Universal Belted Extruder - Bowden and Direct

thingiverse

The text you provided appears to be an instruction manual or guide for building a 3D printer, specifically the "Birdeye" or "Birdnose" extruder design. The document covers various aspects of the build process, including: 1. **Printing and Post-Printing Procedures**: This section focuses on preparing the Idler, which is a critical component that helps maintain tension in the filament as it passes through the hotend. 2. **Custom Section: Calculating Steps and Gear Ratio**: This part of the guide explains how to calculate the steps per millimeter (steps/mm) for your extruder based on motor specifications and gear configurations. It provides formulas and examples using different gear ratios. Here are some key takeaways from this document: * To achieve smooth prints, it's essential to use a drill bit size matching your filament diameter (e.g., 3mm or 2.85mm). * For the Idler preparation, you'll need 3 M3 nuts and ensure that the centre spacer fits snugly in the 608ZZ bearing. * The guide offers various gear and belt combinations for achieving different steps/mm values, including: * 16-GT2/60-GT2 aluminium pulleys: ratio 3.75:1 (1125 steps/mm) * 20-GT2/60-GT2 aluminium pulleys: ratio 3:1 (900 steps/mm) * 16-GT2/40-GT2 aluminium pulleys: ratio 2.5:1 (750 steps/mm) * 20-GT2/40-GT2 aluminium pulleys: ratio 2:1 (600 steps/mm) This document is a valuable resource for anyone looking to build or upgrade their 3D printer, providing detailed information on customizing the extruder for optimal performance.