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Date: 09 Dec 2006 08:13:24
From: Michael Horowitz
Subject: Heat gun vs hair dryer?
Am I correct that a hair dryer gets WAY hotter than a hair dryer and a
hair dryer doesn't get hot enough to roast beans? - MIke





 
Date: 11 Dec 2006 07:13:05
From:
Subject: Re: Heat gun vs hair dryer?

Michael Horowitz wrote:
> On Sat, 09 Dec 2006 08:13:24 -0500, Michael Horowitz
> <mhorowit@cox.net> wrote:
>
> I'm visualizing an air pipe entering a 10" vertical cylinder at the
> base and tangent to the cylinder so that air forced thru the pipe
> would cause a swirling of beans. Now shove a toned-down heat gun in
> that air pipe.
>
> Anyone tried this? I think it's worth a trip to HF. - Mike

WONT WORK, just to save you the disappointment. Heat guns, especially
the cheap ones, do not support more air pressure than what is required
to get the hot air out the nozzle. Even ones with the Masters design
will only motivate an ounce or two of beans. I routinely do 9oz of
beans with my Masters heat gun and could do a whole pound if that
didn't overflow my strainer towards the end of the roast. A heat gun
is only good for supplying the bean mass with heat, you will need to
find some other way to agitate them.

Matthew



 
Date: 10 Dec 2006 10:08:51
From: Heat + Beans
Subject: Re: Heat gun vs hair dryer?
Most mid-range and beyond HGs have some temp control. Mine has 5
settings and never budges from highest unless I decide to do 3 or 4 oz
in the 32 oz bowl----this, simply to get a slower roast. But for
roasts larger than that, all the control you need you can get from
moving the HG up or down.

I'd also recommend that anyone interested in using the HG as the
heat-generating component of a yet-to-be-invented more sophisticated
roasting machine, first try the simplest version of HG/DB. Maybe try
10-30 roasts. Only then, look for how additional tweaks might fix
deficits that you actually experience.

tin

Randy G. wrote:
> vehicle. But the variable heat might be good for roasting coffee. I
> just might try it myself someday, but with 3 Hottops as well as an
> iRoast2, a HWP, and a Gourmet, I don't see the point other than seeing
> what chaff-covered clothes look like. ;-)
>
> Randy
> "I'll try roasting it in the warp drive,
> but I don't think the beans can take it, Captain"
> G.
> http://www.EspressoMyEspresso.com



 
Date: 10 Dec 2006 06:51:53
From: Flasherly
Subject: Re: Heat gun vs hair dryer?

Michael Horowitz wrote:
> On Sat, 09 Dec 2006 08:13:24 -0500, Michael Horowitz
> <mhorowit@cox.net> wrote:
>
> I'm visualizing an air pipe entering a 10" vertical cylinder at the
> base and tangent to the cylinder so that air forced thru the pipe
> would cause a swirling of beans. Now shove a toned-down heat gun in
> that air pipe.
>
> Anyone tried this? I think it's worth a trip to HF. - Mike

Thinking that might come up. Basically then you've an I-Roast for $90
less. There's no tangent, though. Stuff the business end of the dryer
into the pipe like a potato. Then you'll need mesh to keep the beans
from falling back down through and mesh atop to keep the beans from
blowing up and outside. The cylinder is ideally 1000F+ pyrex, but
that's not going to happen as easily, so the cylinder's back to metal -
aluminum, most likely. Too bad, pyrex solves a lot of the problems.
Top mesh then need be effectively transparent, or without and a tube
long enough for gravity to retain the beans. A light and very bright
to peer down the hole to watch for outer skin characteristics after 1st
crack. Singed eyebrows, a chaffed almost sunburned complextion, hair
that stands straight back, along with and a musky, rugged sort of
smell. Or step back and time it, turning the thing off periodically to
pour out some and check status. May as well load up heavily as well.
Find the limits the dryer fan is capable for moving the beans evenly.
Also have a breadmaker and air convection oven for things to do... .



