ELEGOO Mars 4 MSLA 3D Printer with 7" 9K Monochrome LCD, UV Resin Photocuring Printer, Multiple Print Modes, Printing Size of 6.04 x 3.06 x 6.89 inches

I spent a lot of time researching 3D printers a few years ago and settled on the Elegoo Mars 2 and have not been disappointed. it has performed flawlessly. I design and produce products for the scuba industry and are available in 90% of the dive shops, Aquariums, Water, resorts and Theme Parks, in the US and World Wide. Occasionally I have to produce a limited run of a design or a prototype and the Mars 2 has been perfect.I decided I needed a bit more capacity with a slightly larger build plate and the Mars 3 seemed perfect for the task. Most of my manufacturing is sub contracted here in the US but the 3D printing is my personal project and is based in AZ. The printer arrived exceptionally well packed but there was a minor flaw in the touch screen. I stated using the printer and was not disappointed. From the very first print to this day, I have not experienced a single fail! For me a fail is lost time and money and I am often on a deadline with these small runs.The small flaw in the screen became bothersome and at the angle the printers are installed it became a problem for me, so I ordered a replacement and exactly the same problem.. I discovered it was an issue with the way they were packing the printer at the factory. The packaging applied pressure to the touch screen and it eventually created a bubble and moire pattern on the screen. Not a problem at some viewing angles but it was an issue for my setup.For me, the measure of a company is not based solely on the quality of their manufacturing nor their QC but the ability to respond to a customer service issues and resolve it effectively and in a timely manner. In this respect, Elegoo is EXCEPTIONAL! Rather than return the product, they immediately sent me a replacement screen, which is easily installed, and followed up to make sure all was OK. I have been absolutely impressed with Elegoo’s response and follow up, and they now have a customer for life. I also purchase their resins exclusively and I ascribe the combination of World Class resins in a World Class printer for the excellent results I consistently achieve with their products. When I need to print, I select the file and push print and I know that in a few hours those items will be ready to ship. I use Elegoo ABS Like exclusively in the Mars 3 and Elegoo Water Washable in the Mars 2 for prototyping.One final point, I installed a flex build plate prior to firing up the printer for the first time. I use both magnetic sheets (current sheets are 1/3 thinner than the one on my Mars 2 purchased a few years ago) one on top of the other for maximum adhesion, and have never had to touch the plate with a scraper. They remain pristine and produce a factory finish when a model is directly on the build plate.In summary, I give the Mars 3 a 5 star rating and Elgoo a 5 star +++.If you are looking for your first 3D printer or additional printers for commercial applications, look no further than Elegoo!

Awesome printer. Small, but packs a ton of power. Amazing print detail and very user friendly. Perfect for printing tabletop minis and smaller terrain.

Update - 8/29/23 - I ended up not having a chance to really troubleshoot my issues with the printer after getting it. I got frustrated with the failure of the FEP, then our family moved and it was packed away for nearly a year, and I just didn't have time to mess around with it to get it figured out. I was just about to give up and give it to someone who had more time to getting it working, but decided to try one last time to get it to work. I'm glad I did! It turns out that the resin I had started using initially was a resin that, while it sort of worked in this printer, it was made for a specific brand of printer that operated a little bit differently than the Mars 3. The information on the resin was lacking, and I hadn't realized it, and it caused the resin that was partially cured to overheat while printing, which is what caused the FEP failure. Once I realized it might have been the resin, I switched back to some Sunlu resin I had still, and not only did it succeed with a print, I've had about 15 successful prints since, with the only failure being a pre-supported model that had an issue with the base (so it was the stl file and not the printer that caused the issue). With the speed and quality of the prints I've gotten since I was able to figure out my issue, I've bumped this back up to a 5 star!I am not new to 3D printing. Previous to the Mars 3, I had an Anycubic Photon Mono and an Ender 5 Pro FDM. Love the Ender, and really liked the Photon - EXCEPT the maintenance nightmare that it was. It seemed that after every third print, the FEP would get holes, or the build plate wouldn't be level and cause a failure, or the LCD would go out. The last straw was the current LCD was starting to go (just replaced it 2 months before it developed a bad spot) and the FEP leaked and damaged the rest of the screen. Suffice it to say, I was NOT pleased with how often I was having to replace the FEP film, nor the fact that I was going to be on my third LCD in less than a year of printing.That brings me to the Mars 3! I did a lot of research for printers in the Mars 3 price range, and decided that the Mars 3 sounded attractive enough to fit my needs and sounded like it was a little more friendly in terms of maintenance. One of the first things that made me want to get it is that it comes with a factory installed film on the LCD, and it ended up being something that I would need rather early on.This is where the -1 star comes in, within 7 attempted prints (2 failures due to using new resin I didn't know the settings on), one of the prints had a piece that stuck to the FEP. Usually, that's not a huge issue, but for some reason, the print as it kept going developed a sharp point and ruptured the FEP. Of course, this means that resin leaked onto the screen during printing and cured. The film on the screen worked! I just had to basically peel off the protector and carefully get the resin off the screen. Far easier than what I had to do with the Mono out of the box, and that film saved me from having to get a new screen... AGAIN. But, unfortunately, there are no direct replacements for the screen film that Elegoo produces, which is where that one star comes in. It's FANTASTIC that the screen was protected in this case, but it also sucks that there isn't a way to get a factory authorized screen protector to replace it once the inevitable happens. Good thing is I know about screen protector films now, and that I would eventually need one, so I already have one that I bought just in case this happens (Mach5ive). I haven't had a chance to install it and get back to printing, but once I get the new FEP installed as well as that I should be good to go again.Pros:LCD screen protector out of the box4k resolution - I printed some TINY things with one of the first prints, one being a pirate girl that has a tiny pirate teddy bear on her back, and the details it brought out blow the Mono away.Looks niceFactory screen protector for the push button screen - this is a weird Pro, I will admit, but I didn't take the film off of the touch screen for the buttons. I can still push the buttons through it, and this will keep the screen from getting mucky if there's ever a drip of resin that gets on it!I love that the screws for the vat come out, instead of being embedded in the base of the printer like the Anycubic. Means it will be easier to clean them if/when they get resin on themMetal area around the LCD - will make clean up easy if some spills, even if it cures, can just be scraped off and cleaned.Cons:Plastic base - I don't know how I managed it, but a few drips of resin went down one of the sides of the printer already and cured there before I even noticed it. With having a plastic base, this will never come off.FEP - I know this is one of the things that come with printing with resin, but having an FEP fail after less than 10 prints is disappointing. I know people who say they've been using the same FEP for a year, and I can't for the life of me understand how that's possibleOverall, though, I am extremely please with this purchase. Out of the box, it was FAR easier to get things set up and going than the Mono, with only needing 2 test prints to get the settings for the resin I was using tuned in. The detail on small items is amazing as well. Print times are pretty much the same as the Mono, for the most part, so there's no speed improvement from 2k to 4k (not that I was expecting any).