Hand Therapy Gripper Tool

When I was in therapy after both of my wrist surgeries, often I would find myself waiting for someone else to finish with the gripper my therapist had. I got fed up with waiting around for it to be available for use and designed this printable version. I printed a few in different colors and my therapist set them up at different strength levels by varying the amount/strength of rubber bands used.

The only no printed parts have reference links below, feel free to buy wherever you can get them from but you will need a handful of M3 heatset inserts, (2) 150mm 5mm steel rod per gripper, and (9) M3 dowel pins per gripper. (4) of the dowel pins are used to "mount" the rollers.

The only reason there are two differnt short roller bars is some of these colors shrunk more than others so I can to account for that be adjusting the roller bar sizes to prevent binding. 

Ive provided the original solidwork assembly, STEP of the assembly, and STLs for those that just want to print and use it.

M3 Dowel pins:
https://www.aliexpress.us/item/3256804069389017.html?gatewayAdapt=glo2usa
150mm (5mm Diamter Steel Rod)
https://www.amazon.com/dp/B082ZNS27M?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_1

Thank you for your interest in my page and models. Enjoy!