Hi All
We have a client who wants a record cut which will play continuously from start to finish. ie like a locked groove but returning to the outside of the record and starting again. Is this even possible?
Andy
Vinyl Factory Australia.
Continuously playing cut
Moderators: piaptk, tragwag, Steve E., Aussie0zborn
yes it is possible ,when on returning the groove into the other groove spaced between.but the loop at the end is not a loop it just sits in the space of the forward groove on return to the outside..you also need to change the direction of the motor(head) just as it hits the end so it almost loops and there is no over lap. also one groove is spaced more than the other to fit inside..
come on you guys you should know this...
come on you guys you should know this...-
leo gonzalez
- Posts: 133
- Joined: Mon Sep 08, 2008 11:37 pm
it is possible. difficult but possible.
it can be done on a scully, but it's very difficult. lot's of luck involved.
while cutting, you can switch to the inside-out feed screw. problem is that when you disengage, you have a moment where the carriage is left to travel free. at that point you can easily have overcuts or locked grooves.
another issue is that when you re-engage to the screw, the guides on the carriage bite into the screw's teeth. so that can cause a little displacement.
you could also be very lucky and have both teeth snap perfectly into each other.
i think that a feedscrew ran by a dc motor at a constant feed would be the way to go. you just need to invert it's polarity whenever you want to go in the opposite direction. then pretty much pray at that point you're not cutting over the preceding grooves, ha!
L.
it can be done on a scully, but it's very difficult. lot's of luck involved.
while cutting, you can switch to the inside-out feed screw. problem is that when you disengage, you have a moment where the carriage is left to travel free. at that point you can easily have overcuts or locked grooves.
another issue is that when you re-engage to the screw, the guides on the carriage bite into the screw's teeth. so that can cause a little displacement.
you could also be very lucky and have both teeth snap perfectly into each other.
i think that a feedscrew ran by a dc motor at a constant feed would be the way to go. you just need to invert it's polarity whenever you want to go in the opposite direction. then pretty much pray at that point you're not cutting over the preceding grooves, ha!
L.
Ok- This is impossible to do for 2 reasons.
1. Cutting: Simply reversing the feed screw at the "turnaround point" would result in eminant overcut of the outside-in part of the groove. One would need to reverse the direction of the platter at the same exact time, and turn the stylus around 180 to meet the now backwards running record!!
Let's say Piaptk and Mossy cut this in the underground mastering cave on Lathe Troll Island......
2. Playback: It would not play past the turnaround point without reversing the turntable direction at that point....rocks don't roll up hill.
That's my 2 cents
Kris
"Prove me wrong kids, prove me wrong"
-Seymore Skinner
1. Cutting: Simply reversing the feed screw at the "turnaround point" would result in eminant overcut of the outside-in part of the groove. One would need to reverse the direction of the platter at the same exact time, and turn the stylus around 180 to meet the now backwards running record!!
Let's say Piaptk and Mossy cut this in the underground mastering cave on Lathe Troll Island......
2. Playback: It would not play past the turnaround point without reversing the turntable direction at that point....rocks don't roll up hill.
That's my 2 cents
Kris
"Prove me wrong kids, prove me wrong"
-Seymore Skinner
Hi Kris,
I believe you are correct. I tried to do it using a blank sheet of paper and a pen on my 6N. If you try, you find that the spiral arc curves in the opposite direction on the in-out motion. It will most definitely cut through the out-in sprial. Can anybody point to an example of a disc cut to do this (I don't think so)?
Mark
I believe you are correct. I tried to do it using a blank sheet of paper and a pen on my 6N. If you try, you find that the spiral arc curves in the opposite direction on the in-out motion. It will most definitely cut through the out-in sprial. Can anybody point to an example of a disc cut to do this (I don't think so)?
Mark
I understand that you can cut one groove inside another, but they both have to play in the same direction. An outside to inside groove would be crossed by an inside to outside groove on each turn of the platter as far as I can figure. As stated, this would only work if the direction of the playback platter were reversed at just the right moment. Try drawing this and you'll reach the same conclusion. If I'm wrong then please make a simple drawing of how this could work with a playback turntable only moving in one direction.
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
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
-
leo gonzalez
- Posts: 133
- Joined: Mon Sep 08, 2008 11:37 pm
It would be a nice playback obstacle course then.Kris D wrote:Ok- This is impossible to do for 2 reasons.
1. Cutting: Simply reversing the feed screw at the "turnaround point" would result in eminant overcut of the outside-in part of the groove. One would need to reverse the direction of the platter at the same exact time, and turn the stylus around 180 to meet the now backwards running record!!
Let's say Piaptk and Mossy cut this in the underground mastering cave on Lathe Troll Island......
2. Playback: It would not play past the turnaround point without reversing the turntable direction at that point....rocks don't roll up hill.
That's my 2 cents
Kris
"Prove me wrong kids, prove me wrong"
-Seymore Skinner
ok so its only 2sec for each sample..
but i bust my ass tryin to impress you guys and all i get is nothin thats it i quit ok\..
iam gonna start my own site where everybody loves me and iam my own moderator and all my bloggers get free beer and sexy girls with hairy legs ..
but i bust my ass tryin to impress you guys and all i get is nothin thats it i quit ok\..
iam gonna start my own site where everybody loves me and iam my own moderator and all my bloggers get free beer and sexy girls with hairy legs ..
Last edited by MEGAMIKE on Sun Dec 18, 2011 11:16 am, edited 2 times in total.