Do they have a course outline online? Perhaps you could email the
instructor with your questions?
If it's cheap enough I expect you could benefit from it. Even if the
main part of the course covers things you've already learned I expect it
might fill in some gaps, and if the instructor is good they can probably
cover some more advanced stuff for you.
That "if the instructor is good" is the whole question. I had done
this hobby a few years and took a votech class just to get at a
machine I didn't own. Turns out the instructor had worked as a
machinist for 20 years before chucking it to do his real love -
teaching others. He was awesome.
That has been my experience as well in several evening classes at a
local vo-tech school, in each case the instructor had many years of
experience and was either retired, or in some cases was still actively
employed in the field and was teaching for fun and some project money.
Sometimes that sort of thing is worth the time & money even if all you
learn is the language that everyone _else_ in the world uses to describe
what they're doing. Then (for instance) you know to say "spindle"
instead of "round spinny thingie that holds the sharp spinny thingies".
Check on prereqs, would be my advice.
At the local JC, I took a machining class that was a
requirement for the CNC class.
I enjoyed the machining class and learned good stuff,
but never got a roundtuit for the CNC class.
Yes, machining is a prerequisite for CNC since the machining operations
performed on CNC machines and on manual machines are fundamentally
identical. The CNC end is really more about programming than it is about
machining. Iggy should probably be looking for a machining class as well
as a CAD/CAM class if he wants to get the full picture.
Check out the course description and read the syllabus! Maybe pick up
the phone and call the instructor and discuss what you want to get out
I've taken two at two different local community colleges.
Since you already have unlimited access to a CNC machine, have
advanced programming skills, etc., I'm not sure you would have gotten
much from either class, but the second was definitely better (more
independent, you got to program one of about 6 actual machines--- not
always true!) and the instructor was helpful without being intrusive.
It was really self-directed learning. The first was incredibly boring,
as well as involving some tedious trig that I'd not used in decades.
That was my experience as well at a local community college (though
not a machining course). And as a friend of mine used to say,
"Education is like sex & pizza. Even when it's bad, it's still pretty
See my comment below about the quality of teachers, sex & pizza. But
further to that, check with the college about withdrawal & refund
policies. You may be able to get a refund (or at least a partial one)
if, after the first class, you decide it's not for you.