I've got you beat, for my first couple of weeks to a month when I started HVAC at 18,
I got by with one of these: $2.50 retractable snap-off razor
With this knife I: cut duct loose from air handlers, cut flex to length when running duct, stripped wire, trimmed grapefruit and over hanging twigs from my boss' citrus trees, opened packages,
cleaned my fingernails, peeled an apple, cleaned a couple squirrels and a few mullet, trimmed drywall to fit electrical boxes, cut insulation for refrigerant lines, cut paint/ calk from door frames to AC closets,
trimmed paint from old thermostats, etc. etc. etc.
The point is, I was apprenticing/ helping two trades with nothing but this knife when I started. I found a way to get by doing most if not all the cutting tasks required for an apprenticing electrician and/ or HVAC Tech with this piece of crap thing.
However, these days, the good folks on Blade Forums, myself included, still got you beat with quality steel, most of it American.
Don't be comin' around here peddling junk, it isn't appreciated. Most of us are skilled knife users that could cut just about whatever with just about whatever knife. That's hardly the point though when you appreciate quality tools that somehow just make ya feel good... Not to mention they are produced by hardworking Americans just like us busting their tail everyday to meet deadlines and produce a quality product.
Now days I "get by" with blades like these:
I'll give you some advice my boss gave me

: "You oughta get ya some good ole American tools. They'll last longer, they're easier on your hands, they'll help you produce better work, and... you look kind of dumb
to guys that know what they're doin'

with a cheap tool pouch over-filled with Chinese made junk.


You've got more tools than you need and they're all junk.


"
He always jokes that a good electrician shouldn't need to carry much more than Side-cutters (linesman pliers), a skinning knife, a flat-head screwdriver, and a volt meter on 'em

Maybe a nut driver if you're workin' on ACs....
