Easy Hands Free Heat Gun Setup: Pt II

[grendel]

Re: Easy Hands Free Heat Gun Setup: Pt II

Bottled gas is pretty cheap here - natural gas even cheaper but there are a lot of issues - and the teflon would always be a worry!

[Corretto]

Re: Easy Hands Free Heat Gun Setup: Pt II

Good points on Teflon Java and Grendel. I had thought about that, but it all depends on where the flames are aimed and how hot the flame is. If you are going to scorch the teflon you are certainly going to burn the beans to bits at the same time.

Cost isnt really the issue, that was just a side point.

Still it might be worth trying sometime.

Just thinking outside the box really. Thats how the BM got going in the first place :-)

Belinda

[towe0609]

Re: Easy Hands Free Heat Gun Setup: Pt II

I just want to thank Belinda.

Our Sunbeam Bakehouse popped into the telephone booth, emerged "Corretto", joined up with my X1 heat gun, produced a great roast first time, and was back in the pantry ready to bake bread before anyone noticed - no sign it had ever been anywhere near a coffee bean.

Undoubtedly the most even roast I have ever achieved. Here here to the suggestion about an innovation award. Cheers Belinda.

Tim

[Corretto]

Re: Easy Hands Free Heat Gun Setup: Pt II

Just glad I could help out there TimO ;-)

Belinda

[Corretto]

Re: Easy Hands Free Heat Gun Setup: Pt II

Ive now been experimenting with a lid on the BM and the lid off. The datalogged graphs speak for themselves.

With the lid on the roast is able to be brought up to a high temperature at a rate almost equal to a popper! If you want to of course :-) you have the power to slow it down naturally

when the roast is approaching the first crack stage the lid was removed, at around 170 to 180 C. its evident on the graphs how the roast then slowed down to maintain and extend the roast.


the BM with a clear saucepan lid on. So simple :-)




this first graph shows just how quickly the temperature can rise with the lid on.




the second graph shows a normal roast without the lid on just for comparison. Same day same weather conditions - which were very windy, gusting around the roasting area.




here is the crack analysis graph. you can see where the lid was put on again to bring the temperature up towards the second crack. It does take a bit of juggling.




another simple but effective way to further increase the control over a BM roast :-)



Belinda

[Presso]

Re: Easy Hands Free Heat Gun Setup: Pt II

Ok Im here, Ive taken the plunge, Ill add my vote to the poll
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[JavaB]

Re: Easy Hands Free Heat Gun Setup: Pt II

Belinda,

The lid is certainly giving you far more control....

And I like the extension of time between the first and second crack.... looks like you can pretty much adjust the roast profile to do whatever you want- probably more so than most commercial roasters.

Those roasts should be extra good in the cup.

[JavaB]

Re: Easy Hands Free Heat Gun Setup: Pt II

Ok Im here, Ive taken the plunge, Ill add my vote to the poll

Welcome on board Presso....

The technique is spreading at an increasing rate...... and so it should because its great!

All praise to Belinda for getting us all started

[Corretto]

Re: Easy Hands Free Heat Gun Setup: Pt II


Thanks Java ;D

Yup it certainly adds a huge amount of control. Ill try the Costa and the Panama Volcan tomorrow and see if bringing them up to temp quicker really makes a difference. I imagine itll add a bit more acidity - as in a popper roast. Although having been able to delay the first crack adds another dimension though :-)



Belinda

[Corretto]

Re: Easy Hands Free Heat Gun Setup: Pt II

Ok Im here, Ive taken the plunge, Ill add my vote to the poll

Glad to see youve come over to the dark side Presso :-)

Although I never found that particular HG extension (in your photo) to work very well. I much pefer the HG without any extensions.


Belinda

[Presso]

Re: Easy Hands Free Heat Gun Setup: Pt II

No youre right, I took it off after my test run.

I am currently contemplating modifying the lid to accomodate a vacuum and the heat gun. Rather than opening the lid at the first crack, just make some more noise! ;D

[Corretto]

Re: Easy Hands Free Heat Gun Setup: Pt II

No youre right, I took it off after my test run.

I am currently contemplating modifying the lid to accomodate a vacuum and the heat gun. Rather than opening the lid at the first crack, just make some more noise! ;D

You mean the original lid?

Or the extension to the HG?


Belinda

[Presso]

Re: Easy Hands Free Heat Gun Setup: Pt II

Yeah I thought I would decomission the view window and drill a hole saw size chunk outta the plastic and insert my noisy vacuum cleaner nozzle. 8-)

[Corretto]

Re: Easy Hands Free Heat Gun Setup: Pt II


Interesting idea there Presso. Do you leave the lid up when youre roasting though? Otherwise itd be impossible to hear the cracks ....... and see the roast too.

Pictures, we need pictures :-)


Belinda

[JavaB]

Re: Easy Hands Free Heat Gun Setup: Pt II

Yeah I thought I would decomission the view window and drill a hole saw size chunk outta the plastic and insert my noisy vacuum cleaner nozzle. 8-)

Mmmmm.... that plastic window - unlike Belindas pyrex glass lid- may not be real happy at the 200 deg plus temps... (As a breadmaker the window wouldnt get much above 100C - you even see steam condense on it during baking).

Also are you planning to suck (smoke and chaff +beans :) from the bowl... if so the plastics used in vacuum cleaner hoses, fans and cases also wont be too happy about the temp of the air being sucked in..... might not remain noisy for too long ---- Scotty we have reactor melt down

Most plastics- when heated above their "working temp"- give off toxic fumes as well. Vacuum cleaners have only been engineered for normal room temps

If you are planning to reverse the vacuum to cool the beans.... you wont have that problem.