Bho purging heat source?

[keifsweat]

What would be the best heat source while still providing consistency for some one on a budget... ie griddle ,water, oven, toaster oven, heated tile, heat pad what is your favorite and what brand. What kinda temp controls etc.

 

[Gray Wolf]

What would be the best heat source while still providing consistency for some one on a budget... ie griddle ,water, oven, toaster oven, heated tile, heat pad what is your favorite and what brand. What kinda temp controls etc.

A heat mat with a controller is probably the cheapest way to have closely controlled heat in the 85F to 160F range that most of our work is done at. Check out Briskheat and Omega.

A griddle is cheeeep, but lacks control. You can tame it somewhat by using a sand bed, or a water bath between your pot and the griddle, but not as neat a package as a simple mat and controller.

Induction heating can work, if you add something magnetic inside the chamber to provide the inductive heat.

 

[frankenstein2]

I use a candle jar warmer and it works great. I use a tuperware dish with the locking sides and a gasket on the bottom of the lid. A $30-$40 brake bleeder pump from the auto supply store and your all set. For about $60 you can have a diy purge set-up that works great. Here's some pics of the results of my set-up.

 

[bull619]

A heat mat with a controller is probably the cheapest way to have closely controlled heat in the 85F to 160F range that most of our work is done at. Check out Briskheat and Omega.

A griddle is cheeeep, but lacks control. You can tame it somewhat by using a sand bed, or a water bath between your pot and the griddle, but not as neat a package as a simple mat and controller.

Induction heating can work, if you add something magnetic inside the chamber to provide the inductive heat.

I use induction heating with a griddle pan making contact to produce heat. Then I place my chamber in the griddle pan. If I set the Nuwave to 130 my oil is usually around 105-110 degrees. Is there an advantage to putting a magnetic plate inside the chamber versus what I'm doing?

 

[Easy7]

Had a glass casserole dish that fit perfectly on a crock pot. Used a hot water bath to purge different extracts. High and low temps

 

[Kcar]

I use this - http://www.target.com/p/oster-18-qt-self-basting-roaster/-/A-14678506#prodSlot=medium_1_15

Works Great!

 

[keifsweat]

im using a 2.5 cfm single stage and i use either a pressure cooker or a 9.5 inch pyrex pie dish with my vac lid directly on it. so ideally i need to be able to heat either of those

 

[keifsweat]

trying to evenly heat 1/2 +

 

[Pragma]

I'm recently purging in a nice makeshift way.. I bought a foodsaver vaccum sealer and with it come included canisters that can be vacuumed, which are perfect for purging imho.

What I do is put whatever needs to be purged in a container inside the canister.. Vac the canister, then put the whole canister over some gentle heat like a radiator from the central heating system.. After a while marks of popped bubbles are clear so I know its working..

Cheers

 

[Gray Wolf]

I use induction heating with a griddle pan making contact to produce heat. Then I place my chamber in the griddle pan. If I set the Nuwave to 130 my oil is usually around 105-110 degrees. Is there an advantage to putting a magnetic plate inside the chamber versus what I'm doing?

It would add less variables and heat up faster if you had the magnetic plate inside, instead of outside, but it sounds like what you are doing works.

Old engineering rule of thumb. If it looks stupid, but works, it isn't stupid.

 

[bull619]

It would add less variables and heat up faster if you had the magnetic plate inside, instead of outside, but it sounds like what you are doing works.

Old engineering rule of thumb. If it looks stupid, but works, it isn't stupid.

I really like the idea. Any ideas of what I could use for a metal plate? I have a standard 3 and 5 gallon chamber. Thanks a ton GW.

 

[keifsweat]

i looked on omega and briskheat... even emailed them to see if this chinese temp controller i found would be compatible. but i was wondering if i was missing something ...like a product they offer that is around 100$ with controller they seem to be exactly what i need but trying to stay under 100...may be one of those things that u get what u pay for.. if anyone knows a source for a silicone heat mat with temp controller for 100the or less or close please send link.

