This ratchet with require two springs (1/4" x 13/32") or roughly (6.35mm x 10.3mm), you can find them on Amazon in spring assortment kits. I used to M2 x 12 screw for the lid.
Printing the parts is pretty simple. The main handle/body of the ratchet needs support. everything else should print easy. The model may not work right if the parts are not dimensionally accurate. I designed the model to have 0.2mm tolerances, so if your printer can handle that you should be fine.
Assembly is pretty straight forward. Just install all parts as you see in the photos and compress and insert springs between pawls and ratchet body (they should snap into place). Press lever onto cam from other side and put the cover on.
I also designed a flexible version. The only difference is you will need a M5 screw and nut to put it together.
Please give me feedback on my design so I can improve it!
The author marked this model as their own original creation.