Here is an Instructable on how to build a DIY chocolate extruder for Ultimaker original. It is based on 20ml syringe with the inner diameter of 20mm. Syringe is covered with aluminum foil, then Kapton tape. The heater is made of NiCr wire coiled on covered syringe and itself covered with Kapton. To get uniform temperature on the syringe a layer is added of aluminum foil and Kapton outside the heater. Thermistor is NTC 100kOhm .
Thomas Sanladerer made this interesting video on 3d Printshow Berlin 2015 about 3d printing food items on a machine developed by FabLab Maastricht. They also involve local chefs and create food silicone molds for food pieces.
XYZPrinting is well known for their Da Vinci machines just released three new machines, Junir with smaller volume, SLA Nobel and Food Printer which extrudes pastes or chocolate and makes food decorations.
Da Vinci Junior technical specifications:
Print Technique: FFF
Printer Size: 42 x 38 x 43 cm
Printer Weight: 12kg
Build Envelope: 15 x 15 x 15 cm
One Touch Setup
Eco friendly power consumption of just 75 watts.
Features: SD card support, HFC technology used to detect low filament, one-year warranty.
Price: 349 USD
Da Vinci Junior 3d printer
Here is video review of Da Vinci Junior:
Nobel 1.0 SLA 3d printer technical specifications:
Print Technique: Stereolithography
Printer Size: 28.2 x 33.7 x 60.5 cm
Printer Weight: 20 lb/9.1 kg
Auto resin refill
Complete cover to ensure dust and pollutants do not spoil the print.
Onboard LED Display of 5” with a Touch Panel.
Connectivity of Device: USB 2.0 , Host/Client , WiFi
Here is a video overview of Nobel. Tests or reviews are not yet available.
XYZPrinting Food 3d printer technical specifications:
Printer Dimension 420 x 427 x 605 mm
Print jets multiple (50-100 cc*3)
Nozzle diameter 1/2/4/8 mm (optional)
Display 5" touch screen
Connectivity USB
Maximum creation size 200 x 150 x 150 mm
Layer thickness 0.8-6.4 mm
Software XYZware
Operating System Win 7/Win 8/Mac OSX 10.8
File Types STL and XYZ format
Price: unknown
Here is a video of food printer in action of extruding chocolate letters on a bread slice:
XYZPrinting also presented some sort of food growing cube with salad growing inside it. Looks like some sort of hydroponics or growth medium desktop / indoor plant growing setup. There are no independent test or reviews of any of those machines yet.
Jonathan Keep is well known for his Delta clay printer. In this video he shows low-tech method to 3d print shapes from chocolate at your home. He made an extruder from a syringe which is air pressure powered from regular soda bottle and bike pump. Ingenious! Looks yummy!
