I have seen a working sprocket printed with a MIG welder and a 3D table, so resolution is not horrible. Minimum line width is still somewhat high even using the finest MIG wire, but definitely less than 1/4"
*Drew Van Zandt Cam # US2010035593 (M:Agapito Acosta) * On Sun, Mar 2, 2014 at 6:08 PM, Tom Metro <[email protected]> wrote: > This looks like a MIG welding torch mounted on the end of a robot arm: > > https://www.youtube.com/watch?v=NFF0QQIQDXE&feature=youtube_gdata_player > > I'm not sure why we haven't seen more devices like this. > > It appears to form a rod shape from the weld bead. All the rods in the > video are perhaps 3/8" to 1/4" in diameter. It isn't obvious from the > video is how it produces that shape, but I'm assuming the robot arm is > either moving the torch in tiny circles, or it is pausing in each > position just long enough for the weld pool to expand out to that diameter. > > It seems to put down materially really fast, but the video may be sped up. > > Amazingly it seem to be able to "draw" these rods at 45 degree angles or > even horizontal without supports, follow graceful curves, and spanning > tens of inches without falling over. > > I've only seen the video, and haven't tracked down any articles explain > how this works or why it was built. One unanswered question is whether > it is limited to this 1/4" resolution, or can it make finer details. > > -Tom > _______________________________________________ > Hardwarehacking mailing list > [email protected] > http://lists.blu.org/mailman/listinfo/hardwarehacking >
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