MCADCafe Weekly Review July 28th, 2016

All 3D printers need host software to function. That’s a given. Host software sends the commands to a 3D printer that tells the printer how to build an object. Most host software communicates with the printer via a wired USB connection. For almost all 3D printers, a computer running the host software must stay tethered to the 3D printer at all times while it is running. Obviously, this is not always a great situation, hence the advantage of being wireless.

There are basically two ways to perform wireless 3D printing. First, a G-code file can be saved onto an SD card using a computer, then the SD card can be transferred to the 3D printer where the print job is initiated via a controller into a 3D printer.

This arrangement allows wireless 3D printing, but it lacks most the advantages of a truly wireless setup. The 3D printer can still be placed away from a work area, but beyond that, using the SD card transfer method is really no different than transferring data over a cable. The second way to do (truly) wireless 3D printing is by running the host software on a small embedded device, like the Raspberry Pi, that is connected to the 3D printer.

Which Is Better, OctoPrint or AstroPrint?

This is analogous to using a dedicated computer for 3D printing that stays connected to the printer at all times. But, instead of using a computer for this purpose, the host software can be run on something, such as a Raspberry Pi, which is just powerful enough to run the software.

The two most popular host software packages developed for wireless 3D printing are OctoPrint and AstroPrint. AstroPrint is, in fact, based on OctoPrint, and claims to have an optimized codebase for running on embedded computers. The AstroPrint team has made changes and additions to the software, making the two host software offerings quite a bit different in many ways.

While OctoPrint and AstroPrint do share some similarities, they are also different, primarily with regard to their intended users.

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