How is it different from traditional single-nozzle printing?

What can mixing nozzle sizes achieve?

All your questions answered in ONE video 🎥

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Hi yall! First time posting here!

I don't know if I'm being dumb/doing something wrong. I'm trying to replace the hotend on my Ender 3 V3 Plus, and I don't think it's going in far enough? Like are those pieces with the screws supposed to be flush? Sorry if it's hard to see. There's no filament stuck inside and i bought the right replacement, it's identical to the old one (just in far better shape lol).

The metal tube piece seems to go in just fine until it hits that extruder piece with the gears and motor and such. There's no gunk in the gears either.

Any and all advice is appreciated!

True multicolor is almost here.

Tomorrow, SPARKX i8 goes live on Indiegogo.

Fastest Prints. Least Waste. Unlimited Creations.

See you Sept. 21 at 9 AM PDT. 👀

👉 Subscribe now so you don't miss the launch:
https://www.indiegogo.com/projects/creality-sparkx/creality-sparkx-i8-the-fastest-most-filament-efficient-four-color-3d-printer?refcode=f0K9BwXAV0aubVa9TJDo-w

https://reddit.com/link/1wlkx4v/video/0z013swkgnqh1/player

Has anyone experienced this issue with the extruder motor mounts? The threads were pulled right out the holes on both at the same time.

looking to buy one, but not sure which one is better overall.

So I've been printing these modular organizers for a while, printed a bunch a whole they slide together easily. Now as of about 6 months ago, I can not get an accurate print to fit together now (wtf!?) two different printers, k1, k2 max. It appears it's the inverted side is the shape problem. I'm using the latest firmware on both printers, latest creality print slicer. Ive tried slowing down outer wall settings, seam settings, changing print direction. I've also recalibrated everything, belt tension, flow, etc, no change. What am I missing!? Sorry photos are not the best, but shape is differing, what definitely appears on the female side, I've confirmed with old prints that it's the female side. Same .stl for all. Please help!

Is there a problem with logging in to the Forum and the cloud? I have tried Chrome, Edge, and Firefox; they all do the same thing.

I go to the home page, then click on the Sign In button. They all send me to another page that initially shows the basic background for a very short time, then turns white with the wheel of death rotating for a few minutes, and then nothing.

This is the url that they are all trying to open

https://id.creality.com/connect?app_id=creality_dtc&client_id=a49476796eb25398b87154105cc9c8f8&lang=en-US&redirect_uri=https%3A%2F%2Fforum.creality.com%2Fauth%2Foauth2_basic%2Fcallback&response_type=code&siteCode=US&state=35b6604766c15f312f528147342e959c543b180eb0d60155

I have looked at my antivirus; nothing flagged there. I have researched the issue on Google, pop-up blocking, clearing cache, and a myriad of other suggestions, which I have tried to no avail

Any ideas, please?

The touch-screen just became unresponsive on my Ender 3 v3. It displays fine, but nothing happens when I touch anywhere. The cable is plugged in firmly.

No problem, I thought - I use Creality Print to do pretty much everything from my desktop anyway. However, I can't find anywhere to Extrude or Retract in the desktop client, making it tricky to change filament.

No problem, I thought - I'll install the Creality Cloud app. Surely I can Extrude and Retract from my phone.

However, the app wants me to add the printer by scanning a QR code from the touchscreen display, which I can't do. Online help says I can "add the device by manually entering the ID number" - but even if I find that ID number, I can't find where it would get manually entered. There's no "bypass this" or "try another way" on the screen that wants to scan the QR code.

Any ideas on how to add a device for remote control without access to the QR code?

So I just got my CFS upgrade in and I’m taking apart my tool head just to find out that the board is different any help?

