pic: ???
 

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???? :confused:

You dropped a modified punch on a table, and it stuck into the wood like an arrow? That's what it looks like to me...

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Based on the size of the rivets in the picture, my guess would be a shaft from an installed rivet, probably much higher up, with a very lucky drop......

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holo

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Looks like the shaft off a rivet considering the size of the rivet and how the end is cut.

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It's an octagonal frame and belly pan, standing on its side. Given the lack of wheel cutouts along the edge closest to the table, and various holes placed elsewhere, it is uses four omni wheel, one at each corner short edge. The rivet mandrel stabbed into the table is just a distraction.

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Swerve is also a possibility. The swerve modules might attach at the mounting holes in the bellypan. My question is, why does all your tubing and gussets look like it's been faced off on a mill or lathe?

That's a very pretty bellypan, by the way.

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Looks like your table........





Just got shanked!

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Also, why the heck are you facing down your square parts on the lathe in a 4-jaw chuck? How bored are your students and who taught them that was a thing in the first place?

Only you would notice that :P.

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They could have at least had the decency to properly center the parts in the jaws, but no we'll put it in offset and not worry about it.



Unless..... maybe they did it in the 3 jaw?

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You have some very nice guessing skills

We use circular Scotch Brite pads with a drill press to polish our metal with swirls. It's fast, cheap, and looks amazing!

And thanks!


I have absolutely clue what your talking about lol

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If you look at the far corner, there is what appears to be a bearing hole in the 45* piece. I would assume that is where an omni wheel would go for 4-wheel kiwi.

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Ahhh, ok. The circular patterns your Scotch Brite left look very similar to if you'd faced it off on a lathe, which would be an enormous waste of time. But hey, it looks awesome! I hope to see some videos of it in action when it comes to that time.

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Whoa... Not only is the rivet stem a ruse but the frame is too. If you carefully look through the holes in the belly pan then there is indisputable evidence that... it was Colonel Mustard in the dining room with the candle stick! :ahh:

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I see what you did there...



Seriously though, it seems unusual for the extruded tubing and the plate gussets to have such similar finishes; most use 5052 for gussets. Are the gussets made of 5052 that really looks like that after treating with the scotchbrite pads, or did you use something else?
And...how do you secure the scotchbrite pads to the drill press chuck?

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Nice.
I first thought tank drive, but the holes did not line up with my theory.

Dave

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We used .09" thick 6061 for the gussets. They pretty much blend in when you polish them with Scotch Brite pads haha.

Just google "Scotch Brite circular pads" online. They come with a these circular pads that screw onto a holder that you can use in the drill press. Feel free to PM me for more info.