RATTMMOTOR HBX1605 200mm / 7.87" Linear Motion Guide Actuator Double Linear Rail Slide 1605 Ballscrew Motorized XY XYZ Linear Stage Table Nema23 Stepper Motor for DIY CNC Router Engraver Machine

I was hoping to replace the z axis on my DIY CNC machine with this but the rail blocks had way too much play to even be remotely usable. After mounting the spindle, I was seeing almost 1mm of deflection at the bit due to the linear rails and blocks having quite a bit of play. Depending on your use case, it might be fine but for my intended design, it was a fail

Nice work As intended

We ordered the same part numbers (identical part numbers) about a month apart but received two different geometric configurations. This inconsistency has caused delays in our project timeline, as we expected identical parts. Additionally, the second part appears to have been used before. Please clarify whether there have been design changes or if this was a fulfillment error.

I received the item quickly and as described but the quality of the item is not acceptable IMA. the linear rails only have every other screw making them more likely to bend or break.