QIDI PLUS4 3D Printer, Max 600mm/s High-Speed Printing, 65℃ Chamber Heat, Fully Auto Leveling, 370°C Direct Extruder with Integrated Nozzle, Support PPS-CF Filaments, Large Print Size 12"x12"x11"

Far from new into 3d printing. I've had my Plus4 for about 6 months now, gone through probably 20-30 rolls of filament at this point printing everything from household items, car parts and accessories, to wargaming terrain and toys. I've primarily run PLA, but some ABS and some CF Nylon through it. Setup was fairly easy, as was updating firmware. I'm not new to Klipper either, and Qidi is running a much more recent version of Klipper than my previous XY machine from TwoTrees. I was very happy to see that. So far the only issues I have had was that my printer was one of the models affected by the older solid state relays for the chamber heater. I had not used the heater at that point and was advised by a friend to contact Qidi customer support. They sent me the upgrade kit quickly and with coherent and easy to follow instructions. I'm no stranger to working inside a printer, so it was a straight forward and easy swap to complete. I have since used the heated chamber, and other than taking a long time to heat up it works fine. I found the cooling fan for the mainboard to be a bit noisy and not as effective as I would like, so I swapped that out for a 120mm Noctua 24v industrial fan. I run that at 60% and it keeps my drivers and mainboard cool at a much lower volume. Otherwise I have had no major issues with this printer. My goal when purchasing this printer was to have the ease of use and speed of a bambulabs, with the open source and customizable nature of Klipper, and this printer has not disappointed. It has by far been the most reliable printer I have owned. It runs at the full rated speed without issue and the stock slicer profiles have all worked extremely well for me. I am anxiously awaiting the Qidi Box multi-filament upgrade. I would have liked it just a little bit better if it had a 320x320 like my SP5 turned Voron, and the Z height is slightly lacking, but this has not really been a limitation for me as of yet. Most print files out there are designed for a more "standard" 256x256 build platform, so the 305x305 has fit everything I've thrown at it. I've been extremely pleased with this printer so far, it's been a reliable tool which is what I was looking for. On final notes, the community, wiki, and github for this printer is quite active and helpful, and Qidi employees are active commentors and posters in those communities. Generally seen to be actively helping people problem solve, which I love to see. Excellent printer if you want speed and reliability without being locked into proprietary BS firmware and slicer software. It's reliable enough to be a solid and useful tool out of the box, but still gives you the freedom to modify and make it your own.

