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Mitchell Lichtenberg
@mitchell-lichtenberg
Eminent Member
Joined: Jul 8, 2025
Last seen: Jul 14, 2025
Topics: 1 / Replies: 25
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RE: AR2 from Italy

Hi Alessandro, Wow, you're going to make the parts yourself! Please post pictures of your setups; I looked into this and studied the type of fix...

2 months ago
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RE: Mitch's AR2 Build Log

Yeah, I'm very pleased with how it came out. It was a great excuse for me to go meet the andodizers; they sponsor our FIRST team (we anodize most of t...

2 months ago
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RE: Mitch's AR2 Build Log

I think the color scheme is going to work :-) I have access to a laser cutter, so I might cut the flat covers out of translucent green or solid ...

2 months ago
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RE: Mitch's AR2 Build Log

More printing underway tonight, attempting to print both J5 side spacers at the same time, we'll see what happens. Meanwhile I have cut the flat...

2 months ago
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RE: Mitch's AR2 Build Log

Hmm. Looks like I won’t be able to heat the material to get the bearings to fit. Heating anodized aluminum will cause the finish to crack since the co...

2 months ago
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RE: Mitch's AR2 Build Log

Looks like, at least for my aluminum kit, the hole for the cut-off square head M8 screw is not tapped in the J1 Platform part. You might want to...

2 months ago
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RE: Mitch's AR2 Build Log

Happy New Year All! I'm making good progress on my build; after a little research and some experimentation with some other anodized parts, I tri...

2 months ago
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RE: Mitch's AR2 Build Log

Assembly has been smooth so far .... Actobotics timing pulley installed Starting to look like a robot!

2 months ago
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RE: Mitch's AR2 Build Log

The J2 spindle is putting up a fight to get the 30206 bearing onto it. Trying a more extreme temperature difference, but I may need to throw it on the...

2 months ago
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RE: Mitch's AR2 Build Log

Wow, that J2 spindle is a real troublemaker! :-). I turned it down in the lathe, then found out that the non-flange end is not tapped for M3. Yo...

2 months ago
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RE: Mitch's AR2 Build Log

Greetings Chris, It's possible that the anodizing killed the threads, but it didn't affect any of the the other M3s there. Andoizing does add th...

2 months ago
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RE: Mitch's AR2 Build Log

Final status report for New Year's day: I believe I have finally won my battle with J2 Spindle, I was able to get it mounted on the lathe and ce...

2 months ago
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RE: Mitch's AR2 Build Log

Here in the Silcon Valley (South SF Bay) I paid $120 to have 24 pieces anodized. It was the minimum charge from the vendor, mostly to cover the setup ...

2 months ago
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RE: Mitch's AR2 Build Log

Couple of things for the next manual update: - (pg47) : My keyed shaft is 50.24mm long, so it is a little hard to cut down to 53mm. I think that...

2 months ago
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RE: Mitch's AR2 Build Log

Absolutely no need to apologize fore anything; part of the "open source" bit means we get to contribute too! I'll collect my notes and the places wher...

2 months ago
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