As this is going to be a small run, the master will be cut out of polyurethane foam, with the actual mould being made from two-part silicone rubber. There are some advantages to milling prototype small runs in foam, one of the most prominent being speed. In foam, the rough pass to remove excess stock and the detail pass to finish the model can usually be done at the maximum speed of the mill without sacrificing transit speed. So let's get our polyurethane foam mounted and start the job! ...

• -Build Your Own (Physical) 3D Models

While the concept of using foam and rubber seals to help cut down the noise isn't a new concept (case modders have been using stuff like Dynamat to help absorb the noise for some time), it is only now that we are just starting to see tier one companies incorporating this type of technology into their off-the-shelf cases. How much does all of this foam and rubber affect the cooling of the case? A close up of the foam that Lian Li is using on the side panels of the PC-6070A to help sound proof the case....

These cabinets have thick foam inside to dampen the noise. Cables are routed through foam in the back of the cabinet. Dust is naturally filtered out by the foam....

They're colour-coded; a small red dot for right, a small blue dot for left, which makes them easier to tell apart in low light than if Westone had used letters like L and R. The unusual Comply tips are a good mix of acoustic foam and curves. They're made of memory foam that adapts snugly to the shape of your ears, but instead of a plain cylinder it's shaped like the curved soft rubber tips common on other headphones. We found the UM1s a little tricky to position, especially because you need to compress the foam before you insert them and then hold them in place; you may find yourself fiddling with them until you get the knack - or switching to eartips that fit you better....

The SR209 has a foam dust filter that covers the bottom air intake. Foam dust filter Conclusion Although meant for the entry-level workstation or server market, this case would perform quite well for the home user and the hard-core gamer....

Integrated 350W power supply Installed 120mm fan with dust filter Preinstalled foam blocks Cons Little room for hard drives Non-isolated drives Sharp case edges Exposed front ports First drive bay with CD/DVD opening Foam blocks for noise reduction In the box: power supply with 120mm case fan ...