Update to this review. I got my first model to print. I decided to print the Siraya exposure test after switching to the Elegoo std gray resin V2, recommended for LCD printers. I used the settings for their standard gray resin without changes and got a very successful print. The lines look sharp, and wording is clear. It took a couple of sessions watching YT vids to get here, but the print quality is very nice. For the record, I've got about 3 years on my Photon Zero, a truly newbie printer. I bought this one because I don't do large prints and had seen that Anycubic seemed to be having quality issues, including the one I bought. I truly don't understand how the test print out of the box should fail. Mine printed in the vat. Just glad I checked before it went the full time, just enough for me to see that nothing was printing. In the 3 years I had my Zero I only had one total failure like that. Disappointing. Now, like others I have to figure out what the problem is. I'll try another resin next. Not happy at all. Read more

At the last second i decided to order a replacement instead of returning it. I did see several people on-line had issues with their original unit. Based on the new one, I'm upgrading from 2 stars to 4 stars. It seems the original unit did have some issues. This one worked more as expected. I can't give it 5 stars because the lack of documentation is almost inexcusable. Elegoo provides almost no documentation that will make your first (or any other) print successful. The information they do have is dated, conflicting, and really of very little use. I almost took off 2 stars. It's that bad. However, once you figure things out on your own, it gets better. 1. I think one of the biggest problems is they provide no resin with the product. I understand that from a cost perspective, but where they fail is in recommending what resin you should start with. If you are not going to include it, then at least recommend something that will work with your included test build. Ignore the manual where they say you can just plug it in and print the test rook. Unless you have EXACTLY the resin they used (which is not listed) and the same temperature range (again not listed) there is a good chance your first model will fail badly. For example: The resin I ordered is manufactured by Elegoo. The default print (the rook chess piece) is set for a 2.5 second exposure. My resin requires an 8 second or greater exposure. That's just one setting. None of the defaults would work with the resin I ordered. 2. Leveling this thing is a beast. Once you figure out what kind of resistance the paper should have you are good, but there is nothing to guide you. You just have to figure out what level 'feels like' when you pull on the paper. In my case it was a lot more tension than their videos or documentation led me to believe. Also why in the hell did you not put in the manual that you need to tighten the screws in a certain order. I had to find a YouTube video to figure that one out. 3. Please provide the link to your Resin settings. It's pitiful I had to find this through Reddit and not your own documentation. It's a G-Drive link to a spreadsheet that gives you the 'magic' settings you need to use with their different resins and printers. Why you would not have the most critical thing one needs for a successful build clearly documented and easily available is beyond me. 4. Two functions are all but undocumented. Number one is you can hit the pause button during a print to see what is printing. You don't have to wait 4.5 hours for the Rook to print to see what it's doing. Hit the pause button and the unit raises the platform. You can see if it's doing anything or not. The second is the tank cleaning function. It basically makes a very thin layer across the whole bottom of the vat. Much easier to pull up in some cases. 5. Provide instructions or at least links to how to actually use the software you are providing. The only thing your documentation tells me is how to activate it. 6. If you choose to do none of the above, then please advertise that your printers are not for beginners and you need a lot of training to use them successfully. I had no expectations that 3d printing would be plug and play, but it's more like plug and pray. That's not good. Elegoo if you get nothing else out of this review, then setup your customers to have a successful first experience instead of fighting to figure it out. With that ALL said... once it works... it's pretty darn good assuming you have a fully functional unit and you have all the information on your resin. I just hope you don't get a bad unit like I did because it makes it 10x harder to figure out how it works. Original review: I REALLY wanted this printer to work. But in the end, it simply does not. I literally tried everything I could think of or read on-line, and the results were always the same. Sometimes I got the first layer, most of the time I got nothing. Cleaned the vat and everything more times than I can count. Tried every simple build I could find... absolutely nothing but drips at best. Tried multiple types of resin. Room is temperature controlled and well ventilated. It really appears your luck with this is just that. Luck. It's hit or miss if it works. From what I can read if it works, it does great. And if it does not work (as in my case) it's just an awful experience. Read more

Ni 4 meses duro, se apagaba sola al encender la pantalla para imprimir la primera capa, solo use 2 litros de resina. Ya no puedo imprimir. Da muy buena calidad en las impresiones pero parece programada para fallar, un amigo compro la misma maquina y fallo igual como a los 4 meses mismo problema se apagaba al encender la luz. Daria cero estrellas si se pudiera. Read more

Gran compra. Vale la pena. Read more

Update #2 - I figured I'd reach out to Elegoo customer service. Within 24 hours they're already getting me a replacement LCD. I'm actually really impressed. Customer for life, now. <3 3. Wanna know how your print is doing? Just pause the print. It'll raise the build plate all the way up and you'll be able to check the status. Wanna resume? Hit the play button. Just try not to keep it from doing its thing for too long, especially in an area where the resin might be in danger of curing (though I'd keep the machine out of the sun at all costs tbh) Also - you can hollow out prints to save resin, time, money, and weight. It's frustrating at first because you'll learn about suction cups and drain holes. Holy cow, they're annoying to figure out lol. This is why I like Lychee's slicer the best - the drain holes are awesome and there are even "objects" you can put into the mesh of your STL to prevent hollowing and to plug holes. They're called "blockers" and work great. I hope this helps. Overall, I think the print quality of this machine is stellar. As good as any WotC mini I've bought at the store. It's satisfying to use, though the frustration behind the very vague manual is there. That's the worst part, in my opinion. Although, Elegoo, I have experience with technical support, troubleshooting, and customer service support. I'd be happy to help you write something a little more in-depth that might help you avoid returns and refunds. Just a thought! TL;DR: The Elegoo Mars 4 resin 3D printer is a great tool that prints high quality miniatures, model kits, and other objects with the added bonus of potential profitability. While the instruction manual lacks depth, personal tips include exploring software like Lychee Slicer, managing print failures effectively, simplifying build plate maintenance, monitoring print progress, and utilizing advanced techniques for efficiency. Despite manual frustrations, the printer's superb print quality makes it a worthy investment for hobbyists and professionals alike. Read more