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SainSmart INFI-20 Belt 3D Printer
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New Workflow for Print Farms & Prop Makers

Easy Setup & Improved Belt Design
The nylon conveyor belt has a specially roughened texture that strengthens the adhesion of the 3D print to its surface; Fixture on both sides of the belt to keep it flat and leveled, reducing the chance of belt slipping or misalignment.
Filament Break Sensor


Leveling Quality of Life Features
- Layer Test feature allows you to run quick tests of the first layer and tweak the belt and nozzle distance accordingly, getting your printer dialed in with ease whether you print in wood composites, PLA, TPU, or more.
- Fixture on both sides of the belt to keep it flat and level, reducing the chance of the belt slipping or misalignment.
- Added scale marks to improve belt leveling precision.
Single Axis Motion


Modern UI & SainSmart Slicer
Wi-Fi Printing

Quality of Life Features

SPECIFICATIONS
Assembly Guide | Bed Leveling |
Firmware Update | Product Review |
Product Review | Product Review |
Filament diameter | 1.75 mm |
3rd party filaments | Yes |
Compatible materials | PLA, PETG |
Print Size | 200 x 180 x ∞ mm |
Molding Technology | FDM |
Number of nozzles | 1 |
Layer Height | 0.1-0.4mm |
Nozzle Diameter | 0.4mm |
Printing Accuracy | 土0.1mm |
Material | PLA, PETG |
CuraProfile | 🔗 PLA 🔗 PETG |
Recommended slicer | SainSmart Slicer (Click to download) |
User Manual | Click Here to download |
Operating system | Windows/Linux/MacOS |
File types | STL/OBG/AMF |
Max. extruder temperature | 240 ℃ |
Max. heated bed temperature | 100 ℃ |
Max. print speed | < 180mm/s, normally 30-60mm/s |
Connectivity | SD, OctoPrint |
Resume print | Yes |
Filament sensor | Yes |
- Reviews
- Questions

Had to take off a star
This is a continuation of my last review. Most of this device is still pretty great, but the mainboard solution is very underwhelming. I've had trouble maintaining a serial connection with octoprint, and having to update the firmware on two separate boards is a hassle. The mainboard may be 32 bit, but the machine is not silent (at all). The motion system is not core xy as advertised (which is good for me, it's easier to troubleshoot and uses less processing). Customer support is responsive and helpful, and the belt appears to have less adhesion issues than the CR-30. This printer would be better if it had an all metal extruder assembly and an all metal hotend (the heat brake liner got jammed for me and it is a hassle to disassemble to repair/replace), and of course a better mainboard with upgraded stepper motor drivers.

Extremely Easy to Set Up
This is my 3rd 3d printer, but it is the first one for which the first print was immediately successful. The printer is shipped almost ready to print, I only had to level the bed. I have mine mounted on a wall. The fans are a little bit loud, but the motors are pretty quiet. I would prefer a more polished user interface on the web portal, but it works well enough as is. I will likely add a raspberry pi for finer control and to monitor prints remotely.