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CrazyBusiness
Stranger thanyou think
Registered: 02/17/05
Posts: 136
Loc: Under the stairs.
Last seen: 16 years, 11 months
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Oven Tek revisited
#3861209 - 03/03/05 02:54 AM (19 years, 30 days ago) |
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I had a pondering today..
I was looking through old threads here and in several other communities learning about sterile environments. I decided and learned how to make my first pos pressure glovebox, and poked around at other methods. One that stood out to me was one "oven tek" where the materials used were placed at the opening of a hot oven, and "upward currents kept the contams out of the jars". I along, with anyone of any sense thought it was a silly idea, as the contams would just back eddy into the jars and swirl around, filling everything with all but nice growth. I then proceeded to read a bunch of arguments between sensible people like myself and trial and error types who were reporting success with this "tek".
After some thought and much smoking of marijuana I came to a theory. I think the idea of an upward current of warm air has nothing at all to do with the reason why this "bogus" tek has a very high reported success rate. After some study of convection ovens I got to thinking about the amount of air and the rate at which air circulates through an oven, relative to the room. I found that approximately 90% of the air in an average kitchen can be reasonably thought to have passed through a running oven in 4 hours. Virtually all air in the oven approaches very high, unlivable (even for contams) temperatures before its time in the oven is complete, passing by hot elements and being charged with heat to rise out of the oven vent. Given this, an oven can be said to kill virtually all of the bugs in 90% of an average sized kitchen. This is an average kill rate in the entire room. Throw on the added protection of working near the "clean air" outlet of your oven, and you've got yourself a tek
This brings up the question of how this tek would be performed if adapted for the "other" theory about why it works. I would suggest, as opening of the oven will bring down temperature and thus kill rate, the best way to approach this method would be to run the oven for several hours at a high temperature, and then work in the natural outflow of the oven vent, rather than disturbing the airflow of the room by opening the oven. One could perhaps even attach hose to the outflow on their oven and direct the clean air for a custom area effect. The possibilities with this are plentiful, with the discovery of the actual value behind this tek.
What do you think? I could just be high as shit, but I think theres something to this, and it should be properly tested and documented.
-------------------- ...in my opinion Life's too short, man.. Life's too short. Dont hate me, and I wont put space between us. Dont lie to me, and I wont dislike you. Keep an open mind, and I'll love you. My advice of the week(do this, you'll like it): listen to Mahogany Rush. Representing Beatiful British Columbian classic dank. Just think, Columbia for coke, British Columbia for buds. truth
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ohmatic
searcher
Registered: 02/28/04
Posts: 6,742
Loc: europe
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i told you about 20 times in #cultivation to forget about it, but well, guess your hard to turn down.
i sitll wish you good luck, just always keep this in mind:
uhm yeah and in relation to my ionizer anno said something alike some time back, it was like "it depends on the environment one has, then maybe even bogus teks as the oven tek may work, if the environment is super clean" peace ohm
-------------------- MONOTUB tek HEATBOMB tek RIP #cultivation! ....can't associate? well FUCK U !
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CrazyBusiness
Stranger thanyou think
Registered: 02/17/05
Posts: 136
Loc: Under the stairs.
Last seen: 16 years, 11 months
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Re: Oven Tek revisited [Re: ohmatic]
#3861239 - 03/03/05 03:37 AM (19 years, 30 days ago) |
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Quote:
ohmatic said: i told you about 20 times in #cultivation to forget about it, but well, guess your hard to turn down.
i sitll wish you good luck, just always keep this in mind:
uhm yeah and in relation to my ionizer anno said something alike some time back, it was like "it depends on the environment one has, then maybe even bogus teks as the oven tek may work, if the environment is super clean" peace ohm
thats the third time you showed me that, and this is the third time I will ask you to try to understand what I'm saying, perhaps reread my words, and realize that I'm talking about an area affecting air sterilizer, rather than some current based hokey hail mary attempt at sterility.