 
Date: 10 Dec 2006 08:39:37
From: Michael Horowitz
Subject: Re: Heat gun vs hair dryer?
On Sat, 09 Dec 2006 08:13:24 -0500, Michael Horowitz
<mhorowit@cox.net > wrote:

I'm visualizing an air pipe entering a 10" vertical cylinder at the
base and tangent to the cylinder so that air forced thru the pipe
would cause a swirling of beans. Now shove a toned-down heat gun in
that air pipe.

Anyone tried this? I think it's worth a trip to HF. - Mike




  
Date: 11 Dec 2006 10:33:42
From: Jack Denver
Subject: Re: Heat gun vs hair dryer?
Sivetz, one of the pioneers of fluid bed roasting, many years ago designed a
fluid bed sample roaster based on a heat gun, where the hot air from the gun
is used to agitate the beans as well as roast them. Unfortunately, his
design only roasts 2 oz. of coffee. Heat guns just do not have enough oomph
to agitate a larger mass of beans. Your best best is to add a source of
mechanical agitation - introduce some kind of stirring paddle or screw auger
into the vertical pipe. People have built successful roasters by mounting
heat guns to blow into the pan of a bread machine and running the machine on
"dough" mode to activate the stirring paddle.

It's still worth a trip to HF. I was there yesterday for something else and
they still have the heat guns on sale for $10. You just have to accept that
you'll need some way of moving the beans around. Start with your arm with a
spoon or stick on the end of it. If you want to get fancy you can rig up
something motorized later.


"Michael Horowitz" <mhorowit@cox.net > wrote in message
news:463on2lpo180gg4puqte8cbim66garqniu@4ax.com...
> On Sat, 09 Dec 2006 08:13:24 -0500, Michael Horowitz
> <mhorowit@cox.net> wrote:
>
> I'm visualizing an air pipe entering a 10" vertical cylinder at the
> base and tangent to the cylinder so that air forced thru the pipe
> would cause a swirling of beans. Now shove a toned-down heat gun in
> that air pipe.
>
> Anyone tried this? I think it's worth a trip to HF. - Mike
>
>




  
Date: 10 Dec 2006 11:01:08
From: Randy G.
Subject: Re: Heat gun vs hair dryer?
Michael Horowitz <mhorowit@cox.net > wrote:

>On Sat, 09 Dec 2006 08:13:24 -0500, Michael Horowitz
><mhorowit@cox.net> wrote:
>
>I'm visualizing an air pipe entering a 10" vertical cylinder at the
>base and tangent to the cylinder so that air forced thru the pipe
>would cause a swirling of beans. Now shove a toned-down heat gun in
>that air pipe.
>
>Anyone tried this? I think it's worth a trip to HF. - Mike
>

I would try it with a cheap heat gun. Any resistance to the air flow
will overheat the gun and possibly shorten its life or create a
hazard. They are designed to run unrestricted.

Randy "Call 911? I WAS 911!" G.
http://www.EspressoMyEspresso.com




 
Date: 09 Dec 2006 10:25:18
From: Randy G.
Subject: Re: Heat gun vs hair dryer?
Michael Horowitz <mhorowit@cox.net > wrote:

>Am I correct that a [heat gun] gets WAY hotter than a hair dryer and a
>hair dryer doesn't get hot enough to roast beans? - MIke

No comparison at all. A heat gun will hit something like 1100 degrees.
Home Depot has the Milwaukee HT3300 digital controlled heat gun. it
hits 1200degrees which will melt solder, so yes, that is hotter than a
hair dryer:
>http://www.homedepot.com/prel80/HDUS/EN_US/diy_main/pg_diy.jsp?prod_id=100396206&cm_mmc=1hd.com2froogle-_-product_feed-_-D24X-_-100396206
It has a wide range of temperature settings and two fan speeds. I got
one to take the old vinyl strips off my motorhome and it proved itself
to be an excellent tool. There was a rebate on it which made it an
excellent deal.


Randy "NO! HOT!" G.
http://www.EspressoMyEspresso.com




  
Date: 09 Dec 2006 14:15:46
From: Jack Denver
Subject: Re: Heat gun vs hair dryer?
WAS a rebate as in past tense? That doesn't help the rest of us.

