Prusa Core One HT – Finally, it's done!
 
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Prusa Core One HT – Finally, it's done!  

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jan.d.slay
(@jan-d-slay)
Reputable Member
Prusa Core One HT – Finally, it's done!

Hello to all Prusa Core One fans,

Before I begin, I would like to say a big thank you to metacollin. Of course, I only found and read your post here in the forum after I converted my MK4 to Core One.

The topic of high temperature, or rather, breaking through the 290-degree nozzle temperature limit, has always been an incentive for me to look into it. Encouraged by metacollin's post, I now considered: buying a used MK4 and converting it as metacollin described, or waiting until Prusa released the HT nozzle plus software.

In short: Last weekend, I asked ChatGPT whether it would be feasible to include metacollin's changes in the latest “stable” firmware 6.3.4. After three days of debugging and adjustments to the source code (without any knowledge of the programming language, mind you), the finished software was released yesterday evening.

I quickly ordered a copper heating block and a PT1000 sensor (as linked by metacollin) from Amazon.

Today was the big day:

  • Copper heating block and PT1000 sensor installed
  • Seal on the circuit board broken
  • Firmware loaded onto formatted stick
  • Modified firmware “HT450” installed.
  • Done

Finally, here's the video:

This topic was modified 11 hours ago by jan.d.slay

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Posted : 23/02/2026 7:05 pm
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