door knob handle (round type knob to lever)
thingiverse
We should avoid touching high-touch areas frequently in this COVID-19 era, if possible. This conversion transforms a round door knob into a lever type one. You'll need M4x30-40mm bolts/nuts x3, with the length depending on the shape of the knob. --- 2020/5/12 update: all handles have been fine-tuned (a shorter handle was re-uploaded at 22:00 GMT+9). The hole position has been adjusted, a thin wall has been fixed, handle rigidity has increased, and the height of the shorter model has also increased. As a result, you may need longer bolts compared to the previous model. 2020/5/11 update: more shorter handles have been added (for heavier doors). The disc (flex) has been fixed. 2020/5/9 update (thin wall fix +α): the handle has been fixed, a short handle was added, and the disc type2 (flex) has also been fixed. --- This link may help you to push open a door without turning the knob: https://www.thingiverse.com/thing:4311785
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