The cost of rapid prototyping machines continues to plummet; the latest is the V-Flash, a $9,900 modeler from 3D Systems. At a desktop-friendly size of 25x26x27 inches, it feature a maximum build size of 7x9x8 inches and will be available later this year. It’s not clear from the website exactly what technology it uses, but it does appear to be a layer deposition process.

I think every Mechanical Engineer I’ve ever talked to would love to have their own CNC milling machine. Unfortunately, their size and expense keeps them out of most cubicle farms. To the delight of all, the sophistication of compact, table top mills is increasing while their prices drop. One of the latest is the Roland MDX-540 SRP pictured here, starting around $19k with a maximum build size of almost 20x16x6″. Desktop Engineering magazine has an in-depth review of this unit, and comes away very impressed. Now, how do I justify buying one…?

I imagine the rivet shown here looks very familiar to most mechanical engineers – at first glance, it looks like a typical metal pop rivet. Upon closer inspection though, you’ll notice the wide head and slotted body; this is an all-plastic expansion rivet designed to be used in similar manners as a pop rivet. It’s a good choice when working with softer materials or where a high clamping force is not needed. I’ve seen flat metal washers used on the back side of riveted joints to help protect the parts from the rivet’s clamping force; a rivet like this would have been a much better choice in that case. They’re made by Fastex.

I’m absolutely hooked on my SpacePilot, the top of the line 3D motion controller from 3Dconnexion. I’m not convinced it increases productivity by the 30% they claim, but I’ve noticed it dramatically reduces fatigue in my hands that alone helps me work longer (which I guess DOES increase productivity!). Still, the $400 price tag makes it a tough leap for many. 3DConnexion now has a very low cost, entry-level navigator if you want to give this style of input control a try. It’s called the SpaceNavigator, and can be had for just $60. You get the same basic 3D control, just no integrated wrist wrest, no LCD, and only two buttons. Still…for the price…this is great and would also be great for traveling.