smallest pocket 3D pirnter in the world.Adopt low lead 15mm step screw, 0.2mm nozzle, print size 45mm45mm40mm, the debugging accuracy should be able to kill a thousand yuan machine in a second.
You are welcome to put forward better Suggestions.
firmwarehttps://github.com/mossbot-MG/mini-one-pocket-3D-printer-firmware
solidworks  drawinghttps://grabcad.com/library/mini-one-pocket-3d-printer-1
I will update tutorial and firmware later,Welcome to attention.
QQ交流群791947714
中文教程https://www.arduino.cn/thread-90256-1-1.html

This is Cherry, a 60€-3D-Printer.  
Buildsize: 10x10x10cm
Speed. 20mm/s
Resolution: 0.2mm (tested)  
If you want to find out more about this printer, please visit my instructables site  
http://www.instructables.com/id/Cherry-60-3D-Printer/

It is recommended to use the CoreXY version with Nema17 stepper motors instead of the H-Bot as the speed and quality is significantly better.
Link to MicroCube CXY:https://www.thingiverse.com/thing:3222004
The MicroCube is a small, inexpensive 3D printer, designed around the cheap 28BYJ-48 stepper motors (files for Nema17 included except Z axis). The structure of the printer is based on an exoskeleton, which also serves as the smooth rods for the y-axis. The printer type is an H-bot style printer using a fishing line. In order to provide enough torque for the extruder, two steppers are used in series (or single Nema17 version). Due to the limitations of the 28BYJ-48 steppers, the precision is limited as well as the print speed (2-3 times slower than a standard printer).
Video of print: https://youtu.be/JlPdN9ktdqY
Features:
Low cost ~100€
Easy to build
Printable Area of 120mm x 115mm x 95mm
Small footprint 220mm x 220mm
Low noise during print (with 28BYJ-48 steppers ~50dB, with Nema17 ~60dB)
Upgradeable with…