These Olympic sized "loadable" toy dumbbell handles are great for the little lifter in your life. I printed the 2" Olympic sized sleeves out of PETG while the 26mm handle is made of rubbery TPU. I've also done nylon as well.
(Files and Instructions coming soon)
The entire thing is supported by a piece of PVC.
Sleeves can be removed and put on a longer PVC pipe to simulate a barbell.
This stand goes on the head post of the Rep AB-3100 adjustable bench to enable the bench to be stood upright so that you can save space in your gym. This stand is designed to snap fit over the existing post or you can also remove the post cap and slide it down onto it as well.
If it starts to slide down due to variability in printer tolerance or frequent removal, add a piece of sticky tack to the inside edge.
Download the STL free here: https://www.thingiverse.com/thing:5327655
Note: We recommend printing it in PETG, TPU, or nylon flor flexibility of the built-in flexures. If you print in PLA, do not snap fit onto the post. Instead, remove the post cap and slide over as PLA lacks the flexibility for these flexures to function. It also help to add a bit of sticky tack underneath it to prevent sliding.