(Tool Related) Hide object to click through it?

Hello everyone, I’m a new member here but not a new GMod player. I’ve become quite a skilled builder but there is one thing I have always been curious about.

Instead of deleting an object or moving it to get to the object behind it (say if I’m welding, using Axis, Motor, Precision, etc) how can I hide the outward object so it will be counted as “not there” so I can use my toolgun on the object behind it? I get some complex contraptions and I’m also a freak when it comes to getting objects perfectly lined up, so getting to some of those covered-up objects can be a pain.

I know 3DS Max has an option to hide sub-objects and even separate faces, but GMod isn’t 3DS Max. XD