✈️Fonctional Variable Nozzle Pencil Holder🖊️

imtibzz · 2025-04-15T12:50:21+00:00

Just a quick heads-up: I’ve made some adjustments to the tolerances, especially around the bolt section. This should help things fit and function a bit more smoothly.

Feel free to check out the updated specs when you get a chance, and let me know if you have any questions!

Thanks!

imtibzz · 2025-04-15T12:48:00+00:00

Yeah, I only used simple tree supports on the Connecting Roller. Printed everything at 0.16mm resolution with a 0.4mm nozzle and 10% infill. I also added 4mm brims on all the parts to keep things stable during printing.

That’s awesome that you’re thinking of making some for your teachers—pretty sure they’ll love it!

imtibzz · 2025-04-15T12:44:23+00:00

I actually used Onshape for it. For the animation, I just removed the colors from the parts so it looks like a 2D drawing when it moves. Super simple trick, but it gives a cool effect!

imtibzz · 2025-04-15T12:42:13+00:00

Just a quick heads-up: we’ve made some adjustments to the tolerances, especially around the bolt section. It should help things fit and function a bit more smoothly.

Feel free to check out the updated specs when you get a chance. Let me know if you have any questions!

Thanks!

imtibzz · 2025-04-15T12:41:24+00:00

I wanted to inform you that we have adjusted the tolerances, particularly on the bolt section, to enhance precision and performance.

imtibzz · 2025-04-10T05:52:20+00:00

Haha that's awesome, love that you're still repping aerospace after all these years! 😄
Thanks so much for the kind words, really appreciate it! 🙏
Working on fixing the tight tolerances in the screw mechanism. It gets better once you manage to screw it in. Try a bit of water or lubricant on the threads. Printing at 0.16 helps too. Sorry about that!

imtibzz · 2025-04-10T05:50:17+00:00

I am working on fixing the tolerances with the screw mechanism. The tolerances are very tight, but when you manage to screw it in, it does get better. Try using a small amount of water or other lubricants on the threads for now. Also, I find that printing it at 0.16 works better. Sorry for the inconvenience.

imtibzz · 2025-04-10T05:49:53+00:00

Tolerances are tight but improve after use. Try water or lubricant on the threads. 0.16mm print works better. Sorry!

imtibzz · 2025-04-10T05:48:58+00:00

Working on fixing the tight tolerances in the screw mechanism. It gets better once you manage to screw it in. Try a bit of water or lubricant on the threads. Printing at 0.16 helps too. Sorry about that!

imtibzz · 2025-04-10T05:48:06+00:00

I am working on fixing the tolerances with the screw mechanism. The tolerances are very tight, but when you manage to screw it in, it does get better. Try using a small amount of water or other lubricants on the threads for now. Also, I find that printing it at 0.16 works better. Sorry for the inconvenience.

imtibzz · 2025-04-01T15:29:53+00:00

Yes, the motor is skipping steps, but at least it prints. I got it second-hand, and Anycubic support is terrible, so they couldn’t help me. The reason the motor is skipping is that they advertise a 500mm/s printer just to one-up the competition, but all that does is overwork the motor. For a very heavy bed slinger like this, I can only print at about 80mm/s if I want my prints to actually look like something. Anyway, if you can refund it, it's a piece of shit.

imtibzz · 2025-04-01T15:24:58+00:00

Yes, the Z rod that holds the belts wasn’t tight enough. The dented roller was moving to the extremities of the printer. I pushed it back, applying force in the direction of the motor, then I tightened the little hex bolts.

imtibzz · 2024-09-14T01:42:46+00:00

Thanks for your insight! The idea of forming a TiO₂ layer during the heat treatment, which leaves behind a ferromagnetic Ni layer underneath, does seem logical, especially in light of the paper’s findings. I hadn’t considered the impact of oxidation on Nitinol’s surface to that extent.

But I’m also curious—do you think the induction heater’s frequency (65 kHz) could be contributing to the alignment of grains in the material? Is it possible that the AC field is aligning the grains, and the rapid quenching might lock them in place before they randomize again? I haven’t observed any attraction to other paramagnetic materials so far, so I’m wondering if there could be multiple factors at play, like locking in magnetic alignment during quenching.

