this mario warp pipe has a secret spot for storing your little things.
this model has a 0.2mm clearance, if your printer can't handle it, or you just don't know your printer clearances print this one instead it's the same model but it has 0.4mm clearance, so the threads can work properly.
i printed it on my flsun super racer and it took 5h to print without any supports.
if you printed this share the pictures in here or in social media and tag me.
happy printing.