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jonbruner

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CT scans of 1k lithium-ion batteries show quality risks in inexpensive cells

lumafield.com
287 points·by jonbruner·10 months ago·124 comments

How a car cigarette lighter works, in CT scans

lumafield.com
30 points·by jonbruner·2 years ago·29 comments

CT scan shows there's still lots of toner left in an “empty” cartridge

lumafield.com
358 points·by jonbruner·4 years ago·270 comments

AirPods Pro (2nd Gen) teardown: the lanyard eyelet is more than it appears

lumafield.com
14 points·by jonbruner·4 years ago·1 comments

comments

jonbruner
·10 months ago·discuss
Scan time depends on material composition in the object you're scanning and your requirements for resolution. You can scan a dense steel object overnight to capture micron-level detail, or you can scan a plastic object in a few seconds to search for a known issue like a crack.

Battery scans are very fast; the scans in the report took less than a second. Total cycle time on a Triton CT scanner is under 5 seconds when you account for part handling.
jonbruner
·3 years ago·discuss
Ha! I'm with Lumafield--we've actually done the same thing, scanning bags of Doritos, Cheetos, and Ruffles: https://www.lumafield.com/article/bite-into-doritos-ruffles-...

To answer the question about whether these are cleaned up, these scans aren't processed beyond what our software does automatically during the reconstruction. Industrial CT scanners are designed to scan a wider range of material densities than medical scanners. We use some copper filtration to scan parts with lots of dense materials, but no extra processing is required once we've reconstructed the model.
jonbruner
·4 years ago·discuss
Also, the difference between a full cartridge and an empty cartridge is minimal; about 20% of the toner reservoir is filled in a new cartridge, dropping to 15% when the printer says the cartridge is empty.