As I recall, someone on this list posted a note or a link about how to
create a fusee for a clock (essentially a tapered spiral, running from
large diameter to smaller diameter while spiralling - rather like a
tapered woodscrew thread). Is a constant-diameter version of that what
you had in mind?
https://www.youtube.com/watch?v=KAAajypWQyw
Sadly, I can't remember who contributed that note on this list. I do
think there may be a routine somewhere in the LinuxCNC electronic
resources.
Marcus
On 2024-04-10 06:55, John Dammeyer wrote:
A friend and I have been discussing exactly how to write the G-Code to
create a spiral scroll.
His rotary table 90:1 reduction with a 1600 micro-step motor could be
set up
to move N steps for each step of the X axis to create the spiral. But
that
approach seems clumsy.
Say I wanted to cut a scroll with a 6mm pitch using a 3mm cutter.
Without using G2 or G3 it's really just a triangle isn't it? Move
rotary
table distance A and move X axis distance A'. Do it in small enough
increments and you get a spiral. But I feel like I'm missing something
really simple.
Suggestions?
Thanks
John
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