Your Jonsbo TK-1 case has more room for storage devices than you're told! With this bracket you can harness that extra space between your HDD/SSD bracket and side panel for two extra 2.5" drives without compromising cable management space.
When installing I strongly recommend doing all your cabling first, as putting cables on these drives after the HDD cage is in place is challenging.
I'll be honest, this is a difficult print and you can see in the pictures my first print turned out terrible as well.
I highly recommend using PETG for this for both durability and temperature tolerance, but PLA works too if you're careful while installing and know your temps around the hard drives don't reach 60'C.
The author marked this model as their own original creation.