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11/26/2020 6:37 AM
Everyone have a super Thanksgiving and may all your roasts turn out stellar woohoo

11/25/2020 4:20 PM
Howdy 1st CH and welcome to HR forum! Be sure to read in the forums to see if anything covers the topic and please post away in drum roaster forums Welcome

11/25/2020 3:35 PM
Hey everyone! I am new to the home roasters forum. Mainly here to read and learn! I’d also love to get advice about modifying my roaster (a Huky 500)

11/10/2020 5:29 PM
Welcome MJ, post away! Cheers

11/08/2020 6:05 PM
Hello All, New here, started with an air popper, now using fresh roast 800. I'm here to learn and connect with others Thank you

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Green and Roasted Coffee Bean Sorter
jbrux4
I saw this and though, "Pretty dang cool." I remember seeing something about a fruit sorter that can optically find "rejects" on a conveyor and then bat them out at a transfer point. I thought, "Wouldn't it be cool if that could be done for coffee beans." Turns out, somebody's done it.


R/
Jared
JackH
I wonder if it can spot potato defect in beans.
---Jack

KKTO Roaster.
Mbb
I'll bite...

Who is mixing green and roasted beans together?
mtbizzle

Quote

Mbb wrote:

I'll bite...

Who is mixing green and roasted beans together?


In the video, it doesn't look like they're sorting green/roasted. Defect/no defect. They have another feature that sorts roasted coffee -- eg overroasted beans, quakers, taking them out. I'm guessing you were misinterpreting 'green/roasted coffee sorter' -- not at the same time!

Quote

I wonder if it can spot potato defect in beans.


I'm not an expert, but my expectation would be:

a system like this has the potential to identify/remove any defect that is visible and exhibits some characteristic visual profile. Speculating, but I would think (a) if the defect isn't clearly visible on all surfaces, a lot would be missed, (b) would run into issues if the defects were hard to distinguish from normal characteristics. Maybe it would be hard to detect some of the potato defect beans -- many have very minor physical defects, or a bore on one side only, right?

Though I have heard that potato defect beans will show up under UV. That would presumably be a very easy method for a machine to use for sorting Rwandan coffee. Or sorting at home!
Roast: Nostalgia popper
Grind: Bunn G3, Comandante c40
Brew: aeropress, v60, la pavoni professional & flair espresso, Hoffmann french press, 'Scott Rao' water
Ask me about Tea!
baldheadracing

Quote

JackH wrote:

I wonder if it can spot potato defect in beans.

Last I heard ... no. While a potato defect may show up in UV, unfortunately quite a few usable beans show up as well so it isn't practical.

As an aside, Illy pioneered optical sorting. National Geographic did a 45-minute documentary on Illy roasting factory a few years ago. There's a short segment in the video showing their optical sorting system about 23 minutes in.

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