by MakerBot, published
The way it works is pretty simple: The frostruder is basically a syringe connected to a pressure source, typically an air compressor. There are two solenoid valves to control the pressure: a 'Pressure' and a 'Relief' valve. When the Pressure valve is on, the syringe is connected to the main pressure source and that pressure forces out whatever paste material is in the syringe. When you wish to stop the extrusion, the Pressure valve is closed, and the Relief valve is opened. This part is critical because even after the Pressure valve is closed, the syringe is still pressurized. By opening the relief valve, the pressure is released and the Frostruder stops extruding almost immediately.
The frostruder is capable of extruding nearly anything with a paste-like consistency. There are many materials to possible, from food based items to awesome engineering resins. So far, we've had success extruding the following materials:
* Peanut butter (creamy)
* Jelly / Jam
Recent Commentsview all
I've been looking around a lot, and I haven't seen any good photos of a finished item with extruded frosting. The photos posted here look like failed prints.
Lately I have been inspired by project Shellter and have been burning ideas on my heated build platform of a brain. I would like to experiment with the frostruder and try out plaster, clay or even ceramic based materials. I was hoping to find the original frostruder some where, but I guess there are reasons for the MK2 successor. I can't justify the costs at the moment, but maybe this could be a good project to laser at my hacker space. I also have a few other projects on hand too, so this may be on the burner for a bit...
I just cut one of these out in order to modify it to fit an alternate variety of pneumatic relay (still 100 psi and 12V) - I'll post the mods as a derivative once I get the back and sides suitable modded.
In the meantime, here's a tip to anyone who makes one of these from these DXF files... it's mentioned in the assembly instructions on the Makerbot blog, but the mounting holes for the Extruder Controller are ever so slightly off. You'll want to check the four 3mm holes and shift a pair of them a
fraction of a millimeter or you'll have some drilling/filing to do after the cut.
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