when can we expect pics of the v2.0

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da fuck?

Thanks for that.

The dryer functions similarly to hang drying on a warm day in a drafty room. It's not so fast that chlorophyll has no chance to break down, or else my buds would be bright green instead of a rather khaki colour when they come out of the dryer. It literally is 3 days from growing plants to rolling joints, no further stuffing around with curing or jars etc. needed.

I'm booked up for a few days with harvesting. The dryer is presently being loaded up, so it's busy at the moment. I need to partially disassemble it to get the pics that I want, so it'll be a few days.

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How not to grow dope - 'Not Your Father's Marijuana' / 'new super cannabis' / 'extra potent hydro' myths busted
DIY batwing reflector - DIY power panel to keep electrics safe and neat - DIY low-temp 3-day bud dryer - Get a harvest every 2 weeks - Photoessay: A batch of clones in rockwool - Project Big Blue Bastard: DIY 5-tube, 100 watt UV ioniser

...and don't even THINK about asking me how to hide your grow from your MOM. This is an adult sport. Give it up until you grow up.

Let me see. The dryer. With the buds. With the buds. Now...

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[SIGPIC]Planting the seeds of destruction. One by one.

that would make a nice picture!!!

bud dryer porn!

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da fuck?

ooookay


BDv2.0. Note UV ozone generator's outlet in the dryer's exhaust air stream.


Heating element detail. That's not 2 fans in series- the fan body next to the heat sink has had its (blown) motor cut out. The fan body is used to space the fan blades away from the heat sink fins- makes a hell of a whzzzzzzzzzzzzzing sound if the blades pass within a couple mm of the heatsink fins. Nylon stocking material used as intake air filter.


heatsink is warmed by 6x 25W power resistors in parallel, temp controlled with a 500W incandescent light dimmer.


overhead view of heating element


side view showing thermostat and 2nd thermometer (for verifying the temp reading on the thermostat). Knob below tstat is the dimmer for setting voltage applied to resistors.


bud porn, still loading...


intake fan. Note temp sensors, white one is for the backup thermometer, the tiny blue one on the bottom is the thermistor from the thermosat unit, which has been removed from the tstat and remote mounted in the warm airstream.

__________________
How not to grow dope - 'Not Your Father's Marijuana' / 'new super cannabis' / 'extra potent hydro' myths busted
DIY batwing reflector - DIY power panel to keep electrics safe and neat - DIY low-temp 3-day bud dryer - Get a harvest every 2 weeks - Photoessay: A batch of clones in rockwool - Project Big Blue Bastard: DIY 5-tube, 100 watt UV ioniser

...and don't even THINK about asking me how to hide your grow from your MOM. This is an adult sport. Give it up until you grow up.

Load the rest. Into my bowl. So that I. May smoke it.


Tee Hee.

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[SIGPIC]Planting the seeds of destruction. One by one.

preciate it very much al!

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da fuck?

Hey I've been reading all of these great posts on bud dryers...however i have a question about the heat...is it really necessary? I mean theoretically if you have no humidity(not a lot) could you keep it in a cooler environment and still have good clean dry bud? and exactly what is too much humidity? i plan on drying in a box setup that will maintain about 65F with around 30% humidity very similar to your setup, though im using 2 small 400cfm intake fans and one 8000cfm exhaust, im hoping for the best without the heat element....I cant imagine it would be any slower if the temps were down, i would have thought the added heat would cause evaporations of the water in the bud and raise humidity....so cooler air would possibly dry it faster....

just my 2cents, but if you have any input i'd appreciate reading it, since it's obvious you know what you're doing and i just like experimenting. good job on the design though it looks super hightech, and efficient.

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I only wish for peace, if this peace is Unattainable, I Stand for REVOLUTION!

No, not totally necessary. However, the dryer will work MUCH faster with a temp controlled warm air source than without.

The amount of water that air is carrying out of the percentage it COULD carry at any given temperature is called relative humidity (but you knew that from your research, didn't you? ).

If air is at 100%RH at a given temp, it can pick up no more water (which is why we say it is at 100%, maximum capacity). If you want 100%RH air to be able to pick up water from your buds, you need to drop the RH. The easiest way to reduce the RH is to raise the temp. Graph courtesy of Wikipedia:



Air at even 80%RH is much more able to pick up water out of your buds than air at 100%. It only takes a rise of a couple degrees C in humid, room temp air (100%RH @ 24-25C) to drop the RH dramatically. The lower the RH and the higher the temperature of the air running through the dryer, the faster it will work. Of course, we must limit temp to 29C to prevent breakdown of THC into non-psychoactive cannabinoids.

If your dryer's intake air was always @ 30%RH, a heaterless dryer would work rather quickly, every day of the year. If your dryer is in a place where there is climate control (heating & cooling), it could get by without a heater, no worries. However, drying times increase as temperature drops. It might take a week at 0C/30%, but it'd still work.

I'm not so lucky. Not even the living spaces in my house have any permanent heating systems- just don't need it at the subtropical latitude where I am. However, the place where my op is located usually has higher RH than outside air. A heater for my dryer was necessary in my case, where RH is commonly >80-90%.

Check those figures. Something's wrong. My main exhaust blower for my grow op (250W, 250mm dia centrifugal) shifts 600CFM. 8000CFM would be a wind tunnel!

No, cooler air will not dry faster than warmer air. If it would, clothes dryers would not have heating elements- they'd more closely resemble air conditioners. The reason RH does not build up within the dryer is because the fans are busy shifting moist air out of the thing. Obviously, the dryer would need access to a large free airmass to work properly. You could not shut it in an unventilated closet and expect it to work well.

In a hypothetical case, if you had your choice between drawing air in at 24C @ 50% as opposed to say 16C, also @ 50%, the air at 24C would dry buds mucho faster. Air at 24C can hold much, much more water than at 16C (see graph). Energy applied to water molecules causes them to vibrate faster and separate from other water molecules more easily.

The more energy you apply, the faster the rate of evaporation. This energy can be in the form of heat in the air or motion of air. Fast moving air at 100%RH will still knock some water molecules off of anything damp, but much more slowly than air that has been only very slightly warmed. It really takes very little heat energy to drop the RH of a given sample of air at common room temps.

A few people have built heaterless copies of my dryer. They work, albeit much slower than those with controlled temp heater units. Commonly, folks report that a heaterless bud dryer will take about 6-8 days (dependent upon ambient RH) to finish drying freshly trimmed buds.

__________________
How not to grow dope - 'Not Your Father's Marijuana' / 'new super cannabis' / 'extra potent hydro' myths busted
DIY batwing reflector - DIY power panel to keep electrics safe and neat - DIY low-temp 3-day bud dryer - Get a harvest every 2 weeks - Photoessay: A batch of clones in rockwool - Project Big Blue Bastard: DIY 5-tube, 100 watt UV ioniser

...and don't even THINK about asking me how to hide your grow from your MOM. This is an adult sport. Give it up until you grow up.

hey al, would it be possible to use a heat sync pulled from an old computer - just to warm the air up - and place it in front of the air-intake fan? Or do you think airflow would be a problem? thx!