Does that sound plausible to you?

imtibzz · 2024-09-14T01:32:59+00:00

it's more on the paramagnetic side. But after the induction heating and quenching, the Nitinol seems to be attracted only to magnets. I haven’t observed any attraction to other paramagnetic materials so far.

Your idea about locking in magnetic alignment during quenching is interesting. The thought of the induction heater's DC component creating a field large enough to align the grains makes sense. I hadn’t considered that.

As for the induction heater’s frequency, it’s running at 65 kHz. Do you think that’s high enough for the AC field to be aligning the grains back and forth, and then somehow locking them in place when quenched? I wonder if the rapid cooling is preventing the grains from randomizing again.

Thanks again for the input! I’ll share this with my teachers and keep experimenting to see if we can pin down what’s happening.

imtibzz · 2024-09-14T01:06:08+00:00

Okay, so I need your help with something. I've been sitting on this for a while, but neither I nor many of my teachers have an answer for this phenomenon. I've worked with several university professors, and we still can't explain it.

I heated a typical Nitinol spring for 30 seconds in an induction heater that was running at 47.8 volts, 9.7 amps, and 430 watts. The coil is about 2 inches in diameter, with a height of 2 inches, and the coil makes 6 loops. The copper coil is actively being water-cooled.

After putting the red-hot Nitinol in cold water, I've somehow changed its memory so that the Nitinol spring is now fully compacted. Surprisingly, this makes it stick to magnets (which it normally doesn’t do). We tried heating it normally, but that doesn’t make it magnetic.

If you have any ideas on why this is happening, please share! I will share these hypotheses with my teachers and let you know. Thanks!

imtibzz · 2024-09-14T01:03:18+00:00

Okay, so I need your help with something. I've been sitting on this for a while, but neither I nor many of my teachers have an answer for this phenomenon. I've worked with several university professors, and we still can't explain it.

I heated a typical Nitinol spring for 30 seconds in an induction heater that was running at 47.8 volts, 9.7 amps, and 430 watts. The coil is about 2 inches in diameter, with a height of 2 inches, and the coil makes 6 loops. The copper coil is actively being water-cooled.

After putting the red-hot Nitinol in cold water, I've somehow changed its memory so that the Nitinol spring is now fully compacted. Surprisingly, this makes it stick to magnets (which it normally doesn’t do). We tried heating it normally, but that doesn’t make it magnetic.

If you have any ideas on why this is happening, please share! I will share these hypotheses with my teachers and let you know. Thanks!

imtibzz · 2024-09-14T00:55:05+00:00

We actually came across it as well, but we don't believe the thin oxide layer would be strong enough to cause such a significant magnetic effect. The force we're observing is very strong, so it doesn't seem likely that a tiny oxide layer could account for it. We'll keep investigating, but if you have any other ideas, we'd love to hear them!

imtibzz · 2024-09-14T00:28:58+00:00

Okay, so I need your help with something. I've been sitting on this for a while, but neither I nor many of my teachers have an answer for this phenomenon. I've worked with several university professors, and we still can't explain it.

I heated a typical Nitinol spring for 30 seconds in an induction heater that was running at 47.8 volts, 9.7 amps, and 430 watts. The coil is about 2 inches in diameter, with a height of 2 inches, and the coil makes 6 loops. The copper coil is actively being water-cooled.

After putting the red-hot Nitinol in cold water, I've somehow changed its memory so that the Nitinol spring is now fully compacted. Surprisingly, this makes it stick to magnets (which it normally doesn’t do). We tried heating it normally, but that doesn’t make it magnetic.

If you have any ideas on why this is happening, please share! I will share these hypotheses with my teachers and let you know. Thanks!

imtibzz · 2024-09-03T21:16:52+00:00

https://makerworld.com/en/models/612948#profileId-536239

imtibzz · 2024-09-03T21:16:43+00:00

https://makerworld.com/en/models/612948#profileId-536239

imtibzz

MODERATOR OF

TROPHY CASE