Upgrade straight one-way manual hand drill (First time not show)

thingiverse

2021/3/10 I upload the f3d file. If you want to modify it you can do it yourself. Also, do me a favor. If you like my designs. Please watch my video a little longer. It will help me join the YPP program. I need 4000 hours to start. Thanks a lot. Have a nice day. 2021/2/4 I have uploaded them two days ago. But they are not shown on my design page. I think they can be seen anyway. But it seems not correct. Now I upload them again. Someone told me that the bolt support layer cause problem. Now I add a clean bolt model also. You can choose one by yourself. Summary I have designed the first straight one-way manual hand drill in the world several days ago. It is powerful and handy. After I have used it especially from the fan’s comments, I realized that I can upgrade it a little for better usage. No. 1 Handle part I change the handle part to a screw fixed part. It is easier and convenient to use No. 2 Add different drill size option I add the different size of drill which covered the 0.8 to 4.0 mm. No. 3 Modified a little at the stall coupling part Enlarge the space between the small cylinder space. Now it is easier to couple them together between the cage and nuts. Detail information on Youtube： https://youtu.be/1lOdbRMHBew