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   AI6YR Ben (ai6yr@m.ai6yr.org)'s status on Wednesday, 07-Jan-2026 09:10:36 JST AI6YR Ben

   It's alive! ALIVE! #diycoffeeroaster #coffee #projects #rubegoldbergmachine

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     AI6YR Ben (ai6yr@m.ai6yr.org)'s status on Wednesday, 07-Jan-2026 12:12:52 JST AI6YR Ben

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     Final roasted product! It went a little farther than I wanted, but the headlamp I was using ran out of batteries and I had no visual of the roast at the end. These are halfway between first and second crack, I believe. I was aiming for slightly lighter. This is REALLY consistent roasting compared with my usual. #coffee #roasting #diy #coffeeroaster

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     AI6YR Ben (ai6yr@m.ai6yr.org)'s status on Wednesday, 07-Jan-2026 12:12:53 JST AI6YR Ben

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     Roasting! This is right at "first crack" #coffee #diyroaster #diy #coffeeroaster

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     AI6YR Ben (ai6yr@m.ai6yr.org)'s status on Wednesday, 07-Jan-2026 12:12:53 JST AI6YR Ben

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     FLIR says 465F after first crack #flir

     Steve's Place repeated this.
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     AI6YR Ben (ai6yr@m.ai6yr.org)'s status on Wednesday, 07-Jan-2026 12:12:54 JST AI6YR Ben

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     239F with heat gun set to "high". Ambient temp is 56F. #coffee

     Steve's Place repeated this.
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     AI6YR Ben (ai6yr@m.ai6yr.org)'s status on Wednesday, 07-Jan-2026 12:12:55 JST AI6YR Ben

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     Video! #flir #coffee

     Minoru Saba repeated this.
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     AI6YR Ben (ai6yr@m.ai6yr.org)'s status on Wednesday, 07-Jan-2026 12:12:55 JST AI6YR Ben

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     First bean test... failure! The angled metal failed to resist the weight of beans. I pulled them from the shaft and pushed the collars and bent the disk. #diy #coffeeroaster

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     AI6YR Ben (ai6yr@m.ai6yr.org)'s status on Wednesday, 07-Jan-2026 12:12:55 JST AI6YR Ben

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     Once that was fixed, determined it was having issues if coffee was over the shaft in depth. Not a lot of capacity. Half of a Talenti container. #diy #coffeeroaster

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     AI6YR Ben (ai6yr@m.ai6yr.org)'s status on Wednesday, 07-Jan-2026 12:12:55 JST AI6YR Ben

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     I think this is the right video... #coffee

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     AI6YR Ben (ai6yr@m.ai6yr.org)'s status on Wednesday, 07-Jan-2026 12:12:56 JST AI6YR Ben

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     Pizza pan parts made. Built my own round stock from pizza pan parts. #diy #coffeeroaster

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     AI6YR Ben (ai6yr@m.ai6yr.org)'s status on Wednesday, 07-Jan-2026 12:12:56 JST AI6YR Ben

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     Turned it all on, FLIR in hand. #flir #coffee

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     AI6YR Ben (ai6yr@m.ai6yr.org)'s status on Wednesday, 07-Jan-2026 12:12:57 JST AI6YR Ben

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     Looks like TV antennas are typically extruded 6061 aluminum. Aluminum is used as a cookware (used to be more common) and we do drink out of aluminum cans.... But apparently they don't suggest aluminum anymore due to some toxicity issues. Looks like I will go snag a cheap steel pizza pan from the dollar store and cut a new wheel, just because.

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     AI6YR Ben (ai6yr@m.ai6yr.org)'s status on Wednesday, 07-Jan-2026 12:12:57 JST AI6YR Ben

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     Okay, opted for the food grade thin steel and will also roll my own spacers from the material, just to be safe. Bicycled down to the dollar store. The frame bag I sewed looks to be the right size for snacks, maybe a lunch. Right side zipper was fortuitous as it makes it easier to snack while riding..

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     AI6YR Ben (ai6yr@m.ai6yr.org)'s status on Wednesday, 07-Jan-2026 12:12:58 JST AI6YR Ben

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     Video of the DIY coffee roaster.

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     AI6YR Ben (ai6yr@m.ai6yr.org)'s status on Wednesday, 07-Jan-2026 12:12:58 JST AI6YR Ben

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     Next step: roasting coffee. A few unanswered questions at the moment, which I will ponder:

     1. Is the heat/RF shielding from an Xbox 360 food safe... Appears to be just plain old aluminum, no coatings. Probably fine.

     2. Same question on the bits of slight gold-tint TV antenna I used for the tilt wheel. Those TV antennas are a soft aluminum, as well, unclear to me what the gold/bronze tint on those is.

     (both obviously can be replaced now that this works, mechanically -- can definitely replace the disk with a random piece of $1 or $2 pizza pan from the dollar store instead of an Xbox 360... and can find some non-colored metal for the angled part inside).

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     AI6YR Ben (ai6yr@m.ai6yr.org)'s status on Thursday, 08-Jan-2026 17:41:28 JST AI6YR Ben

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     And, final product! Which tastes like coffee, lol. Significantly, my usual cast iron pan roast results in a mixed flavor profile because hand roasting ends up with a range of bean doneness. This is quite different as all the beans are the roast level. Interesting... #coffee

     Minoru Saba repeated this.
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     AI6YR Ben (ai6yr@m.ai6yr.org)'s status on Thursday, 08-Jan-2026 17:41:28 JST AI6YR Ben

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     Receipts on the filtering effect on coffee: (many studies!)

     Coffee consumption and mortality from cardiovascular diseases and total mortality: Does the brewing method matter?

     "...Unfiltered brew was associated with higher mortality than filtered brew, and filtered brew was associated with lower mortality than no coffee consumption...."

     https://academic.oup.com/eurjpc/article-abstract/27/18/1986/6125530?redirectedFrom=fulltext&login=false

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     AI6YR Ben (ai6yr@m.ai6yr.org)'s status on Thursday, 08-Jan-2026 17:41:29 JST AI6YR Ben

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     Yesterday's roast into the 1800's manual grinder. You can tell what kind of roast by how it grinds by hand, very similar to how you have a better feel of the road and your vehicle's performance with manual shifting of a transmission. Lighter roasts grind more and have more resistance (more caffeine!). The darker the toast, the easier they see to grind. This one is slightly past a medium, so will taste the roast more than the beans. I like it a little lighter, but my fault for roasting in the dark. Minimal chaff using the heat gun, that might actually just be remnants from the last grind. #coffee

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     AI6YR Ben (ai6yr@m.ai6yr.org)'s status on Thursday, 08-Jan-2026 17:41:29 JST AI6YR Ben

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     Into a coffee press (metal, because I have broken too many glass ones). Then filtered. Tastes better unfiltered, but the filtering removes coffee oils, which are not great for your cholesterol levels. #coffee

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     AI6YR Ben (ai6yr@m.ai6yr.org)'s status on Thursday, 08-Jan-2026 17:41:30 JST AI6YR Ben

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     **ps: the half Talenti container (which is about 235ml of volume, unsure on weight) expanded to a full pint, 473ml, now that it's cooled! So, not too terrible of a yield. I didn't realize coffee beans expanded when roasting, but that makes sense (since "first crack" is the same kind of mechanism as popcorn popping) #coffee