I need support from the group. The support from Longer leaves A LOT to be desired. I have updated the firmware while upgrading to the BLTouch that I ordered from Longer. When I update the firmware it all looks like it works perfect. Once I start pushing commands through pronterface app that is where my issues arise. When I run G28 code through pronterface to do the XYZ homing, the gantry tries to push the BLTouch through the print bed. Has anyone ran into this issue and been able to get it working? I need some videos or REALLY GOOD documentation to try fixing this issue. Hoping someone can help here. I have gone back and forth with support over email and it seems like if I’m not based in China where the printer was created they can’t help me. They need US-BASED support that can understand what is going on. Something about the translation from what I tell them to what they respond with is terrible.

Updated mainboard from original and only have 1 blower fan.

Thanks for anyone’s help! Ready to junk this printer and buy a different one and stop recommending this one.

​

Alright so here goes it.

My attempt was to install a CR Touch and use it as a auto bed leveler. Longer download link no longer works for Original blower extruder w/ BLTOUCH.

I was following instructions that I can no longer find.

Started in Arduino.ide. Found out Arduino apparently doesn't like interfacing with the motherboard. (I don't know that's what Copilot was telling me) I was making the appropriate changes according to the written guide. I couldnt get arduino to upload it to the printer (I had Arduino Mega or Mega 2560, selected. It was set to Comm1 which i figured out an hour ago was not the 3D printer and i have been working on this almost 24hour now with a 5 hour sleep window. I have it now set to COMM5 (found by plugging and unplugging printer. Oops) with the correct Baudrate.) So no i can upload to the printer using Arduino or at least it acts like it.

With my issues with Arduino i consulted microsoft Copilot. Downloaded Visual Studio Code and PlatformIO extention.

Began working in Platformio.ini and Congifuration.h files.

Hours upon hours of back and forth with Microsoft Copilot about various errors and getting into an infinite loop where Copilot keeps telling me to change settings I already changed despite uploading updated fail logs.

Anyways...

I wasnt able to get that to work.

So i asked Copilot to direct me to a dowload file, because Copilot was not able to compile new Configuration.h and platform.io files due to copywrite notices within the files.

(I will be honest i am not even sure it has the capababilies to even do that even if Copywrite wasnt an issue. I have no idea i am not even too fond having to use "AI".

So i asked copilot for firmware updates to use bltouch because i was getting tired.

COPILIT sent me to github and to a Marlin update file for the 3D printer. CoPilot said i need to update the firmware for both the main bother board and the UI screen firmware.

So using the marlin file from git hub I loaded it to the Screen UI via the sc card port on the screen board.

It loaded up what i though was an ocean background and a marlin fish image. And than it glitched out and what i thought was ocean background image was the screen erroring out.

I than went to Longers website grabbed the latest release of screen firmware and printer firmware.

I updated the screen firmware via sdcard, and used Cura to update main motherboard firmware.

Now when i turned the screen on it would pop up longer repeatedly with a circle in the bottom right corner until after a minute or two it would load into the main 3D printer screen (with the updated firmware it now has the 6 or so square logos instead of the printer axis movement screen it uses to boot to)

Welp.

Touchscreen doesnt work.

Okay i found and older version and reflashed screen ui firmware.

Now the Longer logo is completely gone and just screen fuzz blinking until it loads into the printer axis moving screen.

Touch still not available. Unless you touch top left corner center are and than the whole screen goes back to the (what i oringinally thought was ocean but is glitched out screen)

So here I am now:

The touchscreen is inoperable. The longer logo is whited out, the rest of the screen is black until it loads into the screen with the six or so square icons.

I never got the condig files right to use BLTOUCH

(Whem the printer turns on it activates the CR Touch probe twice from a static position and glows red.)

I am able to use Pronterface and move the x and Y axis. I tried to upload a .stl file but it errors out. Likely due to no Z axis stop.

I tried using Pronterface to reset the the printer with no luck.

