Ender 3 Z-Clamp

thingiverse

This is a quick and dirty Z Clamp for the Ender 3 and Ender 3 Pro, equipped with a single z-screw. Its designed to be installed in the 4020 v-slot extrusion near the top of the printer and accepts two coarse thread screws for the clamping. I work in EMS and so I spend multiple days on end at work so I like to take my printer to work with me. HOPEFULLY (I haven't tested this yet) I will be able to use the resume after power failure function to resume prints I must pause to commute. The Ender 3 homes the X and Y axis when paused but the Z axis must remain up and is subject to movement when the steppers lose power. So this clamp will be used to gently hold the z-screw and prevent it from turning while in transit. I don't know how much force this clamp will be able to resist, and YMMV depending on the lubricity of your z-screw, how tight you make it, and the forces exerted upon the z-axis in transit. So, no guarantees, but I don't think most people care about that. Just be careful, this is intended as only one part in a multi-vector approach to stabilizing the printer for transport mid-print, the majority of the other parts being "be careful with the thing" and such. You can use any kind of screws you want as long as the minor diameter is about 3.5mm and the thread diameter is around 4.75mm and is about 16mm from the point to the shoulder and the head is about 8mm in diameter. Feel free to modify/remix to accept fasteners of your choice. This was made with Onshape and is public: https://cad.onshape.com/documents/01c9961b5d8e676203d4c6c4/w/eb63489d3964561a26f2a636/e/0ea9766504a7393d515d7b2a