Valentine’s Day is about a month away, long enough for everyone to
butcher upgrade their 3D printers to squirt out chocolate. Food printing was a hot item at this year’s CES, but it is hardly new. Before many of you were born [Hans] left his job at the Council for Scientific and Industrial Research to produce chocolate out of his garage in South Africa. This one prints 8 at a time!
Many years before he was extruding lawnmowers from raw pellets, [Hans] built the 8-tentacled Choctopus. He gets away with using only one chocolate pump – from some experience, by far the most challenging component – by simply splitting the ooze pipe with three tiers of T intersections. The whole design is actually patented and revolutionary for 19 years ago but to our readers probably unremarkable.
There is a business lesson here too. Once upon a time the Choctopus was a 3D printer but economic constraints have led to him downgrading to 2D. Any 3D requirements are served from an alternate RepRap. The purpose of an 8-armed printer is to mass produce, but for the price, most clients were only interested in a one-off. The products that pay the bills are the much more affordable 2d extrusions in bulk.
Any of our readers looking to
impress their date make lots of money next month, consider this the kick in your pants to get started.
Check out these videos of the Choctopus churning out delicious delicatessens.
Continue reading “Choctopus Chocolate Printer x8″
With the advancements in quadrotor parts and technology over the years, it’s become possible to make just about anything fly if you can strap some high-speed rotors to it. Introducing the first edible quadrotor!
[Michael] enjoys building and flying quadrotors. His girlfriend enjoys baking and making chocolates. One day she had a crazy idea — what if they made a quadrotor together, combining their unique skill sets? [Michael] was a bit skeptical at first. After all, chocolate doesn’t really compare to aluminum or carbon for a frame material… and chocolate melts at room temperature. Regardless — they were curious enough to try it out and see for sure.
First they built a wooden prototype and then created a silicone mold from it. Using Styrofoam and metal spacers for the electronics mounts they filled the mold with chocolate and let it set. A bit of assembly later and they had a chocolate quadrotor. It flies too.
Continue reading “Chocolate Quadrotor Proves You Can Make Anything Fly”
We think in might be absurdly vain, but wouldn’t it be fun to give everyone in your family a chocolate modeled after your mug this holiday season? [Eok.gnah] has already worked out a system to make this possible. It consists of three parts: scanning your head and building a 3D model from it, using that model to print a mold, and molding the chocolate itself.
He used 123D to scan his face. No mention of hardware but this face scanning rig would be perfect for it. He then cleaned up the input and used it to make a mold model by subtracting his face from a cube in OpenSCAD. That needs to be sliced into layers for the 3D printer, and he used the Slic3r program which has been gaining popularity. Finally the mold was printed and the face was cast with molten chocolate. We’d suggest using a random orbital sander (without sand paper) to vibrate the bottom of the mold. This would have helped to evacuate the bubble that messed up his nose.
You know, it doesn’t have to be your face. It could be another body part, even an internal one… like your brain!
Chocolate has got to be one of the worst choices as a printing medium. It’s extremely fussy when it comes to melting point, and even in the right state the flow of the material is not going to play nicely with high-resolution designs. With this in mind, we applaud the progress the student team from Carnegie Mellon University has made with WonkaBot, their chocolate extrusion printer.
Unlike the syringe-based paste extruder from last month, this offering uses an auger to push chocolate through a heated printer head. They’re using it to print designs on graham crackers. We love the UI they came up with for the task. It uses a virtual graham cracker as a canvas on your laptop and allows you to use the touchpad or mouse to draw your design. That input is then converted to g-code and sent to the CNC machine for printing. See it in action after the break.
Continue reading “Chocolate extrusion printer is halfway to making s’mores”
With a glut of Easter candy acquired over the last week, you might be thinking what to do with mountains of chocolate and other sugary delights. How about sending them through a 3D printer with [RichRap]’s universal paste extruder?
[RichRap]’s extruder uses a common 10cc syringes slowly squeezed by an off-the-shelf stepper motor. Chocolate wasn’t the only goal for this build; [RichRap] also tested out cake icing, corn chip dough, muffin and sponge cake batter with his new toy. The most interesting paste in our humble opinion is porcelain ceramic clay. [RichRap] was able to make some very nice 3D printed greenware, but we’ll withhold our judgement until the ceramic parts are fired later this week.
After the break you can check out the introduction video for the Universal Paste Extruder, as well as a quick glimpse of [RichRap]’s very cool porcelain clay prints. We’re very interested in the ceramics printed with this extruder, if only for printing reprap parts that will be exposed to plastic-melting temperatures. Of course, all the files to build your own paste extruder are up on Thingiverse.
Tip ‘o the hat to [Josef Prusa] for sending this one in.
Continue reading “Print in chocolate, sugar, and clay with a universal paste extruder”
If you’ve never felt at home with a piping bag in your hands this chocolate extruder will come to your rescue. It can replace the plastic extruder head on your 3D printer (RepRap, Makerbot, most 3-axis CNC machines, etc.), letting you turn your digital creations into decadent reality.
The head uses a progressive cavity pump to feed the chocolate from a reservoir through the printing nozzle. It’s important to keep the chocolate warm or it will set up so when [Tomi Salo] designed the print head he included a heat shroud through which warm air can be circulated. He uses a shoe dryer to source the hot hair which is patched into the heat shroud with a length of tubing.
This extruder can be 3D printed but be careful what material you use. [Tomi] mentions that PLA is ‘sort of food-safe’ but ABS is not. We wonder if the design could be altered for milling out of aluminum or stainless? At any rate, if you’re going to give it a try you might find [Tomi’s] advice on working with chocolate useful.
[StudioJooj] is trying to torture or test his colleagues in his office. A lot of folks leave a candy jar on their desks for all to enjoy but he’s making his friends work for their reward. Like cubicle-dwelling lab subjects, they must successfully navigate his maze to be rewarded with chocolate. The game piece is an amazingly orb-like peanut M&M candy. The maze is constructed from plywood and moves on two axis with the help of a couple of servos. The user interface includes a couple of NES console buttons to release the game piece and a PS2 joystick to control the maze. [StudioJooj] was nice enough to include a music video in his project clip.
We wonder the M&Ms will disappear faster or slower than they would from a candy jar.