Over-cutting anyone done any?

[mrd]

Hi,
I'm writing an academic paper about, and doing some, experimental cutting practices. I have a bit of a list going of works already out there but I'd be interested in some work that any trolls have done. Anyone ever do any deliberate cutting over existing grooves, yours or otherwise for experimental purposes? Thanks in advance

[kugelblitz]

Not exactly what you are talking about, but this comes to mind: https://www.jeroendiepenmaat.nl/portfolio/mes-ep01-frnsbrggn/

The music is recorded using an amplified knife. In a locked groove the knife cuts out the groove, over and over again, untill the original audio is hardly recognizable.
12” record with two clear 7” mounted on it.
The 12” is used as a source for the music that is on the 7” records.

[mrd]

Not exactly what you are talking about, but this comes to mind: https://www.jeroendiepenmaat.nl/portfolio/mes-ep01-frnsbrggn/

The music is recorded using an amplified knife. In a locked groove the knife cuts out the groove, over and over again, untill the original audio is hardly recognizable.
12” record with two clear 7” mounted on it.
The 12” is used as a source for the music that is on the 7” records.

That's great! And one I wasn't aware of. There's a similar workl by Yann Leguay too, but thanks for linking it!

[mrd]

If anyone's interesting in some of this experimental practice. Here's a snippet of some overcutting on an existing pressed record i did. Link in instagram bio (and some more videos on YouTube there too) https://www.instagram.com/p/Cs66r37t5wL/

[boogievan]

You may have encountered this concept in your study, already, but it may be worth mentioning in your paper that, with the standard, Micropoint-style lacquer-cutting stylus, having the enormous 40-degree back angle, when we get to the end of the side, due to the ever- slowing land speed at reduced disk radii when the angular velocity of the platter is constant, the stylus is always somewhat, or partially 'over-cutting' high frequency (short-wavelength) modulation of the groove, although this is inadvertent, rather than deliberate. The result is distortion and attenuation of the high frequencies due to self-erasure (which is due to this kind of 'over-cutting' you mention)... It is sometimes called an effect of 'diameter loss'. Whereas, it's specifically the loss of land speed sufficient to get the disk area that's being cut fast enough out of the (fixèd) stylus's way. If the platter would spin faster as we got to the end of side, it might be fast enough to mitigate this. Using a stylus with a smaller back-angle, as was developed for DMM cuts, can also preclude (unwanted, automatic) self-erasure of short wavelengths at the end of the side, as well.

[mrd]

You may have encountered this concept in your study, already, but it may be worth mentioning in your paper that, with the standard, Micropoint-style lacquer-cutting stylus, having the enormous 40-degree back angle, when we get to the end of the side, due to the ever- slowing land speed at reduced disk radii when the angular velocity of the platter is constant, the stylus is always somewhat, or partially 'over-cutting' high frequency (short-wavelength) modulation of the groove, although this is inadvertent, rather than deliberate. The result is distortion and attenuation of the high frequencies due to self-erasure (which is due to this kind of 'over-cutting' you mention)... It is sometimes called an effect of 'diameter loss'. Whereas, it's specifically the loss of land speed sufficient to get the disk area that's being cut fast enough out of the (fixèd) stylus's way. If the platter would spin faster as we got to the end of side, it might be fast enough to mitigate this. Using a stylus with a smaller back-angle, as was developed for DMM cuts, can also preclude (unwanted, automatic) self-erasure of short wavelengths at the end of the side, as well.

This is great, thanks so much for this