Thread Chasers FTW - A simple way to restore threads
A little background: I received my Mk4 printer around two weeks ago, and I've been using it extensively since then. Starting with small prints using PLA, I gradually moved on to PETG and larger prints. To save time, I used the Nextruder-V6 adapter with a 0.6 nozzle. Additionally, I had a set of Diamondback nozzles that I was eager to test with the MK4.
Problem: Unfortunately, I encountered a minor issue, or a few, due to my failure to fully tighten the nozzle. This resulted in a significant PETG leak, covering the threads of both the nozzle and the heater block. While I know that heater blocks are relatively inexpensive to replace, they were currently sold out for the Nextruder. Consequently, my only option was to clean up the threads.
According to popular opinion, using heat and/or brass brushes was the best approach to tackle this problem. This method worked fine for the nozzle threads, but it was ineffective in cleaning the inner threads of the heater block. Despite trying various recommended methods, I couldn't successfully clean the threads. This prompted me to search extensively on Google, exploring multiple 3D printing forums. Initially, I found very little information, which led me to broaden my search into the automotive industry. Since the automotive sector deals with aluminum threaded parts, I believed I could find a solution there.
Interesting fact: Engine blocks are commonly made of aluminum, contain numerous female threads, and experience high temperatures (up to 100°C). Moreover, engines require specific torque values and demand pristine threads. This realization led me to consider two possible solutions:
1. Tap and Die
2. Thread Chasers
As I wanted to preserve the M6x1.0 threads, I purchased an Aluminum M6 thread chaser from Amazon. Surprisingly, it took me less than 10 minutes to completely clean the inner threads of the heater block. Using a warmed-up heater block, I threaded the chaser in and out gradually until it moved smoothly. I then allowed the block to cool down entirely and repeated the process. In conclusion, I highly recommend using a thread chaser to anyone facing the task of cleaning female threads on a heater block.
TLDR: Thread chasers are an effective solution for restoring and cleaning female threads that have been covered in filament.
RE: Thread Chasers FTW - A simple way to restore threads
Great recommendation, but I'm not seeing an individual M6 Thread Chaser on Amazon - only complete sets.
Whatever you find to do with your hands, do with all your might!
RE:
These are the thread chasers that I purchased on Amazon. They are $9 USD for the set. I tossed the M8 bolt and just kept the M6 it came with. I later found them at my local hardware store for a bit cheaper.
