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Homeroasters - Home Roasting Coffee Community » ALL ABOUT ROASTERS » Popcorn Popper roasting

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3" Pyrex tubes
cruisaire	#1 Posted on 03/04/2012 2:36 PM
Newbie Posts: 20 Joined: February 08, 2012	For use as a chimney. Has anyone here sourced these? I know a cut soup can will work, but it won't let me see as much inside the roast. I tried a cheap lantern chimney and after several roasts, it cracked at the base. Untempered glass is "uncool" when it fails! :@ "Even little kids in Mexico drink coffee".


greencardigan	#2 Posted on 03/04/2012 4:04 PM
1 1/2 Pounder Posts: 1162 Joined: November 21, 2010	Quote cruisaire wrote: For use as a chimney. Has anyone here sourced these? I know a cut soup can will work, but it won't let me see as much inside the roast. I tried a cheap lantern chimney and after several roasts, it cracked at the base. Untempered glass is "uncool" when it fails! :@ The replacement globes for gas lanterns should work well. You can find these in a variety if sizes. I'm getting another 2 today for a roast chamber I'm building. Just make sure you they have room to expand as they get hot. The glass will expand at a different rate to metals.


BenGeldreich	#3 Posted on 03/04/2012 11:00 PM
1/4 Pounder Posts: 76 Joined: January 20, 2011	i bought a LWG1C globe from http://www.oillam...age27.html I also sourced a longer glass chimney at Michaels http://www.michae... which is a craft store here in Canada. If you have a local craft store check in the candle making department. Edited by BenGeldreich on 03/04/2012 11:01 PM -------- Ben Turbo Oven Roaster w/ Variac, TC4Cw/ Bourbon \| Bezzera Strega \| Baratza Vario Grinder \| Yama 5 Cup Syphon \| Aeropress
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lmclaren	#4 Posted on 03/05/2012 2:29 AM
1/4 Pounder Posts: 159 Joined: March 20, 2011	I second greencardigan, You can pick them up at camping stores, normally made from low expansion glass so that expansion is not so much a problem. From Wikipedia: "Borosilicate glass is a type of glass with the main glass-forming constituents silica and boron oxide. Borosilicate glasses are known for having very low coefficients of thermal expansion (~3 ? 10−6 /?C at 20?C), making them resistant to thermal shock, more so than any other common glass. Such glass is less subject to thermal stress and is commonly used for the construction of reagent bottles. Borosilicate glass is sold under such trade names as Pyrex and Simax."


cruisaire	#5 Posted on 03/05/2012 6:21 AM
Newbie Posts: 20 Joined: February 08, 2012	Duly noted, I'll head to the outdoor store. Thanks again to all!! "Even little kids in Mexico drink coffee".


Bob J	#6 Posted on 03/05/2012 7:03 AM
Newbie Posts: 38 Joined: March 02, 2012	Is there any particular model of replacement lantern globes that you could recommend? I will be working on converting a poppery (when it comes in) and would like to use the pyrex tube instead of the can if possible....


Bob J	#7 Posted on 03/05/2012 7:09 AM
Newbie Posts: 38 Joined: March 02, 2012	Quote BenGeldreich wrote: i bought a LWG1C globe from http://www.oillam...age27.html I also sourced a longer glass chimney at Michaels http://www.michae... which is a craft store here in Canada. If you have a local craft store check in the candle making department. Posted before I saw this..... Michaels is here in the US as well so will check them out..... Thanks and much appreciated!


oldgearhead	#8 Posted on 03/05/2012 8:40 AM
1 1/2 Pounder Posts: 1128 Joined: February 10, 2011	The 'Pyrex" baking tube 2.75" x 14" can usually be found on eBait. oldgearhead attached the following image: No oil on my beans...


Bob J	#9 Posted on 03/06/2012 7:52 AM
Newbie Posts: 38 Joined: March 02, 2012	Quote oldgearhead wrote: The 'Pyrex" baking tube 2.75" x 14" can usually be found on eBait. Awesome! Thanks! BTW, nice looking rig! :BowDown:


oldgearhead	#10 Posted on 03/06/2012 10:01 AM
1 1/2 Pounder Posts: 1128 Joined: February 10, 2011	The 2.75" x 14" tubes are called: "Pyrex Bake-A-Round' No oil on my beans...


seedlings	#11 Posted on 03/06/2012 10:17 AM
1 1/2 Pounder Posts: 4226 Joined: June 27, 2007	Quote cruisaire wrote: For use as a chimney. Has anyone here sourced these? I know a cut soup can will work, but it won't let me see as much inside the roast. I tried a cheap lantern chimney and after several roasts, it cracked at the base. Untempered glass is "uncool" when it fails! :@ Those cheap lantern chimneys usually have trouble if they fit tight. Leave room for the glass to expand. CHAD Edited by seedlings on 03/06/2012 10:19 AM Roaster: CoffeeAir II 2# DIY air roaster Grinder: Vintage Grindmaster 500 Brewers: Vintage Cory DCU DCL, Aeropress, Press, Osaka Titanium pourover


cruisaire	#12 Posted on 03/07/2012 10:46 AM
Newbie Posts: 20 Joined: February 08, 2012	I went ahead and fell for the "top shelf" tubes. Fab a bracket next. "Even little kids in Mexico drink coffee".


Bob J	#13 Posted on 03/19/2012 6:42 AM
Newbie Posts: 38 Joined: March 02, 2012	Was able to score a pyrex tube (Bake a round Duo).... Does anyone have any good ideas on how best to mount a thermocouple in one of these so I can get a good BT? Should I try and drill a hole in the tube?


oldgearhead	#14 Posted on 03/19/2012 7:10 AM
1 1/2 Pounder Posts: 1128 Joined: February 10, 2011	I located a very long TC and went in from the top. However, after I corolated thr BMT temps to my UTB (under-the-bean) probe, I no longer use the BMT probe very often. oldgearhead attached the following image: Edited by oldgearhead on 03/19/2012 7:15 AM No oil on my beans...


seedlings	#15 Posted on 03/19/2012 9:29 AM
1 1/2 Pounder Posts: 4226 Joined: June 27, 2007	Quote Bob J wrote: Was able to score a pyrex tube (Bake a round Duo).... Does anyone have any good ideas on how best to mount a thermocouple in one of these so I can get a good BT? Should I try and drill a hole in the tube? Probably shouldn't drill a hole. Unless, perhaps, you have a local glass company drill it for you. CHAD Roaster: CoffeeAir II 2# DIY air roaster Grinder: Vintage Grindmaster 500 Brewers: Vintage Cory DCU DCL, Aeropress, Press, Osaka Titanium pourover


Bob J	#16 Posted on 03/19/2012 11:12 AM
Newbie Posts: 38 Joined: March 02, 2012	Quote seedlings wrote: Quote Bob J wrote: Was able to score a pyrex tube (Bake a round Duo).... Does anyone have any good ideas on how best to mount a thermocouple in one of these so I can get a good BT? Should I try and drill a hole in the tube? Probably shouldn't drill a hole. Unless, perhaps, you have a local glass company drill it for you. CHAD Thanks Chad! Was hoping that there was another way I could mount the TC to get a good read on the BT.... Looks like I can drop it down through the chaff collector I am thinking of building and that might do the trick.... Really didn't want to take a chance on damaging the tube.... These are way too hard to find....:\|

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