Lab Machines

Lab Machines is an ongoing project of the Design for Craft’s team for the digital manufacturing.


It’s an utomatic smoothing machine for 3D printed objects. The prototype turns the traditional industrial “tumbling”, useful for mechanical removal of residues due to processes such as casting and molding, in a desktop manufacturing machine.
The SMOOTHBOT can be self-built through a kit to be assembled or ready for use in the full version already assembled. The open-source files of the external framework and some internal components will be downloaded directly from the official website and fabricated with 3D printers and laser cut. It ‘a machine designed for Makers and FabLab, useful for workshops on digital manufacturing and post-print finishing.
The aim is to transform a 3D printed prototype in a final product through the finishing.




In our work about the world of digital fabrication we have been requested to develop innovative processes for the additive manufactoring. So we focused the need to feed the machine with materials and devices with heavy weight and high volumes. These can not be integrated in the most common types of 3D printers, in which the extruder has at least two degrees of freedom. The only way is to use the system of Bowden, this is not always possible or appropriate. Then the project’s goal is to manage innovative printing processes and different tools thanks to the kinematic of the extruder, only constrained to the z axis.


The project want to achieve different solutions for 3D printing, FDM and more…

IMG_3157.JPGThe extruder could be fed by the common filament in spool, as it’s usual for the most of the 3d printers on the market.
IMG_3156.JPGIf you want it’s possible to use the Stick Filament‘s system, a format that enables the use of many innovative materials thanks to the production process of injection molding


IMG_3158.JPGIn addition, the JOHNNY allows a good supply for the pellets extrusion process, providing greater economy and freedom in the choice of materials to be used for manufacturing.
IMG_3155.JPGWhat’s more, the JOHNNY makes it easy to make 3d prints with the cold extrusion technique, also using with heavy materials, allowing a good printing accuracy.

We are currently working on the development of this 3d printer that, in this moment, is a prototype. This kind of machine has its own behavior, quite different from other 3d printer so we are testing it with different solutions both for the components than for the software of the Arduino Mega 2560 board.

We’ll update this page for further information on this project. Keep in touch with us if you are interested.




LAYER RESOLUTION: up to 10 micron


NOOZLE SIZE: 0,35 mm and 0,50 mm



BUILD VOLUME: 200*200*250 mm

FILAMENT DIAMETER: 0,3 mm and 1,75 mm

X and Y MOVEMENTS: recirculating ball bearings

Z MOVEMENTS: 2 rails with 2 precision sliders moved by a screw with an aluminum profile support



Jonathan Soldini: Hardware Engineering

Vincenzo Franchino: CAD design