CNC Router Machine 4040-PRO for Metal Acrylic Cutting Milling, GRBL Control, Lead Screw Driven, 3 Axis Engraving, Working Area 15.7” x 15.7” x 3.1”

I LOVE THIS MACHINE! This is the best machine for the money on the market period. Here is my story. First I bought the Fox Alien rubber band CNC which was a huge mistake. I was busy with other things so it sat there unused until I got to it. I found out the motherboard was bad, they replaced it and quickly, they even gave me their new 1/4" bit set as a sorry for the issue, which was nice.Then I tried to cut 1/8" cast acrylic plastic and it would not cut it! I added 5 passes to cut 1/8" plastic, and it still would not cut it. Meanwhile I am emailing them asking how to fix this. Their rubber bands would skip and destroy every cut I tried to make.I finally gave up and they would NOT give me my money back on their product.So I bought the Genmitsu 4040 Pro for less money. No rubber bands, just solid metal screw drive. Same exact stepper motors and this thing is a beast. I surfaced my cutting board since the Fox Alien destroyed it. It cut is so smooth it is like a mirror finish. I love this machine. It will cut and it is so accurate, I love this machine. Yes it is not as fast as the Fox Alien, but who cares, it actually works, it cuts and anything. If it fits into the machine it will cut it. Obviously you have to work within limits but this is a beast of a machine. I love it period. Yes I relocated the power to underneath it so I did not break it off, not sure why they have it sticking out the side, but who cares. This thing works so good, get one you will be happy you did.

I purchased this machine on cyber Monday in 2023. I was looking for a CNC that had more stability, accuracy and repeatability than the belt driven machine I currently had at the time. I wasn't disappointed. The packaging was about the best I've ever seen, assembly was a breeze and it was square and level right away. The screw drive and linear rails make this quite rigid and reliable. I used it for about ten months when it stopped working. After contacting customer support and describing the symptoms it was determined that the power supply went bad. They sent me a new one free of charge which solved the problem completely. I can't say enough good things about the machine and level of support I received.

I do wood carvings in maple and wanted an inexpensive but good CNC router and after reading a number of reviews, chose the Genmitsu 4040-Pro. It's easy to set up and has a good design considering the price. I replaced the included spindle with a Dewalt 611 for additional power/ability to use larger bits. I've used it to make at least 100 different carves and have been able to make extremely finely detailed, large carves. I was able to get good support from SainSmart when I had an issue, and can happily recommend this to wood carving and engraving enthusiasts (I have also used it for acrylic, wax, and polyu foam, but haven't tried metals, nylon, or delrin) with a limited budget.

I have had a BobsE4 for about seven years now and this machine moves four times slower than it does for no reason at all. Customer support says the machine is fine so if you like a project taking 11 hours instead of 1 1/2 then this is your machine! I am very disappointed in this, it looks great and is made very well but it's very slow and then Candle software is very problematic. This machine is like buying the nice shiny sports car and finding out it has Yugo engine in it!

I received the machine in good condition, the packaging was superb,. unpackaged and assembled, clear directions. took around 30 minutes to set up. the software (Candle) that came with it is a bit lacking, but I use G-sender and V-carve Pro. This is my first desktop machine, so I am going to try my best to capture everything I have experienced so far.Pros:Good quality main frame, pretty stiff for a desktopGood packagingGreat customer serviceEasy to assemble with easy to follow instructionsVery quietCons:Extremely underpowered, most bits require 12000 or more rpm to work in optimal range, the spindle is only turning 9000Upgrade parts are almost as expensive as purchasing a new machine( spindles, extensions Etc.) would recommend the 1.5kw VFD spindle or trim router if you will be carving anything thicker than 1/4" pine. The stock spindle struggles to cut though on profile settings, deep v-carves and 1/4" clearing pocket cuts. V-bits and End mills that have a 1/4" shank are unusable with the stock spindle.Very little adjustments to correct Tram and squaringFinal thoughts:The machine advertises that it can cut wood, metal, acrylics and other soft materials, what they don't tell you is that the machine will not cut smoothly with 1/4" bits or anything thicker than 1/4" and that is testing the limits.All in all, it is a good starter machine, a little pricey for beginners, but bear in mind this isn't a commercial machine, if you are doing small carves with minimal depths this is a great machine. If you are seriously trying to carve heavier materials look to the more robust (and more expensive machines).If I can afford to purchase the 1.5kw VFD spindle I will return and revise the review. If Genmitsu/Sainsmart would like to donate the spindle set up, I will put the machine through its paces again, and give another review with the upgraded machine.