Given the generally very positive reviews, I was expecting minor difficulties. As it is, I can't even make it to the input shaping and calibration step, since loading filament is impossible. It appears the hotend came factory-jammed, which is super. I'm getting ready to disassemble it, but it's sad that that's the first impression this device is giving. I'm sure it's all up from here, and I'll update this review when I have more information. At the moment, the printer is a paperweight, and an excellent one at that! FWIW, it's very pretty, well-lit, and quiet (especially in the "off" position, since it can't print). Update: I took the extruder apart, and there was something partially blocking the area above the gears. Weird, but no big deal. I learned a bit taking it apart, and while irritating, I feel like I can do more of my own maintenance at this point. Next problem: after running calibration and bed leveling, I tried updating the software. No dice. It recognizes the new software update, downloads some of it, then either fails or hangs. My Wifi is dicey, but still - it should work, and my other printers never had any problems. I guess I'll order an ethernet cable (they give one, but given where I have my printer, it's much, much too short). Third problem: even though the printer shows it's online, I can't detect it with Qidi Studio. Whereas prior printers would populate nicely and quickly, no luck here either. Again, my Wifi is terrible, but it still works well enough for cell phones and other devices to pull HD streams, etc. In any case, I think the physical cable will solve the problem. I'll report back for another update when I can! Next update: OK, turns out the Wifi had nothing to do with it. Even wired, the printer doesn't get past 33% installing the update and just hangs. I'll try an offline update, but yeesh. Even wired, the printer is undetectable in Qidi Studio. The link the printer provides via QR code doesn't do anything in the Qidi android app, just bounces back to the "add a device" screen. So apart from a passable and very quick bench, the experience so far has been pretty bad. I'll try plugging a gcode file in via usb and we'll see what happens. One problem at a time, right? Third (and final?) update: The "automatic" connection never really worked, but manually connecting to the machine's IP worked perfectly. Now that I know it's not just plug-and-play like other premium printers, we're good. I'm printing wirelessly, monitoring the print, etc. Print quality is near-Bambu so far. So for ease-of-use, I'm NOT going to recommend this to a new printing enthusiast - just get an A1 mini or A1 IMO. For someone willing and able to take bits apart just to get up and running, yeah, so far so good! In terms of value for the size and speed, it's pretty impressive. 4th Update: Almost a month in, and this printer has been a pain in my butt. I've had it jam and had to disassemble the hotend (good practice, but it NEVER happened on my Bambu). That's forgivable, but the firmware isn't. As-shipped, the printer can't perform OTA updates. In other words, you have to download the file, put it on a thumb-drive, and manually update it. No problem, right? Shouldn't be, but following the instructions on their Wiki doesn't work, and while the USB drive is detectable, no update files are detected (even when appropriately placed and renamed after downloading). This is pretty terrible, and a very, very bad user experience. Even if I get this working EVENTUALLY, I'm increasingly annoyed and displeased with this purchase. Why update the firmware? Oh, no reason, just without doing so, you can't resume a print that fails due to power outages, etc. I mean, the printer will offer to do so, but it'll demand re-homing before beginning, meaning that it'll crush the print and/or damage itself when it raises the bed to home it out. So... yeah. Basic functionality was missing when shipped, and that's not good, and the ability to patch away the problems... also doesn't exist, at least for me, and at least at the moment. I'll update if this changes. In addition, errors others have noted regarding how a bearing was glued in place and can come loose, and heating issues if you're trying to use the entire build volume, so putting everything together, I'm going to say that unless you're comfortable monkeying with a printer, don't get a Qidi Plus4 at the moment. Maybe a future production run will have updated firmware from the factory, better QC, etc. - but at the moment, I don't recommend this. Just wait for a bigger Bambu, IMO. Fifth update: I finally managed to sort out the update issue half by working with tech support and half by accident. It turns out one of the methods they suggest to use to update the device doesn't appear to work, at least for me but the other did. In the end, in theory now the +4 should be over the air updatable so I don't need to mess around with that again. And now we should have the ability to resume a failed print without destroying the remains of your failed print after a power outage. The main thing of note for this update is apparently the device doesn't have a filament runout sensor which is bizarre. If one is included, then it didn't work, at least for me, and I woke up to a half printed "Successful" print after my filament had run out. In general, the print quality is excellent. The speed and volume are excellent. The value is excellent. The quality control is ? And the features are all over the place. It wasn't TurnKey for me, but it's still a pretty good printer that I'm not sure I would recommend. 6-ish month update: I've been using this printer for Christmas decoration, parts to mount lights at home, and cosplay helmets, etc. All the results have been fantastic. Once this printer is up and running, it's been amazing - great quality, great speed, and honestly, the customer service has been really good - they've followed through to make sure everything was working, and that any replacement parts I needed (for a power board issue affecting 120v power users) were sent. I don't think there's a better value out there for quality and volume at the moment, and if I were in need of a large-format printer around 300mm^3, I'd get this again.

While there was a problem, thanks to Andy at Qidi, the problem was resolved quickly and all is now working well. Thank you Qidi and Andy.

Gran impresora excelente calidad de impresión a alta velocidad ningun problema imprimiendo con ABS Un especial agradecimiento a Andy de soporte técnico de QIDI por la excelente atención

Very happy with this purchase works very well

Absolute lemon of a product. Bed leveling doesn't work. MCU over heats. Start gcode breaks the nozzle. PTFE tube rubbing and breaking away. Tool head board overheats. Klipper version is dirty. I wish I returned this before trying to fix anything because now I've just spent money on this hot garbage

Estoy escribiendo esta reseña con 1 mes de uso, planeo volver en un año para actualizarla. El hecho de que sea una impresora con cámara cerrada ayuda bastante con la impresión de ABS y PETG, sin mencionar que la forma de usarla es bastante cómoda y sencilla, además de que es bastante rápida para imprimir. La cama por lo general es bastante adhesiva pero en algunos casos es necesario usar pegamento (viene uno incluido en la caja). Además, viene con dos tipos de boquillas, una de latón para los filamentos sencillos y una de acero negro para los filamentos abrasivos. Algunas de las cosas negativas que he visto de momento es que no tiene un "reinicio seguro" cuando se va la energía o la desconectas por accidente, entonces si estabas imprimiendo algo tendrás que iniciar desde el principio; la caja para guardar el filamento está en la parte de atrás, por lo que puede ser algo incómodo si cambias de filamentos constantemente.