How To Screw Up Your Brand New $70 Case with only $5 of Spray Foam

.

I got a new ATX case and added a big old heatsink with two fans to my CPU.

Sure was loud.

I couldn’t sleep with that racket so I decided to do something about it.

I went down to my friendly Home Depot where I couldn’t find anyone, so I wandered around the 2.5 square mile store looking for something to insulate my case. Foam, rubber, cardboard, anything!

I finally stumbled upon spray foam. I was thinking like “Sweet! This will be perfect!

So I get it home and rip my case sides and front panel off. Time to go to work.

I laid my case sides on the ground and began making back-and-forth motions with the foam. Of course, it left big gaps and didn’t always meet up. So I finished the first side, put the foam down, and grabbed a piece of metal to smooth some of this stuff out.

I go to flatten the stuff out and it just disappears on me. The stuff is thick, thick sticky soap foam when it’s wet; but it just dissolves beneath what ever you touch it with. So now I end up with big sections that are connected, but really flat.

I thought, “Aww, screw it. I’ll just flatten this whole section and go over it again with more foam.”

So I did that side and the other. I also filled up all the gaps in my front panel.

After that I went to wash my hands. Holy cow, is this stuff sticky! I tried using soap, dish soap, shampoo, and gasoline; this stuff would not come off. Not only that but I ended up with it covering both my hands because I was rubbing them as I washed them.

On the other hand, I played a really good game of Quake3 because my hand was stuck to my mouse.

I checked on the panels about 1 hour later. The stuff was partially dry, so I flattened some of it out more. This works much better than trying to do it when it’s wet.

I waited a little longer then I decided to try it. Well, getting the front cover on was pretty tough because the foam expanded. I figured it would all expand upwards, not outwards, which is defiantly not true.

I ended up cutting chunks out and found that the inside was rather gooey. Once again, I ended up with sticky stuff all over my hands, but I finally got the front cover on.

I had to take a break after that ordeal, and my GF ended up coming over and started to play the Sims.

I decided to put the panels back on my case. I grab a side and start putting it on when the PC locks up. I figured it was just acting like it always does, so get the side on (with some more work) and reboot. No Windows.

“Aww, crap!” so I take the side off, fearing that I would never play Q3 again. Windows boots right up. What the heck?

I take a pencil and scribble the lead all over the high points of the inside of my case and put the side back on again. I take it off and I see two marks where it is touching.

So once again I whip out my handy Swiss Army knife and begin cutting, except that the part where they’re touching is the part that I dissolved and re-foamed. I find out that the dissolved part becomes extremely hard when dried and that I must remove a large patch of it.

So after 30mins of struggling and leaving tiny pieces of foam all over my room as battle evidence (they’re still living here, damnit!), I finally get all of it off and put it on.

Now for the other side. I begin to put it on and once again Windows locks up. I look at that side, and I have to flatten a small bump, no problem. So I flatten it and try to attach the side to my PC.

I can’t get it on. What the heck. I fought with this side, too. Guess I bent it. Finally, after 20 mins of swearing and struggling I get the side on. Windows won’t boot. @#$%&*#@$%*.

So I pull the side off and say “Time for bed.”

(Big mistake).

I wake up the next day and to remove the stuff and find that it has hardened quite a bit. * sigh * Forty five minutes, more foam bits everywhere but on the case. Finally get the side on only to notice I made a nice wrinkle in the sheet metal. More time. Finally, my PC is whole again.

I run the thing for a day or two, then I need to change a drive. I take the case sides off and I notice that I have to yank to get the side with the foam off. * sigh*

I also have to pull the front of the case off. I add the HD and I try and put the PC back together only to find out that the front will wont fit back on because the plastic is narrower than my CD-Rom drive. So after 20 mins of hacking the front goes back on, in much worse condition.

I grab the side and it does not fit at all. I bend it this way and that to no avail. Finally a brief flash of non-stupidity hits me, and I realize that the foam has expanded sideways slightly stretching the metal.

Once again I grab the trusty knife. Once again the foam is even harder because it has been cooked by the heat of my system. I cut a big cross out of the foam, allowing for the metal to flex and to be stretched.

Finally my PC is whole. Then I notice something

Remember why I started this in the first place? The noise? It’s barely decreased.

I now have one side so warped it looks like a sine wave where it meets the other piece, one side covered with foam residue and remaining crap, and a front piece that is a tight fit, but is very solid. Very, very solid. Maybe I can sell this as modern art.

Spray foam is a bad idea for case customizing. It holds static electricity. It expands whether you want it to or not. Spray foam, bad.

Email David Craig


  1. Foam and Flame
  2. Carbon Foam Waterblock
  3. Copper Foam Heatsink II
  4. Copper Foam Heatsink
  5. Brand-Name-On-The-Brain

Tags: