cutting up a case

[modmansage]

I found an old k9 computer at work that we took apart (k9=233mhz amd for those of us born in the 90's) and i decided to take the case home and use parts from it to help me build my new case.
I'm planning on cutting up the side panels and using the shapes cut up as decor on my sides.
I'm curious, do you recommend cut then sand/polish or vice-versa?
these will also be put on a black background and i'm wondering if anyone has done this before and could post some pics, I haven't decided if i want to do a mirror finish or not yet.

[Bucko]

Cut them first, then sand and polish. When you cut it, it will leave a burred edge which you will need to smooth.
It doesn't matter what you use to cut it as far as home tools go (hacksaw, dremel, jigsaw, angle grinder etc.) the edge isn't completely smooth and is generally rough.

[moon111]

I've also cut about 1/4 less, then bent the excess over. If you give it a 90 degree bend first, you can put stiff wire (like coat hanger) along the edge and roll the metal over it to. It all depends on the application. Unless it's for looks, I'll aways try to roll before cutting and polishing. Another solution can be to put something on the edge, like the stuff you buy for the edge of a car door to prevent it from chipping.

When I cut out a shape, I try to use a 1/4 grinder as much as possible. Of course you have to remember it can heat metal up fast... warping and burning paint. You can also cut too much really easy. But I still like using the 1/4 grinder, even if it's just for relief cuts, then trimming up with a dremel.

[moon111]

I've also cut about 1/4 less, then bent the excess over. If you give it a 90 degree bend first, you can put stiff wire (like coat hanger) along the edge and roll the metal over it to. It all depends on the application. Unless it's for looks, I'll aways try to roll before cutting and polishing. Another solution can be to put something on the edge, like the stuff you buy for the edge of a car door to prevent it from chipping.

When I cut out a shape, I try to use a 1/4 grinder as much as possible. Of course you have to remember it can heat metal up fast... warping and burning paint. You can also cut too much really easy. But I still like using the 1/4 grinder, even if it's just for relief cuts, then trimming up with a dremel.