Not a member yet?
Click here to register.

Forgotten your password?
Request a new one here.

Shoutbox

You must login to post a message.

renatoa

04/14/2024 5:56 AM

TheOtherJim and papajim,

allenb

04/11/2024 6:33 PM

Zemona

renatoa

04/11/2024 9:19 AM

Mrbones and sgupta,

renatoa

04/10/2024 1:09 AM

, Ed K

allenb

04/09/2024 5:34 PM

TheJak99

Shoutbox Archive

Forum Threads

Newest Threads

War on Farmers by Su...
Kaleido Roaster PID ...
Green coffee sellers
Wet beans - Estimati...
Skywalker roaster mods

Hottest Threads

Skywalker roaster...	[292]
Skywalker, the AL...	[214]
Skywalker Roasts	[94]
My first popcorn ...	[47]
War on Farmers by...	[39]

In Memory Of Ginny

Donations

Latest Donations
dmccallum - 10.00
JackH - 25.00
snwcmpr - 10.00
Anonymous - 2.00
Anonymous - 5.00

Users Online

Guests Online: 2

Members Online: 0

Total Members: 8,205
Newest Member: TheOtherJim

Oh no! Where's the JavaScript?
Your Web browser does not have JavaScript enabled or does not support JavaScript. Please enable JavaScript on your Web browser to properly view this Web site,
or upgrade to a Web browser that does support JavaScript; Firefox, Safari, Opera, Chrome or a version of Internet Explorer newer then version 6.

View Thread

Homeroasters - Home Roasting Coffee Community » BUILDING A ROASTER » Electric and Gas Heat Sources

Who is here? 1 guest(s)

Controlling Heat Gun?
dbick	#1 Posted on 12/13/2017 7:21 PM
Newbie Posts: 20 Joined: November 10, 2017	Is it possible or even advisable to use a router speed control on a heat gun to slowly ramp up the temperatures? Something like this: https://www.harbo...43060.html Will using this cause a malfunction in the heat gun or shorten its lifespan? Thanks


Koffee Kosmo	#2 Posted on 12/13/2017 7:55 PM
Administrator Posts: 1620 Joined: December 31, 2008	Just get a German made Steinel heat gun They have a user adjust heat controller inbuilt I have a Steinel heat gun that I use in my work If it breaks down one can purchase parts to repair if required KK I home roast and I like it. Designer of the KKTO Roaster Build information https://homeroast...ad_id=1142 https://docs.goog...lide=id.i0 Blog - http://koffeekosm...gspot.com/ Bezzera Strega, Mazzer Robur Grinder, Pullman Tamper Convex, (KKTO) Turbo Oven Home Roaster.
	Web

dbick	#3 Posted on 12/13/2017 9:59 PM
Newbie Posts: 20 Joined: November 10, 2017	Well, the problem with that is I already have these 2 Harbor Freight heat guns in use on this system: https://imgur.com... The problem I am having is 1 heat gun isn't enough heat when the blower is on high enough to loft the beans so I use both guns. The problem with that is that when I turn on both guns, even with the blower blowing so hard it is almost blowing beans out of the top, the heat rises too quickly and I am scorching the beans during the drying phase. My idea is to always run one of the guns on "full power" and then, if possible, hook the other gun up to the device I linked above, and slowly ramp that heat gun up to full power giving me a smooth curve and a longer drying phase without scorching. I have tried to just run 1 heat gun for a time and then switching on the other gun but that causes a dramatic temp increase and that is when scorching is occurring.


renatoa	#4 Posted on 12/14/2017 1:38 AM
Administrator Posts: 3005 Joined: September 30, 2016	Place (high current) diodes in series with each heater, each diode in parallel with a bypass switch. This setup will divide the power by two, so you will have three steps of power. This is valid if the blower motors are separate powered from the heaters. Using dimmers on both blower and heater would give you more choices though. Roasters: DIY: TO based IR 200-640g Moded commercial: Skywalker, 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/presso: ALM pour over, Arin lever, Staresso Mirage, Hario Cafeor dripper, Flair, Kompresso, Rota Aeropress, Gaggia Mini


dbick	#5 Posted on 12/14/2017 5:02 PM
Newbie Posts: 20 Joined: November 10, 2017	I do use that exact same router speed control (dimmer?) to control that fan speed. I am wondering if I purchase another one of those can I also use it to control one of the heat guns?


greencardigan	#6 Posted on 12/14/2017 11:20 PM
1 1/2 Pounder Posts: 1185 Joined: November 21, 2010	Using a dimmer/router controller will result in the heat gun fan also slowing down which could potentially result in the element burning out. It's better to separate the heat gun element from the fan and give the fan a separate DC power supply. Then use a dimmer/router controller to control the heat gun element.


oldgearhead	#7 Posted on 12/15/2017 3:31 PM
1 1/2 Pounder Posts: 1128 Joined: February 10, 2011	I've found that a Varic gives much finer control and uses less current than a router controller, but it cost a lot more and will possibly outlast it. No oil on my beans...


dbick	#8 Posted on 12/15/2017 8:55 PM
Newbie Posts: 20 Joined: November 10, 2017	I have removed the built-in fan from those heat guns since I already force air through the heat guns via the blower. I will google variac and see what it comes up with. Thank you


renatoa	#9 Posted on 12/16/2017 2:38 AM
Administrator Posts: 3005 Joined: September 30, 2016	Variac is bulky and cost a lot, you can use such variator as well https://www.ebay....2184416502 or better control, but found in Europe only: https://www.ebay....2544173796


dbick	#10 Posted on 12/16/2017 9:25 AM
Newbie Posts: 20 Joined: November 10, 2017	Thank you, that looks perfect

Jump to Forum:

Similar Threads

Thread	Forum	Replies	Last Post
Heat gun flour sifter roaster	Heat Gun Roasting	1	01/06/2024 8:42 AM
Another heat gun bread machine roaster	Heat Gun Roasting	2	01/03/2024 4:10 AM
Larry Cotton's 'wobble disc' heat gun build	Heat Gun Roasting	63	11/19/2023 9:25 AM
Renatoa can you walk us through a roast based on Heat power control vs PID?	Roasting Coffee	32	08/21/2023 12:41 AM
2 series heat gun elements	Fluidbed Roaster	24	05/21/2023 2:06 AM