-------------------- ...in my opinion Life's too short, man.. Life's too short. Dont hate me, and I wont put space between us. Dont lie to me, and I wont dislike you. Keep an open mind, and I'll love you. My advice of the week(do this, you'll like it): listen to Mahogany Rush. Representing Beatiful British Columbian classic dank. Just think, Columbia for coke, British Columbia for buds. truth
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ohmatic
searcher
Registered: 02/28/04
Posts: 6,742
Loc: europe
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Quote:
CrazyBusiness said: realize that I'm talking about an area affecting air sterilizer
get a hepa powered flowhood then and quit messing with bogus non working teks. peace ohm
-------------------- MONOTUB tek HEATBOMB tek RIP #cultivation! ....can't associate? well FUCK U !
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Hangnail
Teo Torriatte
Registered: 03/03/04
Posts: 129
Loc: Over at the Frankenstein ...
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forgetting the picture. there is also the fact that non filtered air is drawn over your project on it's way into the oven.
the oven vent is a better idea, but that air is VERY hot. glad too see you have the old noodle working. good luck
-------------------- tonight you'll fall asleep in clothes-so late like a candy bar wrapped up for lunch that's all you get to taste poverty and spit poverty and spit
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PooPs
What's thisfor???
Registered: 03/05/03
Posts: 4,510
Loc: Stirrin up the pile!
Last seen: 14 years, 11 months
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Re: Oven Tek revisited [Re: Hangnail]
#3861687 - 03/03/05 09:31 AM (19 years, 30 days ago) |
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That " Rush of air " you get from the oven, i beleive is from the moisture in the air being heated by the oven, the heat makes the air/moisture expand and creates a flow. < stoner observation mostly.
But, stick with what works, most people who do the oven " tek " and have success could probably just as easily work on their kitchen counters with problems.
I know i would'nt put nothin sterile in MY oven !! LOL...
-------------------- ----------- Sniff, Sniff... What's that smell???... ohhhhh.!! ------------------ Pot Free for another : nevermind.. never made it..
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Prisoner#1
Even Dumber ThanAdvertized!
Registered: 01/22/03
Posts: 193,665
Loc: Pvt. Pubfag NutSuck
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Quote:
CrazyBusiness said: I had a pondering today.. After some thought and much smoking of marijuana I came to a theory. After some study of convection ovens I got to thinking about the amount of air and the rate at which air circulates through an oven, relative to the room. I found that approximately 90% of the air in an average kitchen can be reasonably thought to have passed through a running oven in 4 hours.
the marijuana has clouded your thinking, convection ovens circulate the air within the oven, it doesnt pull room air in and expel it back after heating it although ovens are not air tight, there is no real circulation in and out of the oven, simply a little heated/expanded air that leaves it and a small amount that enters
view the picture that Anno did for the oven tek, look at the direction that the smoke is traveling, most goes up over the lip of the jar but you'll also notice that there is a small amount thats dropping into the jar, the heat creats a high pressure area thats trying to stableize its self, it pushes smoke and contams into the lower pressure area (the jar) which has cooler more condensed air.
Quote:
Virtually all air in the oven approaches very high, unlivable (even for contams) temperatures before its time in the oven is complete, passing by hot elements and being charged with heat to rise out of the oven vent. Given this, an oven can be said to kill virtually all of the bugs in 90% of an average sized kitchen. This is an average kill rate in the entire room. Throw on the added protection of working near the "clean air" outlet of your oven, and you've got yourself a tek
where is this vent located, I've taken apart and cleaned many ovens, none of which have venting that goes from the interior compartment with the heating elements to the outside room area, there are thermal expansion vents to keep the insulated areas from exploding from pressure buildup but these are seperate from the oven its self it's a part of the ovens insulation system thats designed to prevent superheating your house
Quote:
This brings up the question of how this tek would be performed if adapted for the "other" theory about why it works. I would suggest, as opening of the oven will bring down temperature and thus kill rate, the best way to approach this method would be to run the oven for several hours at a high temperature, and then work in the natural outflow of the oven vent, rather than disturbing the airflow of the room by opening the oven.
you realize that running your oven for several hours is going ot increase the ambient room temps by at least 20 degrees and also waste a great deal of electricity, it's also not foing ot be as effective as a still air glove box or better yet, a flow hood, the only effective 'oven tek I could possibly see is the 'climb in the oven, close the door and work at 450F for an hour. after that, you should be done and no contamination issues, well maybe not done per say but at least medium rare.
