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Chris Annin
Chris Annin
@chris-annin
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Joined: Jul 8, 2025
Last seen: Sep 14, 2025
Topics: 6 / Replies: 529
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RE: Bit size for counter-sinking?

I use a standard 82° countersink similar to this one:  Bit-size-for-counter-sinking.avif

2 months ago
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RE: Pneumatic Gripper

Builders of the AR2 or AR3 robot are free to use any gripper of their choosing. Initially I did not include the SMC gripper I was using in the BOM but...

2 months ago
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RE: Aluminium tarnishing

Hello, On the robots I have built I have just polished the pieces using aluminum polish and have had good luck with them not tarnishing but I dont liv...

2 months ago
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RE: Hole size for J1 turret

The chart im looking at now shows clearance hole for an M6 screw to be 6.2mm for a close fit and 6.4 for a normal fit. Its possible solidworks sized t...

2 months ago
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RE: J2 arm rubbing on spindle

Do you mean the J2 arm is rubbing on the housing? Do you have any pics you can send me so I can see what is going on?

2 months ago
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RE: Can AR3 be hung upside down?

That shouldnt be a problem. Ive had several people invert the AR2 and AR3 without any issues.

2 months ago
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RE: J1 press fit and dimensions

Hello, The J1 housing should be a very slight press fit, Ive asked my vendor to try and keep the tolerance closer to a light press as many people do n...

2 months ago
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RE: AR4?

Hello, currently the AR3 is the main platform for the foreseeable future. I'm currently researching a number of things including software improvements...

2 months ago
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RE: AR3 7th axis

I will be working on that but I don't have a timeline yet on a closed loop 7th axis.

2 months ago
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RE: Adding absolute position feedback using TLE5012 encoder

I think the only motor that might have clearance issue would be the J6 motor. Looking forward to seeing your progress.

2 months ago
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RE: Encoder AMT102-V Out of Stock

Ive had good luck with Arrow they show 250 in stock right now, hopefully the stock they list is accurate.

2 months ago
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RE: Best files for cnc dimensions?

Yes all the drill diameters are correct in the CAD files and if you need any 2D dimensions just let me know.

2 months ago
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2 months ago
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RE: Primary 18awg wire - how much is required?

you do not need 100' that is just a common quantity spool, you should only need about 24" of each

2 months ago
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