[Solved] Case Mods - Cutting holes for cable management!

Ok, so i used a dremel to cut out some holes in my motherboard tray for cable management. I've scoured the interwebs for information on this...and ive come to 2 conclusions for dealing with sharp edges:

1) Sand/file down rough edges of the holes you cut to protect cables

or

2) Use rubber trim/grommet/molding to line the inner edge of the holes to protect the cables.

I WANT to use option 2.

I have found 2 places so far that sell trim:

http://www.crazypc.com/products/83010.html

http://www.frozencpu.com/products/5096

The problem:

The motherboard tray metal is about 1/32", or 1mm thick....and these moldings are proooobably too wide on their inner edge.

Does anyone have any suggestions on what i can do?

I also cant seem to find any of these at any local hardware stores...which seems weird.

Thanks

Is this what you did? I know there's people out there who have done this before...im just curious what they did.

The molding at crazypc says the inner measurement is 1/8", and the metal is 1/32". thats quite a bit thinner than the molding.

However, the molding at frozencpu doesnt mention any measurements, but it does say SLIM.

assuming they're both 1/8", you're positive itll stay on metal 1/32" thick? i guess if worst case i can maybe fill the molding with hot glue and put it on..?

Might be a couple of misunderstandings.

The 1/8th inch you mention is the "depth" of the interior space. In other words, starting at the edge of the metal, the molding would cover 1/8th inch of the metal. It's just telling you how much of the metal will be covered up. Also, if you click to enlarge the photos, you'll see that the molding looks like it's closed and you only see a slit on the end. They all come like that. That's why I mentioned using a small screwdriver or putty knife to spread it open to get things started.

Also, the molding at crazypc.com has the inside lined with adhesive to securely fix the trim to the sheet metal:

http://www.crazypc.com/products/83010.html

In fact, now that I think about it I even used that one for one of the case mods I did. That makes three different ones I've used and they all worked well. Some molding is rubber and some molding is flexible plastic. The rubber is flat black and the plastic has a shine to it.

Unfortunately I am growing old disgracefully and I forget stuff.