IMPORTANT

• Please read the instructions below. It will help you reduce any print or fitting issues. 
• I have double-checked and tested the print profiles created. If you are using profiles created by others, please verify that they are updated and compatible with the current version.

UPDATE: 30 JUN 2025

1. Uploaded step file for remix. 
2. I will change the license to CC once the exclusive model program reaches 90 days. 

INTRODUCTION

Printing TPU from the AMS HT can be tricky since the rubber grommet causes the PTFE tube to sag. I designed a simple bracket mod (EDM bracket) to hold the tube in place, keeping it tangent to the spool and allowing smoother filament movement.

ptfe tube angle with stock rubber grommet	ptfe tube angle with EDM bracket

PRINT SETTINGS

Since PTFE tube tolerances can vary, I made the bracket in two sizes: 4.2mm and 4.3mm in diameter. Print both to find the best fit. The PTFE tube has to fit snugly but not too tight or loose.

Installation

Check out my X post for the installation video. 
[https://x.com/thrutheframe/status/1907481042812031107](https://x.com/thrutheframe/status/1907481042812031107)

CONCLUSION

Don't ask me why I named it EDM bracket. (I am sure you guys will ask)

To date, all my designs are free to download for personal use—no Patreon, memberships, clubs, subscriptions, or bullshit. If you enjoy my designs and want to support my coffee addiction or help fund materials for prototyping, here’s how you can contribute:

• Share your makes in the comments or on 3D printing social media.
• Give a MakerWorld boost.

Your support is greatly appreciated! 

CAVEAT

As with all my designs, prototyping and testing were conducted to ensure printability and meet my standards. However, results may vary, and I cannot guarantee it will work for you. Please read all instructions carefully before printing and proceed at your own discretion.