EDIT: Measurements are as follows: Black hinge = 32mm, Peg = 2.5 mm long, 1 mm thick. this means a breaking angle of 21.8 degrees. The figures have been adjusted below. What does this mean? Well, it means it's even EASIER to break than i first thought. That's not exactly a comforting thought. I'm working on the computer version of the actual math which i'll upload when i'm done, just incase anyone's still skeptical. (See "EDIT 2") Okay, seriously, I've been experimenting with Sandstorm recently, and I've loved the rear hinged roll cage. It's great for making working toy gimmicks, such as flippers, axes, anything that needs a hinge it's great for. But there's one slight issue I have found, and that is with the rear wheel connection points. This problem has nothing to do with Kitbashing AT ALL. The mold itself, by design, is flawed and cursed to breaking. I didn't do anything at all stressful with mine that a normal kid wouldn't. Just regular play wear. (Image originally from the Moonbase blog, edited with Adobe Ideas for illustrative/demonstration purposes) Put your Sandstorm into vehicle mode. Go to it's rear wheels, and pull outwards. That will unlock its wheels from the body. The attachment point here, is a thin rectangular peg on the inside of the robot arm, which corresponds to the rectangular hole in the main torso. The problem with this peg, however, lies not in it's shape, but rather its proportions. The fact that it is longer (protrudes 2.5mm) than it is thick (1mm) means that the longest line one can draw from vertex to vertex on the side, is at an angle of 21.8 degrees. That means, any push past that angle (which is VERY slight, you'll push it past just transforming the figure) will stress the plastic there, and over time (ive had mine for two weeks), the joint will break. It's important to note here, that it's not a sudden snap sort of break. It's a gradual weakening, and then it will TEAR. You will quite literally rip the peg clean off, believe me, I watched both joints on mine tear apart. So, you might be wondering: "if I pull straight, then I won't push it past 21.8 degrees, and I'll be fine". WRONG. You see, the shoulder ball joint, which the arm is connected to, is the one fatal link. Due to it being diagonally DOWN from the peg, the peg will have to swing down to get out of the hole, due to it being connected to the shoulder. You can be as careful as you want, but it will stress every time you use it. The downwards component of the vector joining the peg to the ball joint pushes the peg past the 21.8 degrees angle, and hence it is not possible, to the best of my Maths, to safeguard this joint from breaking if you transform the figure at all often. So, anyone else have this problem? I'd post pics, but mine is being used for a certain event near my area (school engineering project, to be precise), and hence kept secret for the time being. I have a second Sandstorm, which I bought two days ago. As soon as that breaks, I'll post pics of that. Not that that will take long at all. For the record, mine has broken on both sides, no excessive play wear, just regular play wear as a kid would (I do count as a kid, actually), and ive looked at the build with the extent of my high school 3D vector space and engineering knowledge. I'm also a toy designer, having sold models designed from scratch, on these boards, so I am used to designing joints in toys. I'd be very surprised if I'm the only one who has had this happen to them. EDIT 2: The maths has been done: Turns out Hasbro has pulled this one way to close, but not yet past it. The maths was done assuming an ideal world, if you were to be a perfect person who made no mistakes. The result is this: Breaking Angle: 21.8 degrees Forced Angle (of Transformation): 19.91 degrees (to 2 decimal places) Tolerance Angle = Breaking - Forced = 1.809 degrees. > 0 degrees. This means, that if you are a perfect person, you will not break the joint even if you use it over and over and over again. Note, i said PERFECT person. I.e. If you were a robot in an IDEAL world, then the joint works. So, what happens to real people, in the real world? Well, what happens is that each time you pull it out, you have to transform it within 1.89 degrees of PERFECTION. In case you don't know how much 1.809 degrees is, the blade of a kitchen knife is MORE than 1.809 degrees. In other words, to avoid breaking the joint, you need to pull it in such a way as to be within (literally) a Knife's Edge from perfection. If you can do that repeatedly, good on you. But no kid, nor collector, nor anyone can pull a joint within 1.809 degrees of perfection repeatedly. No way. And as i was measuring my toy, another stress mark appeared. Just from measuring the toy. The joint will break, no matter how careful you are. Here's the maths for it, done on my iPad with a crapload of trigonometry. Anyone want to challenge my math, go ahead, i'm just a high school student. But i'm pretty damn sure, tolerance is 1.8 to 1.9 degrees.