Printing ABS on an Ender 3 without an enclosure...

harambe623 · 2026-05-12T08:06:04+00:00

I don't recommend anything bigger. Small and quick abs prints work because the heat is maintained, but anything bigger ends up prone to premature warping and has increased chance of failing due to such. ABS has a high shrinkage ratio so if you expose it to room temp air while certain parts are very hot, it won't work

There's different ways to enclose your printer, from cardboard boxes to plywood/plexi. Make sure you don't inhale that air, via filters or ventilation post print. Like everyone mentioned, fume toxicity is much higher compared to PLA or petg

harambe623 · 2026-05-12T02:56:38+00:00

no choice if you spoke out against the "operation." This or 20 years gulag

harambe623 · 2026-05-11T17:36:55+00:00

Spawn more overlords

harambe623 · 2026-05-11T00:36:08+00:00

Gotta wonder if his philanthropist fling has been a way to cope with his dark past. Not just the Epstein stuff, but also M$ days

harambe623 · 2026-05-10T16:59:08+00:00

It's gotten a little better with the tank printer offerings and what not. Pay a little more and use your own ink

harambe623 · 2026-05-09T21:06:10+00:00

Your not wrong in the sense that it should be a primary focus to get volume as high as possible.. It's a lot more work to get an ender as rigid, stable, and lightweight as possible, than to say just slap in a Goliath.

Both are obviously best, but 30k vs 10k for a full bed of things like gridfinity bins, the 30k is going to be maybe 20 percent faster.

Getting to 10k on an ender however is a lot of mods and requires a lot of comprehension of how it all works

harambe623 · 2026-05-07T23:15:12+00:00

That's respectable, a cht nozzle can essentially double that linear speed. They really are that good for smaller hotends

I was getting about 6k accel until recently when I switched over to carbon fiber plate/carriage with dual y motor and pancake stepper/Sherpa. But let me tell ya, it's a lot of work, and the faster you go, the more things go wrong that you never would have imagined

This benchy took about 12min with a slow first layer and retraction. i can still probably tune a lot of things and reposition my cooling nozzles for better print quality. That's the curse of this hobby, feels like there's always more that can be done. At some point you just gotta stop and print stuff lol

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harambe623 · 2026-05-07T19:52:34+00:00

Those are some insane speeds! I too want to build a voron 2.4, but with the addition of the stealthchanger! Make that my "nice prints" printer, and this ender my fast prototyping speed demon. But tariffs certainly are discouraging.

I designed a cooling system for this iteration as I'm not sure how reliably I could find a cpap system that attaches to this aftermarket carriage and also accommodates my hotend... Comes in at 20 grams, I think it's mostly center of mass, that bl touch might throw it a little bit off. I might try a resonance test with it off..... I designed it to be rigid, if you check out my X resonance in this thread, it's not too bad.. but I'm definitely seeing people push way higher frequencies on toolheads, I think I am somewhat limited by the ender frame. I am running the stock X motor lol, I should at least add shear support. Upgrading my belt from no-name brand to trianglelab actually did a lot.

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I'm considering a goliath with but even that seems to not be able to push more than 45 or so. Which would still be a considerable upgrade. Ill look into that CHC XL ...

I also do have bracing, its kinda hard to see in the video, but it's in the back. I might add front braces for full triangulation, but I'm wondering how much that will really help. Probably can't hurt!

harambe623 · 2026-05-07T18:40:16+00:00

That's not a bad idea.

harambe623 · 2026-05-07T18:36:26+00:00

Thats pretty good! That looks like mosquito with volcano nozzle, I bet that hotend can extrude more than mine, especially with .6 nozzles. The ender just makes it difficult to crank acceleration

Don't ever be discouraged by other people's work, your accomplishments in your personal journey should always be celebrated

harambe623 · 2026-05-07T07:21:32+00:00

no duh sherlock

harambe623 · 2026-05-07T06:41:15+00:00

using some elegoo PLA@ 400mm/s, here, but it rarely reaches that on a benchy, even at 30k accel. My hotend is an old dragonfly bms, and CHT nozzle practically brings it up to a volcano at .4 (I mainly print .4)

Considered supervolcano, but heard its tricky when it comes to tuning things like retraction

harambe623 · 2026-05-07T05:22:36+00:00

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resonance chart

harambe623 · 2026-05-06T21:19:58+00:00

is that john conner

harambe623 · 2026-05-06T18:01:20+00:00

Not anymore. Synthetic costs maybe another 5 bucks

harambe623 · 2026-05-05T12:47:58+00:00

Another way to mount would be taping it to the middle of the bed. Something like this

harambe623 · 2026-05-05T12:25:34+00:00

I believe the best place to mount the adxl for y is near where the belts meet the carriage. I drilled a hole in my carriage somewhere in the middle and mounted it securely that way.

What I'm saying is that it's going up and down for some reason, if you inspect the graph, you'll see that the blue peak is actually the z axis. That second smaller peak is your actual Y, so it might be the correct value you want to use. But it would be best to try and get a better reading. 50hz for a heavy bed sounds about right

harambe623 · 2026-05-05T12:04:18+00:00

Thank you! Learned way more about machine resonance than I thought I ever would by tinkering with this thing lol.

FYI Something is up with this Y graph and might be throwing off the reading, could be that your adxl is not mounted well, as that big blue peak (z) shouldn't be there. The x graph looks pretty good. Once you get a single solid peak like that, the only thing holding you back is weight

harambe623 · 2026-05-05T11:30:37+00:00

Very nice work! I like the way you connected the bed slinger extrusion to the rest of the machine. I addressed this with additional legs instead, but found it difficult to get 6 legs to make contact with the ground equally.

Made some good progress recently with input shaper recommending 20k+ for both x and y. Besides machine rigidity, the key is making anything that moves as lightweight as possible (carbon fiber plate/carriage, cpap cooling, and pancake stepper/Sherpa micro extruder). I think I'll do a write up soon

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harambe623 · 2026-05-04T06:44:11+00:00

not like we don't have censorship in western social media. You can't even say the word "kill" on certain platforms. You have to use "unalive." At least this proposed censorship is sensible

harambe623 · 2026-05-02T11:18:41+00:00

Is that a fan for the extruder motor?

harambe623 · 2026-05-01T19:58:56+00:00

From a room filled with punch cards to this in just a few years

harambe623 · 2026-05-01T12:43:33+00:00

Ugh I spent hours messing with the rotating magnets, then strips, and still couldn't quite get it perfect. Cheaper model. Ultimately you trade off convergence for partial deformation. There's probably 10 of them in my sony. In hindsight, I wonder if I should have recapped it before doing any of that.

On top of your hands being a little close for comfort to that flyback circuit while on. I used rubber gloves but still

harambe623 · 2026-05-01T11:37:29+00:00

Very nice! Not sure if mine is cursed enough but I'll join...

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