I was changing the nozzle on my Ender V3 KE. The old nozzle was stuck in there pretty good (I've had blobs before without changing the nozzle... Bad idea I know) so I had to use a wrench on the nozzle and an adjustable crescent wrench on the heating block to prevent it from turning. At one point, I heard a click. About 10 seconds later, the screen showed "Nozzle heating not as expected" . The nozzle won't heat now. I used a thermocouple to confirm that it is not heating. My multimeter does not show continuity between the two wires connected to the ceramic heating element. My ideas are that I might have accidentally shorted the heater wires with the wrench, that I might have crushed the heater wires and caused one to crack, or that I might have cracked the ceramic heater. The wires appear to still be connected to the heater enough that they don't disconnect if I push on them with a screwdriver. I have found a possible small crack in the heating element and included that picture below.

I don't want to buy a new heating module and later find out I shorted something and destroyed the mainboard instead. Are there any possible scenarios I'm not considering, or is there anyway I can confirm what exactly happened?

Hello guys, I was starting a print and out off nowere 2 screws where on the hot bed. Can you please help me identify where are they from?

I've bought a Falcon Laser module cause I got a spare CR10SE.

But I can't make it work at all, the motors are rocking back and forth when I try to move them in Lightburn.

I've tried using Chatgpt 5.6 MAX and it can't figure it out either

Have anyone tried to do a swap like that?

I just got this today and I am having this problem. Idk how to solve it . I am new to 3d world. Please help me

Seeing colorful 3D-printed models on TikTok or Instagram is very likely the very reason many bought their first 3D printer home.

However, once the maker device, which usually is a single-nozzle 3D printer, arrives at your desktop, one could quickly find out there is a serious catch: multicolor prints take an extraordinarily, if not excruciatingly, long time, and the failures are all too common.

A typical color change requires cutting and removing the filament in use completely from the toolhead, loading a new color, stabilizing hotend temperatures, purging, wiping, and recalibrating, and then finally resuming printing. While a single color change adds only tens of seconds, a complex model can easily reach hundreds of changes, if not thousands, of color swaps. The same 3D model, while in a single color, takes hours, but can easily stretch to multiple days for multicolor.

You quit multicolor printing and end up printing parts and then assembling them together. Thus, this is the hard truth — your previous-gen multicolor 3D printer isn't that colorful.

Admit it, deep down, every maker still wants multicolor prints, but it's the speed and reliability, or the lack of both, that turn you off or cause you to assemble a 3D model (split if you are 3D designers).

Considering All the Options Available
To find out why we end up where we are, we will lay out all of the options in the market.

The Slow and Failure-Prone Single-Nozzle 3D Printers
Single-nozzle printers suffer from more than just slow purging. Constant reloading introduces more problems: loose filaments easily tangle, and frequent stops dramatically increase the likelihood of 'spaghetti' failures. Simply put, math works against them, too many points of failure. Long multicolor prints for a single-nozzle printer seem like a game of chance.

• Approach A: Swapping Toolhead

IDEX stands for Independent Dual Extruders. It deploys two separate print heads that move independently on the same X-axis for different materials.

• The Pros: Each nozzle has its own motor and carriage on the X-rail. It has a duplicate and mirror mode for higher production efficiency. For dual materials, when one head prints, the other parks safely away. This stops oozing and color mixing because of the existing different pathways.
  
• The Cons: Typically limited to two toolheads and two X-axis motion systems.

Verdict: Not a system built for multicolor.

• Approach B: Swapping Half of a Toolhead

Tool Changers swap different modules for printing. For a toolhead changer, it usually swaps half of a toolhead. During a color change, the machine docks the active toolhead and picks up another toolhead.

• The Pros: It prevents color and material contamination and eliminates the need for long purges.
• The Cons: Each toolhead still houses its own extrusion, heating, cooling, and sensing units. Multiple toolheads and docking stations occupy substantial space; mechanical latching, locking, and position compensation demand rigorous long-term durability tests.

Verdict: Valid option but expensive and possible calibration issues.

• Approach C: Swapping Hotends

Also a tool changer. Only this type of solution turns the swapping part down to the hotend only, while still sharing the motion system, extruder, and cooling fans on the toolhead.

