Many of us adored big construction machinery as children. Once we got past the cute, tiny age, it became uncool to gasp with shock and awe at diggers and bulldozers for some reason . [Ivan Miranda] still digs the big rigs, though, and built himself a giant 3D printed excavator that looks like brilliant fun.
Why did Lego never make MegaTechnic blocks? [Ivan] shows us that such a toy is badly needed, for all of us.
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The build relies on [Ivan]’s giant 3D-printed Lego-like assembly kit. It lets him simply bolt together a bunch of plastic girders to make the key parts of the excavator, including the base and the digger arm itself. The digger arm is controlled with linear actuators of [Ivan’s] own design, which uses servos and threaded rod to do the job. They’re not as cool as hydraulics or pneumatics, but they get the job done well. For propulsion, [Ivan] built a tracked drive system again using his unique Lego-like blocks. The tracks were tedious to assemble, but add a lot to the excavators Awesomeness Quotient (AQ).
The overall build is quite slow, and more than a little fragile. It’s not quite ready for hardcore digging tasks. In reality, it’s serving as a test bed for [Ivan]’s 3D-printed building blocks that get better every time we see them. Video after the break.
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- Source: https://hackaday.com/2023/02/17/giant-3d-printed-excavator-is-awesome-but-needs-work/