Quote:
What do you think? I could just be high as shit, but I think theres something to this, and it should be properly tested and documented.
I think your right, your just high, try taking your oven apart sometime and see how its designed, I'll post some pics tonight of mine and how it's put together, there's no air exchanger
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Prisoner#1
Even Dumber ThanAdvertized!
Registered: 01/22/03
Posts: 193,665
Loc: Pvt. Pubfag NutSuck
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Re: Oven Tek revisited [Re: Prisoner#1]
#3864430 - 03/03/05 07:02 PM (19 years, 30 days ago) |
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the 'vent'
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CrazyBusiness
Stranger thanyou think
Registered: 02/17/05
Posts: 136
Loc: Under the stairs.
Last seen: 16 years, 11 months
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Re: Oven Tek revisited [Re: Prisoner#1]
#3865341 - 03/03/05 09:56 PM (19 years, 30 days ago) |
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All convection ovens intake and exhaust air. I just came back from my kitchen, where my perfectly normal oven is doing it just now. Perhaps if you reread your oven's manual, looking at the list of parts you would see something usually referred to as a "steam vent" or "exhaust vent". The exchange of air within the oven is required, to prevent steam buildup which would ruin your food.
-------------------- ...in my opinion Life's too short, man.. Life's too short. Dont hate me, and I wont put space between us. Dont lie to me, and I wont dislike you. Keep an open mind, and I'll love you. My advice of the week(do this, you'll like it): listen to Mahogany Rush. Representing Beatiful British Columbian classic dank. Just think, Columbia for coke, British Columbia for buds. truth
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agar
old hand
Registered: 11/21/04
Posts: 9,056
Loc: Somewhere Else
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Glove Box ....hands down beats "oven tek", unless you could get inside the oven & close the door, along with the materials you plan to work with. Bit crowded....LOL.
--------------------
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scatmanrav
Brainy Smurf
Registered: 05/08/04
Posts: 11,483
Loc:
Last seen: 11 years, 2 months
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Re: Oven Tek revisited [Re: agar]
#3866093 - 03/04/05 01:27 AM (19 years, 29 days ago) |
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All the electricity it will cost running the oven for 4 hours at a time will easily cost more then a glove box, even including a flowhood. That is assuming the reasoning is even correct, which I dont.
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Sko
Democrat
Registered: 04/21/03
Posts: 203
Loc: Pacific Northwest
Last seen: 19 years, 18 days
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Re: Oven Tek revisited [Re: scatmanrav]
#3866721 - 03/04/05 06:22 AM (19 years, 29 days ago) |
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Quote:
scatmanrav said: All the electricity it will cost running the oven for 4 hours at a time will easily cost more then a glove box, even including a flowhood. That is assuming the reasoning is even correct, which I dont.
Show me a glove box that cheap?
-------------------- Sko
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scatmanrav
Brainy Smurf
Registered: 05/08/04
Posts: 11,483
Loc:
Last seen: 11 years, 2 months
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Re: Oven Tek revisited [Re: Sko]
#3867466 - 03/04/05 11:31 AM (19 years, 29 days ago) |
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Agar has plans to build a rediculously huge flowhood for like 150 bucks.
Cheap glovebox though..4 dollar rubbermaid bin, 4 dollar gloves, two holes in the side and you have a glovebox that will do you better/just as good as the oven tek. There are others, better built for 10-50 bucks..Anno or Pris1 had a whole shit load of nice ones meant for opening mail during the whole terrorisim thing, but since anthrax is no longer an issue, they went cheap..look around they're all over.