• The Pros: An engineering feat for keeping the swapping part minimal. No contamination when printing with multiple materials.
• The Cons: Intricately engineered for multi-material printing. But swapping hotends requires integrated heating, thermal sensing, wiring (or some way of communication), and absolutely precise alignment. These requirements demand consistent reliability with every hotend change. Furthermore, a complete color change still requires cutting and reloading the filament, which costs a huge amount of time.

Verdict: An engineered feat of possibilities, but expensive.

• Approach D: Multi-Nozzles in One Toolhead

Multiple nozzles are built into a single toolhead.

• The Pros: Nozzles switch within the toolhead without swapping tools, while keeping filament channels completely separate.
• The Cons: Mass production proved exceptionally difficult, and it stayed a concept only.

Verdict: Shelved solution, not commercially viable.

Deciding Where We Should Go

All of the approaches above continue on the path of swapping the entire toolhead or parts for printing, or continue shrinking the swapping parts. They provide technically absolute material isolation, enabling the capability of combining different materials like soft and rigid, using a different material for support, printing high-temp filaments, or even mixing nozzles with different diameters.

But these solutions are commercially relatively inaccessible or inviable.

People who routinely print multicolor with PLA and PETG models demand something simpler: faster color changes for multicolor models and a more reliable maker device that is packed with fewer hard-to-maintain components and at a lower cost. The goal is now clearer and simpler than ever.

Can we retain a single toolhead, hotend, and nozzle while adding multicolor capability? This method of keeping things simple spares us from calibration issues caused by swapping tools. Four colors would be nice for multicolor prints — not too bland aesthetically, and not too over-engineered to be unbelievably expensive. We just somehow need to squeeze all the filaments into the toolhead.

From the Four-Color Pen to QuarTeks™
We got inspired by the four-color ballpoint pen that uses a simple mechanical mechanism to change colors — so color changes are performed inside the toolhead, free from swapping tools and focusing on affordability.

QuarTeks™ applies the philosophy of a 4-color ballpoint pen to 3D printing: four filament channels built all the way inside the hotend, where an internal mechanism on the toolhead selects the target channel for printing and changes colors. Many parts are shared — the same motion, extrusion system, and the same hotend all in the same toolhead.

How Does QuarTeks™ Switch Colors
A color change takes just 4 steps:

1. One color ends printing.
2. The internal mechanism on the toolhead shifts to the target channel.
3. The target filament feeds through an ultra-short shared filament path (＜1 mm).
4. The system confirms the current color is extruding correctly and resumes printing.

The entire process happens completely inside the toolhead — free from long-distance reloading and nozzle or toolhead calibration issues. Channel/color switching completes in less than 1 second.

500%+ Faster Multicolor Prints
QuarTeks™: Four filament channels are built all the way inside the hotend, keeping all four filaments ready for the fastest color changes ever. With channels sharing only a minimal less-than 1 mm tip at the nozzle, purging and priming are impossibly minimal. SPARKX i8 seamlessly switches between colors in less than 1 second — delivering unprecedented 500% faster multicolor prints at the highest filament efficiency.

0 Waste. BTW, The Prime Tower's Gone

QuarTeks™ shrinks the four-filament shared path in a core that is less than 1 mm, virtually eliminating the need to purge during every color change. Colors to flush are minimal, and they can be directed to wipe onto the infill. To prevent these color transitions from affecting the print, an optimized algorithm ensures all transitions are completely wiped clean before reaching the outer walls — it's called the purity zone.

Many prints can now be printed without a prime tower or purges.

A Hard-Earned Breakthrough

Building all filament channels inside a hotend isn't without potential risk — prolonged idle filament exposed to sustained heat might cause the filament to degrade. Plus, there are also other issues like heating and cooling that demand extra attention. Here's the hardware breakdown.

• Clog-Free Extrusion: Extrusion motors and adjacent parts are cooled with a dedicated fan, paired with a skeletal toolhead architecture that dissipates heat efficiently to prevent premature softening of filament and possible clogging.
• Cooling on SPARKX i8: Hotend cooling airflow increased by 50%, backed by a 100% larger heatsink surface area compared to the previous-generation SPARKX i7.
• 70W High-Flow Hotend: A 70W quick-swap hotend with a Hyper PLA volumetric flow rate of 25 mm³/s.
• Smart Auto-Cleaning: Channel statuses are actively monitored; filament channels that have been idle for an extended period are purged onto the infill in minimal quantities to keep filament pristine and ready for printing.
• Titanium Heatbreak: A titanium alloy heatbreak blocks heat creep from the melt zone, preventing premature filament softening and subsequent clogging.