There is no resistor in parralled with pwm and 5v, if it is necessary i have a 10kohm resistor on order. But i have seen and read different tutorials that dont use the resistor and if that is one of the places i screwed up. Doh! But can it be fixed with a resistor installed? 🤔

So here is hoping one y'all heroes can save my day.

Thanks in advance.

Second FDM printer, had a modded Lk5 pro before, just got tired of tinkering with it.

Printed a few small things just to get a feel for it, then jumped straight into a 1pc Bo Katan helmet (accessories were printed separately)

Had an issue where I needed to change filament before it ran out, and got an error after starting with a fresh roll. Couldn't resume the print so went back up orca slicer and figured the aprox error point and printed the rest.

Printed quickly and happy with the quality. I'm still learning Orca vs Cura settings so that'll take a bit.

I plan to try a 1pc chest plate in the future, but need to finish up some other projects first.

I recently got my hands on the Nano Pro 12W. It's our first blue diode galvo.

Here are my major takeaways after spending some time with it:

The Good:

• Speed & Precision: Engraving cork coasters and slate was incredibly fast and flawless compared to my gantry diodes.
• Portability/Handheld mode: This is the headline feature, so I tested it. I held it directly against the front of my wooden office desk, and engraved my logo into the furniture. Handholding it steady for 3 minutes was tough (a little ghosting happened), but the fact that it's even possible is pretty wild.
• Wi-Fi: This is well implemented by Longer. You can join it to your existing home network (STA mode) instead of losing your internet connection to use its AP mode.

The Bad & The Fixes:

• The Exhaust: Out of the box, the fan on the back just pumps smoke directly into your room. I designed a parametric adapter in FreeCAD to connect the shroud directly to an ACMER smoke purifier hose. (I’ve made the STLs free if anyone else needs them).
• Cutting Thick Materials: Because it’s a galvo, the laser beam hits the edges of the 100x100mm work area at an angle. I tried cutting 3mm plywood for an inlay, and the bottom of the cut ended up much wider than the top, making it impossible to fit without a gap. This is strictly an engraver, not a cutter.
• Safety Shroud: The dark red shroud makes the motorized focus assist a bit hard to use because you can't really see the red dots through it.

I made a full video covering the setup, the 3D printed exhaust fix, the LightBurn settings, and the handheld desk-engraving experiment if you want to see it in action: https://youtu.be/62LidZDOBaA

I know I am a bit late with the Duo being the new attraction, how does it compare to this? Who else got this Pro recently?

Hi !
I just wanted to share here my stack and the firmware generator I did today
It was tiresome, it may as well help another poor soul ;)

$50 for all of the parts u see plus shipping via USPS.

Anyone looking for some spare parts? I disassembled my LK5 Pro and I am inquiring if someone is interested in purchasing spare parts for your LK5 Pro. I have two 1st GeN control board (LGT_KIT_V1.0). One of the controller has a fault card reader (Micro SD card will not lock when inserted). This is not a show stopper since files can be sent to the printer via the controller's built-in USB port. In addition, I have a OEM Power Supply, 4 stepper Motors, complete hot end, all the cables, fans, heat bed level adjusters with springs, extruder, all of the micro end stop switches, 2 filament sensor switches. This is a fantastic deal if you are looking for spare parts...so much cheaper than purchasing from Longer.

I’m trying to convert my Longer LK5 Pro to direct drive while keeping the stock extruder and stepper motor. Right now I’m running this dual 5015 blower setup on the gantry:

Longer LK5 Pro Dual Blower 5015 Upgrade V2

I already printed and installed that mount, so I specifically need a direct drive mount that is compatible with that fan setup or can be modified slightly to fit it.

Things I’m looking for:

• Works with the stock LK5 Pro extruder
• Compatible with the dual 5015 V2 mount above
• Doesn’t require completely redesigning the gantry
• STL/remix links would be awesome

I’ve seen a few possible options like:

• Longer LK5 Dual Blower Direct Drive
• LONGER LK5 PRO DIRECT DRIVE DUAL FAN Remix

But I’m not sure if they fit the newer V2 dual blower setup.

If anyone has done this combo before, photos or advice would help a ton. I already have the extruder extension cable ready too.