Running your oven for 4 hours if you need a clean room to work once or twice a week will get expensive fast. Not sure how much your electric bill is, but mines high. Not to mention I have to watch consumption so that my HPS lights go unnoticed.
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agar
old hand
Registered: 11/21/04
Posts: 9,056
Loc: Somewhere Else
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Re: Oven Tek revisited [Re: scatmanrav]
#3867635 - 03/04/05 12:15 PM (19 years, 29 days ago) |
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Quote:
scatmanrav said: Agar has plans to build a rediculously huge flowhood for like 150 bucks.
More like $250..... &....... It is not all that " rediculously" big. Big sucker is nice to work in. Built it big enough I could but AA 941 inside it before opening it.
It is a nice thing to PC large grain/spawn filter/patch bags - UNSEALED. Allow to cool in PC, open under flowhood & G2G.... then impulse seal bags. Almost ZERO contam rate.
--------------------
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RogerRabbit
Bans for Pleasure
Registered: 03/26/03
Posts: 42,214
Loc: Seattle
Last seen: 1 year, 1 month
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Re: Oven Tek revisited [Re: agar]
#3869254 - 03/04/05 05:43 PM (19 years, 29 days ago) |
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It amazes me how much trouble we see people going through to avoid cutting 2 arm sized holes in a small clear rubbermaid container. Just put some latex gloves on and stick ur arms through the holes. That will give a tremendous success rate. If you seal it up totally, so much the better, but a simple rubbermaid with two holes cut will give excellent results. I carry one and a bag of latex gloves in my jeep at all times when in the mountains. I'm always cloning wild fruits and that simple thing is what I use.
-------------------- Download Let's Grow Mushrooms semper in excretia sumus solim profundum variat "I've never had a failed experiment. I've only discovered 10,000 methods which do not work." Thomas Edison
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Fluxburn
.
Registered: 10/22/04
Posts: 2,216
Loc: Oakland, CA, USA
Last seen: 13 years, 4 months
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I must say, the glove box is so cheap.... the only thing better is the flow hood, which is a lot harder to make and costs tons more... but the flow hood is all the easier and more pleasureful to work out of.
-------------------- ABSTRACT ART (Mine) http://nathanbelomy.com
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RogerRabbit
Bans for Pleasure
Registered: 03/26/03
Posts: 42,214
Loc: Seattle
Last seen: 1 year, 1 month
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Re: Oven Tek revisited [Re: Fluxburn]
#3870126 - 03/04/05 08:46 PM (19 years, 29 days ago) |
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That thing is huge agar! I'm jealous.
-------------------- Download Let's Grow Mushrooms semper in excretia sumus solim profundum variat "I've never had a failed experiment. I've only discovered 10,000 methods which do not work." Thomas Edison
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scatmanrav
Brainy Smurf
Registered: 05/08/04
Posts: 11,483
Loc:
Last seen: 11 years, 2 months
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Re: Oven Tek revisited [Re: agar]
#3872566 - 03/05/05 10:54 AM (19 years, 28 days ago) |
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Quote:
agar said:
Quote:
scatmanrav said: Agar has plans to build a rediculously huge flowhood for like 150 bucks.
More like $250..... &....... It is not all that " rediculously" big. Big sucker is nice to work in. Built it big enough I could but AA 941 inside it before opening it.
It is a nice thing to PC large grain/spawn filter/patch bags - UNSEALED. Allow to cool in PC, open under flowhood & G2G.... then impulse seal bags. Almost ZERO contam rate.
I think sir, you are confused on the definition of rediculously huge, because both your PC and that flowhood are rediculous man
Ok, 250...but still for a huge flowhood. Like said though, simple glovebox is cheap, easy and will do you better then waiting 4 hours heating up your house wasting electricity to do some work...
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