I got a $10 cheapie at Harbor Freight. Only 2 temps but the the high setting
is more than hot enough to roast coffee. We'll see how long it lasts but for
$10 you can find out if this heat gun roasting thing really is for you or
not. I don't mind it but I can see that not everyone would have the desire
or the ability to sit outdoors for 20 mins with chaff blowing over their
clothes, etc.



"Randy G." <frcn@DESPAMMOcncnet.com > wrote in message
news:ibvln2dab6mlsreogrpsta4cs45gg2h7vb@4ax.com...
> Michael Horowitz <mhorowit@cox.net> wrote:
>
>>Am I correct that a [heat gun] gets WAY hotter than a hair dryer and a
>>hair dryer doesn't get hot enough to roast beans? - MIke
>
> No comparison at all. A heat gun will hit something like 1100 degrees.
> Home Depot has the Milwaukee HT3300 digital controlled heat gun. it
> hits 1200degrees which will melt solder, so yes, that is hotter than a
> hair dryer:
>>http://www.homedepot.com/prel80/HDUS/EN_US/diy_main/pg_diy.jsp?prod_id=100396206&cm_mmc=1hd.com2froogle-_-product_feed-_-D24X-_-100396206
> It has a wide range of temperature settings and two fan speeds. I got
> one to take the old vinyl strips off my motorhome and it proved itself
> to be an excellent tool. There was a rebate on it which made it an
> excellent deal.
>
>
> Randy "NO! HOT!" G.
> http://www.EspressoMyEspresso.com
>
>




   
Date: 09 Dec 2006 11:57:04
From: Randy G.
Subject: Re: Heat gun vs hair dryer?
"Jack Denver" <nunuvyer@netscape.net > wrote:

>WAS a rebate as in past tense? That doesn't help the rest of us.
>
I was trying to say (unsuccessfully I might add) that I got a rebate
and was not sure if it was still valid or available..

>I got a $10 cheapie at Harbor Freight. Only 2 temps but the the high setting
>is more than hot enough to roast coffee. We'll see how long it lasts but for
>$10 you can find out if this heat gun roasting thing really is for you or
>not.

I got the one I mentioned because of the 2 year warranty and the worry
about how much heat I could apply without damaging the surface of the
vehicle. But the variable heat might be good for roasting coffee. I
just might try it myself someday, but with 3 Hottops as well as an
iRoast2, a HWP, and a Gourmet, I don't see the point other than seeing
what chaff-covered clothes look like. ;-)

Randy
"I'll try roasting it in the warp drive,
but I don't think the beans can take it, Captain"
G.
http://www.EspressoMyEspresso.com





 
Date: 09 Dec 2006 09:20:29
From: Michael Horowitz
Subject: Re: Heat gun vs hair dryer?
On Sat, 09 Dec 2006 08:13:24 -0500, Michael Horowitz
<mhorowit@cox.net > wrote:

>Am I correct that a hair dryer gets WAY hotter than a hair dryer and a
>hair dryer doesn't get hot enough to roast beans? - MIke

That should be "heat gun gets WAY hotter than a hair dryer" - brain
cramp.



  
Date: 09 Dec 2006 14:07:43
From: Jack Denver
Subject: Re: Heat gun vs hair dryer?
A heat gun blows air that is heated up to 1000F. Way hotter than a
hairdryer. Though they draw similar wattage, the heat gun dilutes the heat
with a lot less air than a hair dryer - it's basically a hair dryer with a
purposely weaker fan (and made to take the extra heat without melting
itself).

On the surface 1000F is too hot to roast coffee. And it is - if you hold the
gun still in one spot right over the beans, you'll char the beans within a
few seconds. But if you keep the distance sufficient and keep the beans and
the gun in constant motion it works. Eventually enough heat is added to the
bean mass that the roast finishes. With a hairdryer you could blow forever
and it would never get hot enough for the roast to finish.










