Longer LK5 Pro 3 3D Printer 11.8x11.8x15.7in Large Printing Size FDM 3D Printer Fully Open Source Motherboard Upgrade TMC 2209 with Resume Printing 3D Printers 95% Pre-Assembled Ideal for Beginners

I’ve waited purposefully to review this printer by Longer (lk5 pro). After nearly 300 build hours on it and tons of learning curves I can say it definitely has no issues printing. I’ve printed PLA, PETG, ABS and even the notorious TPU filaments through this and though there is some trial and error involved I can say it’s solid. Its stable heat range seems to max at about 250c with the bed able to stay stable at 90c after that it has problems and fails. I am unsure if putting an all metal extruder on with allow it to get hotter for those exotic filaments but as of now I have no need to check that. The build plate is pretty large too at 300D300W400H allowing those bigger and taller prints to fit. It comes pretty much together with just a little bit of build work involved by fairly simple, the hot bed plate is also fairly nice and seems to do a good job although I’d recommend the first print you do, be a scraper as the metal scraper provided can easily dig and gouge the plate if you’re not careful. It does seem to leave a bit of ghosting residue but most of the time a good wipe with 91% propylene alcohol does the trick. (Pro tip keep you bed warm when you do this) Now for the cons, the bed leveling is rough which is normal on most printers. Manually turning the nobs is barbaric in my opinion and with a machine that is a make it or break situation, literally. Prints turn bad if you’re off .2mm sometimes depending on the detail even .1 makes a huge difference and to rely on a piece of paper and my own judgement is crazy in this day and age. Luckily you can buy a autolevel sensor called a BLTouch. However be warned the information on this is very difficult to navigate. You will need firmware from longer which you request via emailing them. Then you will need pronterface software to both enable and calibrate the leveler to your machine. That’s after you become an electrician and wire the sensor into your main board which can brick the printer if you are careful and ground the sensor incorrectly. And there is a dozen main board designs so you have to be careful not to read the wrong schematic as well. I will say the customer service is top of the line though, and helped me through all of my troubles so don’t turn away or get frustrated if something doesn’t go how you wanted it too. They will help you along the way and are very friendly in doing so. In closing it’s a great beginner printer at a good cost point and is highly upgradable as well, for the price you’re getting such a good. Buy an enclosure for it!!! I cannot stress it enough these plastics thrive in them and it makes such a better quality print. Hope all this helps and have fun!

Avoid this printer at all cost. This is my first 3d printer and I'm sending it back. First couple weeks, it seemed like it printed great. Now I have nothing but issues. Clogs, spaghetti, stopping mid print even though there's plenty of filament, a constant need to level. There's a reason this thing is cheap.

ok when you buy this do not use the paper quick start guys it is useless, take the time and play the videos that come with with it, they are much better, not complete but better, also I had to buy more screws as it was short several, not big deal they are cheap but you guys putting these kits together really need to be sure you give us all the screws we need to do the job. also bus a few 4m nuts they slip inside the track as they only give you 2 clamps and you meed more. Also if you are not good at building things with poor instructions this may not be for you but all that being said. After I got it together, this really is a nice printer and prints really well. My only complaint with that is the glass heat plate does not release the part well. I found if I can put a little space in a cornet that stands off from the bet on my part the thickness of the scraper it makes it easier to force the part to loosen up. Dont get mad a prt or force it you will break the glass and have to buy a new one, just let it cool way down and work with the scraper. At any rate the printer itself is really good, the glass service is not a good idea but I have other ideas to handle that like perhaps a flexible plate from another printer and different clips to hold it might work. All in all this is a very good printer in spite of the problems and given the problems are easy to fix well worth the money

Havent used it yet BUT the instructions were terrible! There is alot of pictures that are black and white and dark. Almost to dark to see. There are parts included that are not mentioned in the instructions! Instructions suck! As far as the printer is concerned, its well made and sturdy but as far as the function, I dont know yet. There is alot to assemble! So far, I do not recommend it.

Big, very big. Great for printing cosplay items and masks/helmets. The prints are very high quality, the layers are so thin you can't see or feel them. Great for functional parts, struggles with small figurines, mainly the hair and fingers. Heats up pretty fast, even in cold weather, the nozzle has no issues keeping the temp perfectly stable. Durable, I tried printing on a shirt and it got caught up in everything and made grinding noises, but the noise went away after a reset. Had a print warp and the nozzle knocked into it, knocking the entire bed several inches, yet the nozzle was fine and nothing got bent. Another print came loose and stuck to the nozzle while it ran, injecting PLA into the nozzle enclosure and covering everything, yet it was easily removed by pre-heating the nozzle and letting the PLA soften to remove it. I hate the leveling knobs, they are inconsistent and can change tension based on room temperature, but never move around during printing unless there is a big temperature change between springs. I've bought 2 so far, one had a warped bed, which sucks, but still works because the filament fills the gaps in the first couple layers, what a pain to level though.

I had a great experience with Longer 3D's support team. They were incredibly responsive, knowledgeable, and patient in helping diagnose an issue where the filament was melting above the nozzle instead of feeding cleanly through it. They quickly explained the likely causes such as heat creep or improper cooling, and walked me through clear practical steps to fix it. Replacement parts were covered under the warranty of the printer Their expertise made a frustrating problem much easier to understand and resolve. Overall, their customer service is reliable, and very well-informed. I'd definitely recommend them to anyone needing help with their 3D printer.

I have had this 3D printer 3 months now and it is the worst printer ever. The plate NEVER stays level, the screws underneath that you use to level the plate ALWAYS fall off, the printer never works and anytime I want to make something I spend hours trying to level the plate. I would not recommend this printer to my worst enemy. Just don’t find a different printer.

We have loved our 3d printer. Have had it for two years now as a hobby printer. Even when we had problems we have reached out to customer service and they were so helpful it helping us trouble shoot and get it all fixed up