 

[SkyHighLer]

i looked on omega and briskheat... even emailed them to see if this chinese temp controller i found would be compatible. but i was wondering if i was missing something ...like a product they offer that is around 100$ with controller they seem to be exactly what i need but trying to stay under 100...may be one of those things that u get what u pay for.. if anyone knows a source for a silicone heat mat with temp controller for 100the or less or close please send link.

https://www.icmag.com/ic/showpost.php?p=5915060&postcount=4

https://www.icmag.com/ic/showthread.php?p=6063043#post6063043

https://www.icmag.com/ic/showpost.php?p=5935324&postcount=152


DIY PID controller parts,

http://www.amazon.com/gp/product/B002PIM3R8/ref=oh_details_o03_s00_i01?ie=UTF8&psc=1

http://www.amazon.com/gp/product/B005K2IXHU/ref=oh_details_o03_s00_i00?ie=UTF8&psc=1

http://www.amazon.com/gp/product/B008MU0VFY/ref=oh_details_o02_s00_i01?ie=UTF8&psc=1

Read through that, tell me what you think, and I'll provide additional feedback if necessary.

 

[keifsweat]

pretty much the direction i was leaning toward is some do it yourself. i was thinking of using this with the omega or brisk. would this work.. also u wanna sell that brisk mat?

http://www.ebay.com/itm/110V-LCD-Di...071?pt=LH_DefaultDomain_0&hash=item58a1713187

 

[keifsweat]

what temp did u find was a sweet spot for purging once the heat transfers thru the mat and vacuum chamber?and are u purging in a dish, silicone, parchment? within the chamber?

 

[SkyHighLer]

pretty much the direction i was leaning toward is some do it yourself. i was thinking of using this with the omega or brisk. would this work.. also u wanna sell that brisk mat?

http://www.ebay.com/itm/110V-LCD-Di...071?pt=LH_DefaultDomain_0&hash=item58a1713187

I don't think that's actually a PID controller, more of an on/off thermostat. Graywolf's been posting lately about a very inexpensive PID controller ($15) he's been testing out, the one I linked to is about the cheapest at Amazon with really good overall reviews. I'm using the Briskheat mat under my evaporating dish with just a dimmer, even though I have another PID controller I could use.

 

[SkyHighLer]

what temp did u find was a sweet spot for purging once the heat transfers thru the mat and vacuum chamber?and are u purging in a dish, silicone, parchment? within the chamber?

115F +2F actual oil temperature on parchment. I let the evaporating dish get up to near 115F at the end of the boil off, and then place the dish in the chamber for a couple of quick pulls before the temperature of the dish drops much. Heat doesn't transfer well to a dish sitting on the bottom of a stock pot...I then scrape the oil to parchment and vacuum purge using a thin film at 115F down to -29.5" Hg for about an hour, pulling the vacuum up and down several times.

If you limit your pulls to a true -29.5" Hg (you need to calibrate your dial gauge, just ask,) the bubbling will slow after twenty minutes, and cease at about an hour. If you pull down to -29.9" Hg, the terpenes will boil off on and on, and imo you're just asking for autobudder due to the stress on the oil.

A link to a couple of more DIY PID controller pictures, with a link to the dial vacuum gauge calibration instructions,

https://www.icmag.com/ic/showpost.php?p=6017474&postcount=27

 

[keifsweat]

this is the setup

this is the setup

so my runner is home made, inspired by my baster, and holds about 45-55 grams. found rubber corks online micron stainless screens. simple

my dish is a pie dish i believe from ikea.. the gasket is the gasket from inside my pressure cooker pot lid...makes great gasket all of u with pressure cookers that immediately discarded the lid go find it and pull that gasket out fits alot of things.

lid is 1/2 inch polycarbonate 12x12 with tiny hole drilled in the middle... this is where i apply a suction cup to create vacuum

pump is cheap standard harbor freight i believe. single stage 2.5 cfm

a few quick connects brass from home depot

and a pressure gauge straight from a mighty vac hand pump. i run into and purge directly on in this dish.

any comments suggestions or advice is much appreciated. as what started this thread is a solid heat source. i do believe the omega mat or brisk or the likes will be my answer. now to build or find a temp control. thanks to all who have been helpful so far...imma go look at those pid controllers and save some money to get it all. only was allowing 60 tops for budget... gonna double that + but i believe i wont have to buy again.

 

[SkyHighLer]

The Briskheat and Omega mats are solid investments. Btw, neither comes with a plug on the end of the cord, they are industrial tools, not commercial plug and play devices. Omega just won't keep their stock up, I've asked...you order, and in 4-5 weeks they ship, lousy way to do business imo, but their product is slick....

 

[keifsweat]

it is a thermostat on off... i believe it will control to a range also... what would be wrong with that? stick node under mat set temp when it goes below temp it tunrs back on. it looks exactly like the benchtop controller brisk sells.

http://www.briskheat.com/p-392-sdc-benchtop-temperature-controller.aspx