This thing is a spacer for a hydraulic chair that the piston is no longer working to support the chair at the desired height. The spacer is 25mm in height. Simply print enough for your desired height and continue using the chair. The inside diameter is 30mm, sufficient for most office chairs. Simply raise the chair, insert the large piece over the shaft, slide the cap over the body. Continue to add enough pieces until the height is what you need. I re-designed the cap and body so the peg is just 20mm in height; this keeps the cap from falling through. Re-orient the cap so the peg starts on the build plate.

Bambu Lab

Bambu X1C

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