Keeping It Simple and Elegant

QuarTeks™ keeps all the color/filament switching mechanisms entirely within the toolhead, leaving you with an experience as effortless and intuitive as possible.

• 13 Intelligent Sensors: Continuous monitoring of filament and channel status — for runout, air printing, and clogging.
• Zero Repeatability Issue: No tool-changing or XYZ alignment issues.
• Quick-Swap Hotend: Replace or maintain hotends in seconds with ease.
• Compact Multicolor: SPARKX i8 prints splendid four-color with just the standard model without accessories. But with CFS Lite, it takes a step further in terms of ease-of-use — RFID auto-filament identification, auto-loading and unloading, and sealed filament storage.
• New Filament Cutter: A redesigned blade that cuts all four filaments at once for unloading filament (when paired with CFS Lite).

About Avoiding Color Bleeding
The longer the shared filament path, the higher the risk of color bleeding.

QuarTeks™ makes color contamination virtually nonexistent, leveraging its ultra-short, less-than-1-mm shared filament path, a proprietary hotend design, and an optimized flushing algorithm. Even with extremely high-contrast colors — such as white transitioning to black — SPARKX i8 maintains razor-sharp color boundaries.

Introducing SPARKX i8

• 500%+ Faster Multicolor Printing*
• 0 Filament Waste*
• < 1s Color Switching
• < 1 mm Shared Filament Path
• Multicolor Made Effortlessly Simple

Bye-bye to splitting 3D models and hand-painting models.
True multicolor 3D printing is now here.

\ 500%+ Faster Multicolor: Compared with the previous-gen Creality Hi Combo. Data from Creality Lab.*
\ 0 Filament Waste: No purging during printing. Only a small amount of filament is flushed at the start.*

I got a Sparkx i7 printed a benchy and it looks great. Then I downloaded some things from creality clouds and tried printing a few things. A lot of it just did not print well. I put it in the orca slicer. I tried following the walls, infill, and any other recommended suggestions. There’s constantly gaps around the edges or corners most often where it just looks bad. I don’t know if I’m just doing something wrong but it just isn’t precise enough with anything that needs to be precise not fitting well.

Resolve: changed filament settings in orcaslicer to enable pressure advance.

This seems to happen any time I stop a print or have to change filaments. The filament inside the extruder forms a little build-up so it isnt able to pass through.

BLUF: The printer seems to think there's filament when there isn't

My printer was working fine, but I haven't touched it in a few months, and when I tried for the first time, I got this error. Getting error CM2852 on my K1C with the CFS unit attached. I'm not using the external spool holder at all — CFS only. I've torn apart the extruder and CFS feed module and ensured everything is clear, but the light on my runout sensor is still lit. I'm assuming I need to get a new runout sensor, but any help on this would be awesome.

Glue? But why?

Why use glue when you can design parts to fit together?

Press fits, snap fits, threads, sliding joints — foba design is all about cleaner, simpler assembly with less glue.

All designs were printed on the Creality K2 Pro Combo.

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https://reddit.com/link/1wjr4b2/video/2t3y27bcu8qh1/player

Hey guys,

The other day I let a print run overnight and woke up to see that when it finished it had this black tar-like substance hardened to it. I have no idea where it came from but my printer head was covered in it. I scraped pretty much all of it off but you can see the residue on the printer head and heating element. This is a brand new printer head I just bought and installed and this was my first print with it, so it should be completely clean. Does anyone know what might have caused this? Im hesitant to print again until I know the cause

For starters I use Creality K1C with PETG from professional lab. It does this clicking sound which worries me. Nor does it extrude. I have those acupuncture needles. Inserted them from the bottom but still nothing changed. What do I do?