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Homeroasters - Home Roasting Coffee Community » ALL ABOUT ROASTERS » Heat Gun Roasting

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Flour sifter upgrades.
Josh025	#1 Posted on 02/11/2018 7:19 PM
Newbie Posts: 29 Joined: October 23, 2017	https://imgur.com... I had a thought a few weeks ago to add insulation to the roasting chamber of my sifter and a stainless steel funnel under attached to the heat gun to help mitigate cold drafts from mixing with the air supplied by the heat gun. The results are encouraging. I saw a more stable RoR in both my ET probe and BT. And a more even final roast that finished promptly with first crack at ten minutes. I dropped my roasting temp on the heatgun to 650 for the slow start and 750 to finish. That's down from 750 and 950-1000 respectively. So I call it a win. Just wanted to post so everyone else could benefit as well! Edited by JackH on 05/07/2020 6:00 PM


renatoa	#2 Posted on 02/11/2018 11:58 PM
Administrator Posts: 2728 Joined: September 30, 2016	An idea for your next restless tinkering session :) what about using a reversed turbo oven lid, with stripped down glass, instead hot gun ? ;) Roasters: DIY: TO based IR 640g Moded commercial: Dieckmann RoestMeister, Nesco, popper(s). Electrics: TC4ESP, MS6514, USB/Artisan/Apps, PID controllers Grinders: Arco, Xeoleo ghost burrs, Krinder, vintage PeDe Dienes, MBK Feldgrind Brew: Flair, Kompresso, Rota Aeropress, Hario Cafeor dripper, Gaggia Mini


Josh025	#3 Posted on 02/12/2018 12:22 PM
Newbie Posts: 29 Joined: October 23, 2017	haha well i'm quite happy with how this works so far. I've been modding my g2 roaster the week before. I took the burrs and taped them together and used them to sand the burr holders flat. The alignment is just about perfect now for the burrs.


renatoa	#4 Posted on 02/12/2018 2:53 PM
Administrator Posts: 2728 Joined: September 30, 2016	What happens with chaff in such machine ?


JackH	#5 Posted on 02/12/2018 4:49 PM
Administrator Posts: 1809 Joined: May 10, 2011	Nice setup Josh. It is looking like the Apollo command module! ---Jack KKTO Roaster.


allenb	#6 Posted on 02/12/2018 5:16 PM
Administrator Posts: 3776 Joined: February 23, 2010	Yes, nice setup indeed. Very even roast color throughout what I can see. Let us know how the roast performs in the cup. Allen 1/2 lb and 1 lb drum, Siemens Sirocco fluidbed, presspot, chemex, cajun biggin brewer from the backwoods of Louisiana


Josh025	#7 Posted on 02/12/2018 10:27 PM
Newbie Posts: 29 Joined: October 23, 2017	Quote renatoa wrote: What happens with chaff in such machine ? The unit is fairly sealed and the chaff is taken up the flex pipe to waiting folgers tin. i usually spin the beans much faster than during roasting after the roast has finished and the heat gun is in the cooling phase. it allows the beans to stay in the warm chamber just a little longer but the higher speed of the sifter arms spins most of the chaff off the beans and up the pipe.


Josh025	#8 Posted on 02/12/2018 10:29 PM
Newbie Posts: 29 Joined: October 23, 2017	Quote allenb wrote: Yes, nice setup indeed. Very even roast color throughout what I can see. Let us know how the roast performs in the cup. Allen It's a Guatamala huehuetanango from Happy Mug. It's a great every day cup. the acidity is lower than other guatamala's i've tried and it's incredibly smooth in the cup. It has some chocolate notes as well as citrus. Finishes clean. I can't really complain about it for the price.


Josh025	#9 Posted on 03/21/2018 7:31 PM
Newbie Posts: 29 Joined: October 23, 2017	https://imgur.com... https://imgur.com... UPDATE: Added a small stainless steel bowl to the top of my funnel. Drilled some 3/16 holes in it to act as a heat diffuser, and bonus! The bowl seals off the bottom of my roaster. No more ambient air entering the chamber unless it's by design. That's a natural yirgacheffe test batch from earlier. Just need to iron out my rate of rise. Too many flicks and crashes.


mtbizzle	#10 Posted on 05/07/2020 5:01 PM
1/4 Pounder Posts: 101 Joined: April 22, 2020	Quote Josh025 wrote: https://imgur.com... https://imgur.com... UPDATE: Added a small stainless steel bowl to the top of my funnel. Drilled some 3/16 holes in it to act as a heat diffuser, and bonus! The bowl seals off the bottom of my roaster. No more ambient air entering the chamber unless it's by design. That's a natural yirgacheffe test batch from earlier. Just need to iron out my rate of rise. Too many flicks and crashes. Hey Josh! I like your setup. How has it been working? Thanks for adding the pictures and details, I think I may use several of your approaches in my attempt at a popper sifter roaster. The 'window' you made is cracking me up. The window looks surprisingly simple design, but I'm curious how you got it to fit so neatly. Where are your thermocouples run / placed in this? Roast: Kaldi wide, SR800 + projects Grind: Lab sweet, Bentwood, giota w/ MP burrs, Commandante Pull: Decent, La Pavoni, Elektra Microcasa a Leva, Faemina anno 60, Kim Express

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