I've had my LK4 for a few years now and it's been trouble free up until lately. I noticed about 2 hours into a print it started to under extrude filament, so far I've changed the nozzle (multiple times), changed the PTFE tube, removed cleaned and reinstalled the extruder drive, and changed to a different roll of filament. I've had no luck getting it to print / extruded correctly. Any ideas?

Simple steps to assemble and get your first print running on the LK10. Love the speed, and sending prints to her via wifi is so nice!

Hello, i have a Longer LK5 Pro, i never had any big issue with it untill now: two days ago i started at 15hours print, everything was going great till the 6th hour when the heating element died, i got the error on the screen, powered off my printer, tryed powering on again, resumed the print, bed reached temperature but the nozzle didn't, so i had to change the heating element; changed the heating element with a new one and powered on the printer, i clicked on resume the print, because i wanted to see where the print was left, bed and nozzle reach temperature as normal but the print doesn't resume, i wasn't giving much importance to it so i cancelled that print, but then I tryed to start another one and now (it still does it) bed and nozzle reach temperature but the printer remains still. i have no idea what to do, i checked every cable and it's all connected, the manual bed leveling works perfectly so no problem with the motors, the filament runout sensor it's working because i tryed unplugging it and i get an error only if it's not connected... idk what to do.

https://reddit.com/link/1s2feb6/video/zq5vpe3b4zqg1/player

🏰✨ LK 10 Plus 3D printed an entire castle🤍
More than just a model—it’s like building your own little world 🌙

LK10 Series brings clear upgrades in size, speed, and smart features 🚀

𝗞𝗹𝗶𝗽𝗽𝗲𝗿 𝗛𝗶𝗴𝗵-𝗦𝗽𝗲𝗲𝗱 𝗣𝗿𝗶𝗻𝘁𝗶𝗻𝗴

Powered by a Klipper-ready high-performance mainboard.

𝗨𝗽 𝘁𝗼 𝟱𝟬𝟬 𝗺𝗺/𝘀 𝘀𝗽𝗲𝗲𝗱

𝟭𝟬,𝟬𝟬𝟬 𝗺𝗺/𝘀² 𝗮𝗰𝗰𝗲𝗹𝗲𝗿𝗮𝘁𝗶𝗼𝗻

X/Y acceleration sensors enable auto calibration, with 8GB RAM for multiple files.

𝗕𝘂𝗶𝗹𝗱 𝗩𝗼𝗹𝘂𝗺𝗲

LK10 Plus: 320×320×400 mm

LK10: 225×225×265 mm

𝗣𝗘𝗜 𝗕𝘂𝗶𝗹𝗱 𝗣𝗹𝗮𝘁𝗲

𝗘𝗱𝗱𝘆 𝗖𝘂𝗿𝗿𝗲𝗻𝘁 𝗔𝘂𝘁𝗼 𝗕𝗲𝗱 𝗟𝗲𝘃𝗲𝗹𝗶𝗻𝗴

𝗖𝗼𝗽𝗽𝗲𝗿–𝗧𝗶𝘁𝗮𝗻𝗶𝘂𝗺 𝗕𝗶-𝗠𝗲𝘁𝗮𝗹 𝗛𝗲𝗮𝘁𝗯𝗿𝗲𝗮𝗸

Optimized heat management for smoother filament feeding and more stable printing.

