Hole adapter 3mm to 4mm

thingiverse

I did not find 4mm rods to assemble the awesome rollout spice rack shared by @spongybob1958 here: https://www.thingiverse.com/thing:4826878. I found 3mm wooden rods instead. Therefore I created this small adapter that allowed me to connect the 4mm rods to the 3mm holes into both the bottom and middle rods (I did not print the top rod). Do not apply much pressure when inserting them as they may break. I suggest to first insert the adapters in both ends of the the wooden rods and then insert them into the 3mm rod wholes.