Nắp Đầu Dò Từ Tính Centauri Carbon Elegoo SM-33 Ed. SuperLight SE3D Remix

Note! Additional magnet hardware required!

What/Why:

Sander De Groot made some huge gains in the Elegoo Centauri Carbon Toolhead arena. Mainly the fan mounting, their nifty slot for the 8mm magnets at the bottom, and a cover that is magnetic. This was a pain point in the original design, potentially having to unscrew the front cover for nozzle swaps. And the fan posts breaking easily. NBD, we had to start somewhere!

Retaining this brilliant fan mounting, magnetic function and support areas by Sander De Groot I was finally able to craft my vision, a single sided lightened toolhead cover with the looks of SM-33 - my favorite "I ain't heard of no at-attin" droid. It could probably still use some refinement. But it trims the weight down to 45g including magnets (38g-ish without), and even drops the weight further due to removing the side "guide" screws from the OG design. They're unnecessary. 

Printing:

I printed mine in Black ASA. I have a creality chamber heater to print it around 50-60C, 265C Nozz, 100C bed. 0.4 to 0.6 nozzle. 0.30 layer height for 0.6, 0.20 for 0.4. 3 walls recommended. This is about a net weight of plastics of around 38g. 

If you really want to go for broke, 1 wall will drop the mass to 34g. The magnets are about 7g so total would be around 41g. 

UPDATE: I added a slim version that looks to be about 4g lighter than my original SM-33 front cover. I haven't updated the .3mf file yet with it, but it would function the same. 

Hardware/Assembly:

I will take magnet size requests if you have some magnet sizes in stock. I plan on uploading a version with the 6 mm lower magnets, but let me know if you need anything else.

You can reuse the stock fan screws, and stock rear cover screws. But you will need (5) 8x2mm magnets, and (2) 5x3mm magnets. For the magnets, orientation is critical! Be sure to test magnet orientation BEFORE gluing! 2 8x2 magnets are REQUIRED at the top of the front cover. 

Once the magnets are glued, in place...

• Disconnect the fan from the old extruder cover, unscrew it with a small phillips driver. 

• Slide the fan onto the 2 pegs on the new extruder cover, this stops the fan from rotating. Screw the original screws into the new posts. This will secure the fan to the pegs. 

• Unscrew the mid-cowl cover (4 screws), place them in a bag somewhere for safe keeping. 

• Unscrew the rear cover (3 screws), replace the rear cover with your new printed one, and screw the 3 screws back into place on the toolhead. 

• Plug the fan back into the toolhead lead. 

• Snap the front cover in place with the magnets - and you're done assembly! 

Now RE-RUN FULL Auto-Calibration, including:

• Input Shaping 

• PID Tuning

• Bed Leveling

After this, you should be good to go!

Other Notes:

I had made an SE3D toolhead cover in the beginning that I wasn’t the biggest fan of myself. I struggled trying to make a magnetic design that I was proud of, that encapsulated the magnets more than just gluing them in. With the flood of models (hyper weight ones like Andrews) I ended up giving up. I’ve got 3 kids, wife was mad for me staying up late, and I was exhausted.

Enter Sander De Groot - they designed everything I was looking for in a toolhead cover: Lighter weight, magnetic, fan mount that doesn’t suck (no offense SE3D - you started the craze!), and has integrated support. While the magnets are still ideally glued, they hold up SUPER well. I had to give it a shoutout because I took it and was able to complete my vision. A toolhead that was slimmed down, still magnetic (ie easily removable for maintenance and hotend swaps), and looked cool.

I will be adding more tweaks as I go along. Every time look at it there’s something else I want to change. It could use a fan cable clip so that’s next on the agenda, as well as some further pockets/hollowing.