
Auto Spanner
thingiverse
A handheld tool designed to tighten nuts on long bolts and rods where sockets cannot reach. The tool can be powered by either a drill or manually with a handle. This device was created to speed up the process of securing nuts on wind turbine threaded rods, making it easier to get the job done without wasting too much time. To enhance functionality, I added a removable handle that can be secured between two tightened nuts on the bolt instead of using a drill. The design may appear basic and utilitarian, but its simplicity ensures effectiveness in getting the job done efficiently. The tool is designed to accommodate various attachments from M4 to M12 ISO nut sizes. To assemble this device, you will need the following components: five small screws (approximately 3.0x10 in length, cap head preferred but not required), one M8 skateboard bearing, one or two M8 nuts (four if using the handle), an M8 coach bolt with a minimum length of 50mm (though longer is better), and a small amount of grease to be applied to the top and bottom rings of the large gear as well as on the gear teeth for smoother meshing. When printing this design, it's recommended to use high infill settings for added strength. I will soon upload updated photos of an improved version of this device.
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