This company ignores significant safety issues
I have owned a standard sized Shapeoko SO3 since October 2020. The components are of a reasonable build quality. The SO3 machine represented really good value, especially when compared with similar machines on the market. After I had assembled my machine, I found that machining marks on the workpieces could be a regular issue.
I used the Carbide 3D community forum to discover better ways to assemble the machine. In the event, I stripped the machine and rebuilt it and this took about 6 weeks, rather than the initial 3 days I had spent. By the time I had finished the complete rebuild, I had removed all machining marks from my workpieces. At that time I was cutting mainly MDF and softwoods.
I found the belt tensioning system to be very awkward and I felt it had been poorly designed. I modified my machine to take a different belt tensioning system, created by one of the Carbide 3D forum members. I now can tension all three belts to the same tension in about one minute.
Another modification I made was to remove the 18mm MDF baseboard and I fitted a 12mm thick Saunders Machine Works (SMW) aluminium tooling fixture plate with 84 x M6 threaded holes. I also purchased a couple of SMW modular vices. The vices and the tooling fixture plate contributed enormously to a complete change in machine rigidity and I could machine metal to within plus or minus 0.001" with ease.
I added a laser to my machine and was able to machine a variety of materials including softwood, hardwood, ceramic, glass, stone, slate, aluminium and brass. The machine was working very well and I purchased a Carbide 3D BitSetter tool length measuring device and a Carbide 3D BitZero stock X,Y and Z measurement device. This allowed multiple tools to be used on a single job.
I was also using Carbide Create and Carbide Motion software. The BitSetter occasionally produced problems in that it either caused the cutter to cut air some distance above the workpiece. Occasionally it would run a measurement cycle that was very slow and tried to measure the tool length from the top of its 95mm travel.
Over a period of time I saw quite a few complaints in the community forum about Z height and workpieces damaged while using BitSetter. I reported a few myself but these were usually ascribed to user errors.
Recently I experienced an unplanned and unprogrammed event where the tool just plunged through my workpiece at rapid speed. It was an extremely dangerous event.
I wrote to Carbide 3D support and supplied data and images but they were not able to assist. I wrote directly to the COO with a long complaint about how dangerous this event was.
Unfortunately, there is no log kept by the software and random events are not captured by the software. The BitSetter is a switch so it is a dumb item which has no intelligence. When things go wrong like this, it is just the software misinterpreting something.
The company are not looking at the software and they never have. Ideally, they should be torture testing their machinery until it fails. They can capture the event on video and see a log.
The software (Carbide Motion) is very clearly dangerous and having written several times recently and received no response, I have no choice but to make this issue very public.
I am very worried about the safety of users who have a BitSetter and use Carbide Motion. The software developer does not acknowledge the possibility that this is a software fault in the Carbide Motion . True ignorance is not the absence of knowledge... for we can all learn that which we do not know. True ignorance is the refusal to acquire new knowledge.
The SO3 machine is probably worth a comfortable 4 star rating. I can only give it one star because the company is deliberately ignoring what is a very dangerous safety issue.
I do not put my own hands anywhere within the working envelope when the machine is running. On YouTube, one can see many people who do put their hands inside the work envelope of a working CNC machine. This particular fault would cause a user to possibly lose their fingers, hands or an arm.
After repeatedly trying to contact Carbide 3D support via e-mail, as well as the COO of Carbide 3D, this is an inexplicable and hugely disappointing response to this particular dangerous event. It is impossible for me to recommend this company and potential users will have to make their own choices.
November 27, 2021
Unprompted review