lathe cutting tricks

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walters

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i like to layer my groove cuts so when i put the needle down on my record it plays different songs or may start a different song as the needle is moving to a different groove cut only a master on a lathe can do this

How do u put different songs or make the groove cut have different songs

Or by SPLITTING the groove cut so if the needle goes one way its song#1 if it goes the other way its song#2 like a folk in the road?
 
For only three easy payments of 19.99, I can get you a ginsu blade cutter that will make the groove cut have different songs. My dad, a policeman, once seen this work on a penny by SPLITTING the groove cut so if da needle goes one way its song#1 and using the nail(a three penny) cutter, the usnig, it goes the other way for its song#2 like a folk in the road, not bad for a copper.
He had always wanted to layer but couldn't find her, sorry let's not talk about mom. All she could cut was the rug.
 
You ever hear the "rule of three" and "always leave them wanting more", wally?

G.
 
SouthSIDE Glen said:
You ever hear the "rule of three" and "always leave them wanting more", wally?

G.
Click to expand...
I guess I messed that rule up for myself...I posted 4 links. :D
 
The first thing you need to consider is the TPI, which has a direct relation to the pitch of the thread. This is very important because you need to calculate precisely the way the gear train and half nut will interact with the thread dial for determining your starts. eg. for a 4 start thread, you might be able to locate 4 equally spaced positions on the dial that will infact cut 4 distinct equally spaced starts on the thread. But wait: not always. For certain threads, it won't work. you might only get 2 distinct starts, or none, or whatever, as decided by the pitch of the threading leadscrew compared to the pitch of the thread you're trying to cut.

A simple way around it would be to leave the half nut engaged and cut one thread to the required depth and then adjust the compound by the required pitch to cut the next thread. Obviously, you'd have to move the Z axis by reversing the spindle after retracting the tool off of the part on the X axis.

There's a bit more to it than that, but it all has to do with cutting screw threads on an engine lathe. The theory is simple enough to adapt for cutting on the X axis rather than the Z axis, but I've never, ever heard of multistart vinyl before, which leads me to believe that you, walters, are a fucking asshole.


I hope this helps,

sl
 
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