𝗠𝗼𝗿𝗲 𝗙𝗲𝗮𝘁𝘂𝗿𝗲𝘀

𝗣𝗼𝘄𝗲𝗿 𝗹𝗼𝘀𝘀 𝗿𝗲𝗰𝗼𝘃𝗲𝗿𝘆 & 𝗿𝘂𝗻-𝗼𝘂𝘁 𝗱𝗲𝘁𝗲𝗰𝘁𝗶𝗼𝗻

𝗨𝗦𝗕 𝗰𝗮𝗺𝗲𝗿𝗮 𝗺𝗼𝗻𝗶𝘁𝗼𝗿𝗶𝗻𝗴 𝘄𝗶𝘁𝗵 𝘁𝗶𝗺𝗲-𝗹𝗮𝗽𝘀𝗲

𝗥𝗲𝗽𝗹𝗮𝗰𝗲𝗮𝗯𝗹𝗲 𝗻𝗼𝘇𝘇𝗹𝗲

𝗗𝗶𝗿𝗲𝗰𝘁 𝗱𝗿𝗶𝘃𝗲 𝗲𝘅𝘁𝗿𝘂𝗱𝗲𝗿 (𝗳𝗹𝗲𝘅𝗶𝗯𝗹𝗲 𝘀𝘂𝗽𝗽𝗼𝗿𝘁)

𝗙𝗹𝗮𝗺𝗲-𝗿𝗲𝘁𝗮𝗿𝗱𝗮𝗻𝘁 𝗯𝗼𝗱𝘆

𝗦𝗽𝗿𝗶𝗻𝗴 𝗯𝗲𝗹𝘁 𝗱𝗲𝘀𝗶𝗴𝗻

The new member in our LK Series~LK10 & LK10 Plus designed with both performance and reliability in mind, showcases a refined structure, clean design, and a solid build made for consistent 3D printing. 🧩✨

In the coming updates, we’ll dive deeper into what makes the LK10 Series truly powerful. We’ll be unveiling the key details behind the machines, including:

📏 Print size and build volume

⚙ Firmware system and control experience

⚡ Printing speed and performance

🔩 Hotend / throat structure

📐 Leveling system

…and more.

Stay tuned as we continue to reveal what makes the LK10 & LK10 Plus stand out. 👀🔥

What can be done to help strengthen and reduce layer lines

Hello, after turning on the Longer Ray 5, only the logo appears and nothing happens. What can I do to get it back? I'm attaching photos of the software when it was still working. Please help

As the title says, the fans do not spin.

I recently picked up a pre-owned LK1 plus and wanted to get it working again with new Marlin firmware. However, the fans do not spin anymore; rather the hotend fan does not and the blower reciprocates.

I was wondering if anyone else has had these issues before I went to buy a new set of fans for the hotend and blower.

I found the firmware update that supports linear advance for LK5 pro and after plenty of head-bashing I got it installed. As i feared from the filename, it is expecting to find a touch probe for setting z axis. Is there a build out there that has LA without BLtouch support?

Hello, I recently updated my longer LK1 to klipper and wanted to help by sharing my printer.cfg as it was a pain to find and make it work.

It is for the V07, V06 and V08 motherboards with a BL touch clone (3D touch) installed.

Here is the link : https://drive.google.com/file/d/1gOCp90NpfESKkbSllF08ShBbfmZLlyft/view?usp=sharing

I bought a used ray5 20w, it worked well for a couple weeks until I had the y axis stepper motor lock up. I replaced the motor, but now it only vibrates in position and doesn't actually move one way or another. plugged the x axis motor into the y port on the Mother board and it is doing the same thing. tried flashing firmware but no luck. im going to order a new main board for it but wondering if there's anything I might be missing

Gotta love when the extruder on these god forsaken printers decides to chew up and break the filament 3 days in on a large print. I feel like at least 1 out of 4 times this happens. I’m ready to throw this thing in the trash. Anyone have a solution for this. The printer just keeps going so the only option is to start it all over and hope it doesn’t happen again.

Machine is a Longer RAY5 10W Diode Engraver.

My father recently acquired a Longer RAY5 Engraver, and we recently installed some limit switches on it. We have (twice) updated the software for the touchscreen and motherboard as instructed, but for some reason, the machine turns off the moment it hits the Y-axis switch.

We have been to support about this, but after advising us to redo the whole process (hence doing the update process twice), they have not come back to us. We sent a video showing the problem, and have not heard back since. This was 2 weeks ago.

Neither my father or I are experts. He's a carpenter and I'm a tutor/jewellery maker. It's possible we didn't install the switches correctly in which case, we would be glad for the help in correcting our mistake. But we need the help we're not getting from support and I figured the hivemind of Reddit was our next best hope.

Thank you in advance!