry.' [Note the change in ...

Correction according to whom? Larry Boden, of course, authored the second edition of his compendium. It reads correctly now, according to Larry Boden and, logically, to our AussieOzborn who raised the initial point about 'acetate' being an incorrect word for 'master [disk]'... No one can force you ...

Yes, he corrected that in the second edition. The same sentence (on p. 1) from 2012 reads: 'The cutting stylus in the tip of the cutterhead etches the tone as a side to side continuous physical translation in the surface of the lacquer master disc...' As for 'lacquer', Wikipedia's entry reads, "Lacq...

Haven't seen a Presto, but the L. J. Scully platter has an oil well, and the dip stick is parked inside the A-table. It takes SAE 10 (eq. to ISO32) motor oil. I've been using SAE 10 pneumatic lubricating oil, fwiw. The feedscrew takes no lube on its thread, but occasionally, oil should be added to t...

I had hoped they'd be willing to edit the .pdf for the benefit of all. One can demo Adobe Acrobat, free, for 7 days, and edit the paper. Will consider a Comment to the JAES. I'm a member, but not a Fellow, so they might not like the 'bandwidth'. Fwiw, I still welcome the use of 'acetate', even today...

Although there are permissible mis-usages of the term, acetate, AussieOsborn is right, and you should change that word in your interesting paper to 'lacquer'. This is because, although 'acetate' is used to refer to lacquer-coated disks when used as instantaneous records - ones which you can play, bo...

There's acetate in record-pressing vinyl (Polyvinyl acetate) and, according to R. K. Morrison (in Disk Recording 1930-1960), there used to be blank records for amateur use made of 'cellulose acetate'. I've also heard that there's a little ethyl acetate in nitrocellulose lacquer as a solvent for maki...

Air bubbles in the think-tank? (; It would be after the cut, so, possible, since we at least agree that the center line of the cutting stylus was not ruined, despite the bulges where it made the deepest cuts, but it's extremely less likely that gentle bubbles broke the highest Nickel tips off the el...

Your questions are mostly addressed on the vinylrecorder website. For example, on this page (https://www.vinylrecorder.com/order.html) the 19" main unit with RIAA encoder is said to provide groove control and 'stylus heating regulation'. So, yes, the stylus is heated, even when cutting vinyl (which ...

Right, innit? It was not any electroformer who ever polished a stamper. As I've been saying, it was pressing plants that did it, before installing them in the press. I Fibo-U-nacci. It also explains what happened to that center line - pressed by the broken-peaks of an elevated groove, if Fr. José is...

They actually did do a lot of stamper polishing, back in the day. Also, a major Midwest-American pressing plant was polishing stampers when they started out about ten years back. They switched to buffing mothers (with Mother's Rouge!) when their electroformer scolded them about wiping the elevated g...

Is there another scenario? The stamper ridge's ultra-brief nickel-peak (where the cutting stylus was moving within one half-cycle of vertical motion) could have gotten smashed flat in the press upon initial closing or over time and still seemed to make good pressings since the majority of the ridge...

Boa tarde, utilizo uma mangueira de látex âmbar de 5/16 (polegadas) de diâmetro interno na minha Scully. Descubra qual o diâmetro interno que sua mangueira precisa ter para que não sejam necessários “zip-ties”. Deve permanecer no lugar apenas com fricção. Procure por tubos de látex. Bom corte.

Beautiful lab and excellent care shown. Two marks for Stamper Lab.

Looking great, Thomas. Vielen Dank für Ihre Fortschrittsberichte. √

There's this TELDEC_DMM_Technology-EN.pdf which is worth checking...√

Lacquers need a hot stylus to preclude groove hiss and to minimize the treble loss that normally occurs with decreasing disk diameter. The stylus heater wire would normally be passing around 1/2 of an Ampere of charge to make the right heat. You can dial in the correct heat by ear. Cut silence while...

beltinfo@fnsheppard.com. These guys are near me - right across the river. Wonder if they'd make you some samples without having to order a gross.

Thank you, José, but I hope you noticed that Nygaard wrote, 20 degrees, plus/minus five, so, 25, would be within target... However, Nygaard also wrote that Westrex noticed closer to 8 degrees of lacquer elasticity. So, I went and checked the cutting head and saw the bit-chink on the quick-disconnect...