it would be bad for your amp, not guitar.

Epiphone Les Paul Standard
Coming soon: Egnater Tweaker

you would probably wear out the jack if nothing else

if you got lazy and did it wrong, you might mess up the cable.

jacks are a dime a dozen, so unless you figure out how to crack the finish or something, you should be okay
Use the selector switch. Seriously.
Current Gear:
LTD MH-400 with Gotoh GE1996T (EMG 85/60)
PRS SE Custom 24 (Suhr SSH+/SSV)
Ibanez RG3120 Prestige (Dimarzio Titans)
Squier Vintage Modified 70s Jazz V
Audient iD22 interface
Peavey Revalver 4, UAD Friedman BE100/DS40
Adam S3A monitors
Quote by Anonden
You CAN play anything with anything....but some guitars sound right for some things, and not for others. Single coils sound retarded for metal, though those who are apeshit about harpsichord probably beg to differ.
could someone type it out what he's doing? I'm downloading something so I can't view it (wireless internet) almost as bad as dial-up.
"My jedi powers are far more superior than yours"
He's simply putting the jack mostly into the input of his guitar, then pulling it out and putting it back in so it functions as a killswitch. He takes it out and the signal dies, puts it back in and its there. Essentially a homemade killswitch.
Quote by oneblackened
Use the selector switch. Seriously.

Not all of us have 2 volume knobs.. But honestly it is probably a bad idea, if you need a kill switch bad enough they aren't hard to install.