# VoronBFI

**Repository Path**: hellozbk/VoronBFI

## Basic Information

- **Project Name**: VoronBFI
- **Description**: Beefy Front Idlers (for Vorons)
- **Primary Language**: Unknown
- **License**: GPL-3.0
- **Default Branch**: main
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2025-09-08
- **Last Updated**: 2025-09-08

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# BFI (Beefy Front Idlers)

![BFI family render](images/BFI.png)

### What?

These are replacement front idlers for Vorons (and Voron-based machines) designed with one core principle: use belt tension to *compress* printed layers instead of splitting or pulling them apart.

This design is available for Voron Trident, Voron 2.4, Salad Fork, and Micron.

### Why?

Using BFI means you should never have to deal with this kind of heartbreak again.

Stock | Rama's
--- | ---
![cracked stock front idler](images/cracked_stock.jpg) | ![cracked Rama's front idler](images/cracked_rama.jpg)

## BFI for Trident

For Trident, you'll need:
- 4× M5×40 SHCS
- 4× M5 hex nuts
- 2× 5mm-diameter pin, 18mm long

...plus the same shim/bearing stack setup for each idler as the original stock front idlers.

## BFI for Voron 2.4

For V2.4, you'll need:
- 4× M5×30 BHCS 
- 4× M5 hex nuts
- 2× 5mm-diameter pin, 18mm long
- 2× M3 t-nuts
- 2× M3×16 BHCS

...plus the same shim/bearing stack setup for each idler as the original stock front idlers.

## BFI for Ants

For Salad Fork, you'll need:
- 4× M3×25 BHCS
- 4× standard Voron M3x5x4 heatset inserts (5mm outer diameter, 4mm deep)
- 2× M3×12 SHCS

For Micron, you'll need:
- 4× M3×20 BHCS
- 4× standard Voron M3x5x4 heatset inserts (5mm outer diameter, 4mm deep)
- 2× M3×12 SHCS

...plus the same shim/bearing stack setup for each idler as the original stock front idlers.

### But wait, there's more!

The same carriage design has also been applied to work with Micron, Voron 2.4, and Doomcube Z idlers.

# BZI (Beefy Z Idlers)

![](images/BZI.png)

## BZI for Voron 2.4

For V2.4, you'll need:
- 8× M5 hex nuts
- 8× M5×40 SHCS
- 4× 5mm-diameter pin, 22mm long

You'll reuse the existing M5×30 BHCS and roll-in M5 nuts for mounting to the frame, as well as the 20T toothed idlers from the original stock Z idlers.

## BZI for Micron

For Micron, you'll need: 
- 8× M3 hex nuts
- 8× M3×30 BHCS
- 4× M3×16 SHCS

You'll reuse the existing M3×20 BHCS and preloaded M3 hex nuts for mounting to the frame, as well as the shim/bearing stack setup from the original stock Z idlers.

## BZI for Doomcube

For Doomcube, you'll need:
- 8× M5 hex nuts
- 8× M5×40 SHCS
- 4x 5mm-diameter pin, 22mm long

You'll reuse the existing M5×25 BHCS and roll-in M5 nuts for mounting to the frame, as well as the 20T toothed idlers from the original stock Z idlers.

## One more thing

There are also a bunch of [usermods](usermods/) for BFI. If you have non-Gates idlers, or you want Voron logos, or wish BFI were more symmetrical… might want to check them out!

# Whose fault is all this anyway?

- @clee, initial prototype
- @bythorsthunder, early feedback and testing
- @KayosMaker, first port to V2.4
- @hartk1213, Micron and Doom 

While not directly built upon it, this design is definitely inspired by @Ramalama2's front idlers.