Hello, fellow 3D printing enthusiasts! Today, we’re diving into an exciting upgrade for your FunMat HD 3D printer. We’ll show you how to change the hot end, ensuring a smoother and more precise 3D printing experience. But before we get started, here’s what you’ll need: a 2.5mm Allen wrench.
Step 1: Safety First
Make sure your 3D printer is turned off and completely cooled down. Safety is paramount when working with 3D printers, so always double-check these basics.
Step 2: Removing the Hot End
Using your 2.5mm Allen wrench, carefully undo the two bolts securing the hot end in place. But before you pull the hot end out completely, you’ll want to ensure that you’ve disconnected the power cable (the green one) and the thermistor. If your setup includes a high-tech mogul in thermistor and jumper wire, make sure to disconnect them as well.
Step 3: Proper Alignment
When replacing the hot end, proper alignment is crucial for optimal 3D printing. Focus on this black bracket at the bottom that holds the fins for the heat break. These need to be flush and flat against each other to ensure the hot end is perfectly aligned. Misalignment can lead to printing issues, so it’s essential to get this right.
To achieve the correct alignment, apply a bit of downward pressure on the heat block while making adjustments. These brackets can be bent and moved to the right position, allowing you to customize their alignment. Just remember to keep that heat block flat and aligned properly.
Step 4: Secure the Hot End
Now, with the alignment in check, it’s time to secure the hot end. Don’t over-tighten the bolts just yet; keep them at a finger-tight level for now. This gives you the flexibility to make any final adjustments to ensure everything is perfectly aligned.
While tightening, ensure you maintain some downward pressure on the hot end. This ensures that it doesn’t get crooked during the process. It might require some back-and-forth adjustments, but that’s okay. The key is to get it right.
Step 5: The Satisfying Click
The moment of truth comes when you depress the nozzle, and you hear that satisfying click. That click indicates that the micro switch is working as it should. Proper alignment ensures that the nozzle goes directly up and straight into the micro switch. This smooth action is what you’re aiming for. If you’re not getting that satisfying click, don’t worry; you can make slight adjustments to achieve it.
Step 6: Reconnecting the Cables
Now that your hot end is properly aligned, it’s time to reconnect the cables. The green power cable should go on the bottom, and your thermistor (or thermocouple) and jumper should connect to the only available open slot.
Step 7: Calibration is Key
Before you start printing, it’s imperative to do a level sensor calibration. Even if you don’t plan to use auto-leveling, this calibration is a must. It ensures that your 3D printer’s leveling is accurate and sets the foundation for successful 3D printing.
So, there you have it! You’ve successfully upgraded your FunMat HD by changing the hot end, and you’re now ready for an enhanced 3D printing experience. If you have any questions or need further guidance, feel free to ask. Happy printing!