[David Paule]

If you leave blue tape on a part too long, it'll leave a hard residue and tear when you try to remove it.

It's not temporary forever. I verified that experimentally. Only thing is, it wasn't an intentional experiment.

Goof-Off removes it.

How long is too long? If it tears and leaves some stuff, well, that was too long.

Dave

 

[rv12iS-builder]

Scotch says up to 14 days on their web site, but l've left it on metal much longer than that. I recently removed some that had been on a squeezer yoke for years with no problems.

 

[Canadian_JOY]

It depends on which tape you buy... Don't buy the stuff that comes on the orange cardboard rollers - that stuff is NOT removable after more than a few days or weeks. Buy the 3M tape on the white cardboard roller. It is removable for a long, long time. I have some that's been in place a full 10 years and is removable without leaving residue.