"Michael Horowitz" <mhorowit@cox.net > wrote in message
news:3ghln2l0d1mvn7qi59oh9rifhf8cdh6opi@4ax.com...
> On Sat, 09 Dec 2006 08:13:24 -0500, Michael Horowitz
> <mhorowit@cox.net> wrote:
>
>>Am I correct that a hair dryer gets WAY hotter than a hair dryer and a
>>hair dryer doesn't get hot enough to roast beans? - MIke
>
> That should be "heat gun gets WAY hotter than a hair dryer" - brain
> cramp.
>




   
Date: 09 Dec 2006 19:31:02
From: AZ Nomad
Subject: Re: Heat gun vs hair dryer?
On Sat, 9 Dec 2006 14:07:43 -0500, Jack Denver <nunuvyer@netscape.net > wrote:


>A heat gun blows air that is heated up to 1000F. Way hotter than a
>hairdryer. Though they draw similar wattage, the heat gun dilutes the heat
>with a lot less air than a hair dryer - it's basically a hair dryer with a
>purposely weaker fan (and made to take the extra heat without melting
>itself).

>On the surface 1000F is too hot to roast coffee. And it is - if you hold the
>gun still in one spot right over the beans, you'll char the beans within a
>few seconds. But if you keep the distance sufficient and keep the beans and
that must be how starbucks got their start


  
Date: 09 Dec 2006 18:55:19
From: Ian Smith
Subject: Re: Heat gun vs hair dryer?
On Sat, 09 Dec 2006, Michael Horowitz <mhorowit@cox.net > wrote:
> On Sat, 09 Dec 2006 08:13:24 -0500, Michael Horowitz
> <mhorowit@cox.net> wrote:
>
> >Am I correct that a hair dryer gets WAY hotter than a hair dryer and a
> >hair dryer doesn't get hot enough to roast beans? - MIke
>
> That should be "heat gun gets WAY hotter than a hair dryer" - brain
> cramp.

Yes, you're right. Heat gun will set things on fire, but that's hard
work with a hair dryer.

However, I will now observe that my grandmother used to use an
industrial heat gun intended for heat sealing plastic wrapping as a
hair dryer. By judicious flicking of teh heat switch she managed not
to set her head on fire.

regards, Ian SMith
--


   
Date: 09 Dec 2006 14:04:23
From: Alice Faber
Subject: Re: Heat gun vs hair dryer?
In article <slrnenm1kn.blj.ian@acheron.smithnet >,
Ian Smith <ian@astounding.org.uk > wrote:

>
> However, I will now observe that my grandmother used to use an
> industrial heat gun intended for heat sealing plastic wrapping as a
> hair dryer. By judicious flicking of teh heat switch she managed not
> to set her head on fire.

That is probably the single most frightening thing I've read in over 15
years of Usenet participation.

--
AF
"Non Sequitur U has a really, really lousy debate team."
--artyw raises the bar on rec.sport.baseball


  
Date: 09 Dec 2006 08:04:23
From: Roger Shoaf
Subject: Re: Heat gun vs hair dryer?

"Michael Horowitz" <mhorowit@cox.net > wrote in message
news:3ghln2l0d1mvn7qi59oh9rifhf8cdh6opi@4ax.com...
> On Sat, 09 Dec 2006 08:13:24 -0500, Michael Horowitz
> <mhorowit@cox.net> wrote:
>
> >Am I correct that a hair dryer gets WAY hotter than a hair dryer and a
> >hair dryer doesn't get hot enough to roast beans? - MIke
>
> That should be "heat gun gets WAY hotter than a hair dryer" - brain
> cramp.
>

Yes you are correct. A heat gun will blow air hot enough to light wood on
fire if you hold it in place too long.

--

Roger Shoaf

About the time I had mastered getting the toothpaste back in the tube, then
they come up with this striped stuff.




 
Date: 09 Dec 2006 07:24:26
From: ThingFish
Subject: Re: Heat gun vs hair dryer?
The rubber mammy passed out and Michael Horowitz took advantage with:

> Am I correct that a hair dryer gets WAY hotter than a hair dryer and a
> hair dryer doesn't get hot enough to roast beans? - MIke

Error 13: Illegal brain function.
--
jh
There are three side effects of acid: enhanced long-term memory, decreased
short-term memory, and I forget the third.
Timothy Leary