The beta test team for the WonderMaker ZR and ZR Ultra has ended its collaboration with the manufacturer. In a joint statement published on Facebook, the testers give a negative assessment after several months of intensive work. They consider key design and firmware issues to be unresolved and, out of a sense of responsibility to the community, no longer wish to recommend the devices.
The team consisted of experienced users with backgrounds in 3D printing, mechanics, electronics, and firmware development. According to their own statements, well over a thousand hours were spent on test runs, log analyses, and structured feedback. Early on, the focus was on classic weaknesses of moving systems: cable routes without sufficient strain relief, cable bundles that were too thin, and connectors that were unsuitable for constant movement and vibration. The result was broken cables, loose connections, and sporadic failures.
There were also mechanical issues. Complaints were made about drive gears and tolerances in the design, which led to problems with axis alignment and inconsistent print quality. On the software side, the team reported reproducible firmware crashes and malfunctions under certain operating conditions. Logs and test cases were provided, but many errors continued to occur or were only poorly circumvented.
According to the statement, there were only minor hardware hotfixes, while fundamental design decisions remained unchanged. The testers are particularly critical of the fact that the series devices delivered apparently do not incorporate all the improvements discussed later. This means that new customers are confronted with problems that have been known internally for months.
In addition, the team criticizes the handling of defective beta devices. Replacement parts were offered, but at times with significant shipping costs, which caused discontent among unpaid beta testers. The team also described communication as sluggish: promised devices were delayed, information was provided irregularly, and inquiries remained unanswered for a long time.
A conflict over the publication of critical test results by a team member exacerbated the situation. Only after a public statement was a response given, accompanied by a request to delete the post. For the testers, this marked the point at which trust in open cooperation was lost.
The complete statement can be read here.
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