Hi, My cat scratch post insert broke. I inspected to find the fault was a plastic moulded piece that housed a nut that was inset into the plastic moulding. So created a universal fitting for dimensions 58mm fitting. You need to drill out the whole and then set in the nut (I used a glue gun). Hopefully it will last but if not I will post an updated design version here. The design specs are PLA printed on Prusa i3 MK3 58 mm diameter 45mm height 21mm hexagon - full opening (to fit any size nut if glued) 3mm tickness (main outer wall) 4mm inner wall (approx) Please do add comments as it helps others. Thanks.
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