My latest project. I find that the bed has some side to side slop due to the adjuster screw holes are a little larger than the screws and gives it the ability to shift. It is not bad but does happen from time to time.
I have built a platform add on that lets me drill holes that are snug for the adjuster screws and I also bolted it to the platform to add a little more rigidity.
This set up snugs the springs a little also. You do lose a bit up Z height but it is minimal.

The issue is worse on the QIDI but the FFCP was available at the time to take apart for measuring so it gets it first.


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