The open-source Lemontron 3D printer just arrived, complete with all its build files and documentation. It's got a unique upside-down printing setup and costs around $413 for all the parts. Think of it as a spiritual successor to the 2021 Positron printer.
The design's goal is to make it easy for people to get the parts, mostly from standard suppliers like AliExpress and DigiKey. KB-3D provides the hot end and heated bed, and you'll also need a custom PCB. The frame itself is entirely made of 3D-printed pieces, which you'll have to print out before putting everything together.
Even though the Lemontron prints upside-down, the creator says gravity doesn't do much to mess up how things print. The filament solidifies nearly instantly, no matter how it's oriented. The printer still uses good old layer-by-layer printing logic, but its flipped-around design helps make it more portable than regular models.
While its roughly $413 price tag undercuts many other DIY printers (which usually start at about $699), it's not exactly aimed at beginners because you need another 3D printer to make all the necessary parts. So, it's probably best as a second printer for most people.
The project has thorough documentation with video tutorials and written guides, so builders should be able to assemble the printer without too much trouble.
Source(s)
Hackaday (in English)