What to do with dry ice

I have a little bit of dry ice and I can't think of what to do with it.I have alreadythrown it into the poolmade bubbles with itpointed my laser into itfroze a quarter in ita bunch of other things that I cannot rememberAny Ideas? I have an hour left with itNO DRY ICE BOMBSthey are illegal you know

Posted by n8man 10 years ago

Keeping canoeing gear dry

I'm about to go on an overnight canoeing trip with my scout troop, and we were wondering about the best way to keep our gear dry. I know that there are those dry bags that you can buy at places like REI, but I was trying to come up with a cheaper option. We'd be storing tents, food, personal gear, and backing stoves, and a few other things. If you have any ideas and methods you have previously tried, please tell me!

Posted by Hazard™ 5 years ago

"dry box" for drying clothes in humid weather

Hi all,I'm thinking of building something helping me to dry my laundry in the amazingly wet weather that I'm getting in the place I live now.I searched instructables for a while, but did not find anything that really applies. This might be due to the fact that I'm both new to instructables, and not a native English speaker. I might be using the wrong keywords.So I live in a very humid and foggy place, and it's winter now. When I hang my clothes out to dry, the process takes ages. Sometimes I think it might be working backwards: the clothes become wetter. Also, an unpleasant byproduct is that my clothes become smelly, despite they are clean. Sometimes, as a last resort, I hang my clothes inside the house. But my house is very small, and I do not really have a place for the clothes hanger. Plus, the house gets very humid and I am afraid I'm going to get mold. On the other hand, I have a rather large balcony, with a lot of place for the clothes hanger.Of course I could buy a clothes dryer. I actually use a coin-operated one for large items, such as bed sheets and large towels. But I'd rather not use a tumble dryer for my clothes.However I recently learned about heat recovery ventilation for houses, and I started wondering whether the same concept could be used to build a small-ish enclosure (a box) where air is kept warmer and dyer than outside, possibily in a controlled manner. Also, it would be very nice to get energy from the sun. Surely the walls of this box could be transparent, or black, to create some kind of greenhouse effect. Then I need a fan, to have the air circulating. The air could go through a heat recovery unit. This could probably solar-powered. On the other hand, I am not sure that solar panels would be helpful for heating the inside of the box by night (energy should be of course stored, but I do not think that would be enough).I see that something similar to what I'm thinking about is already on sale e.g. on amazon. These are called "portable clothes dryers", but they do not seem really optimized. They look like a combination of a hair dryer, a clothes rack and a tent. I do not think there is a real heat exchanger, or humidity control...Plus, they do not seem really safe, especially if operated outdoors.Can someone give me some advice, e.g. pointing me to projects that use similar ideas possibly for different purposes?Thanks a lotFrancesco

Posted by pieffebi 4 weeks ago

Stuff to make with my dehydrator

I'm so excited about my new dehydrator, have made great nuts, persimmons, apples and tomatoes. I have one of the thingies to make fruit leather and can make jerky. I'd love to hear any instructablycreative ideas of what to make. If you're in the San Francisco area I might be willing to lend it out too!

Posted by susie 9 years ago

Dry Freezing.

 Can you dry freeze something when its a liquid?    could you take a liquid solution and submerse it in dry ice to dry freeze it?

Posted by ERCBIENG 8 years ago

Dry ice in microwave?

What happens when you put dry ice in a micro wave? Im just wondering cause a local grocery store is now selling dry ice for Halloween effects (yes i know they cant sell to minors).Are the result any thing like this? (i dont think that microwave was turned on)

Posted by i make shooting things 11 years ago

Dry Ice Air Freshener

Michael Natkin writes a culinary blog Herbivoracious which includes hundreds of recipes for a vegetarian diet. This, however, is an experiment using dry ice to create beautiful clouds of smoke while filling your home with sweet scents.

Posted by Carleyy 8 years ago

Volume of gas from given weight of dry ice?

I'm rusty on basic chem. specifically, molarity, molecular weight... Dry ice, frozen CO2 is sold by the pound. I'd like to know by working formulas, how much volume a pound of dry ice will fill once it returns to gas. Carbon has molecular weight ~ 12.  Oxygen ~16.  But I don't recall what those numbers represent. One mole of gas occupies 22.4 liters, but how much does a mole of CO2 weigh?

Posted by Toga_Dan 4 years ago

How can I install a new top spray arm for an old dishwasher?

How can I install a new top spray arm for an old dishwasher? It doesnt have a top rinsing thing. Would I just create a hole, adjust water pressure, and connect tube to where i would install a spray arm frame? Also, any way to overwrite the regulations to let my dishwasher dry without needing a rinsing agent? I know on some clothes washing machines, you can "cheat them" to use more water.  Thank you!

Posted by JuliaM115 1 year ago

Fire Extinguisher Case as a Water Bottle?

I went to test an old 2lb fire extinguisher we had by pressing the green test button and, it didn't work. The fire extinguisher was a BC type dry chemical fire extinguisher. The label reads (CONTENTS OF BC DRY CHEMICAL POWDER: SODIUM BICARBONATE, MICA, CALCIUM STEARATE, NUISANCE DUST, IRRITANT; HMIS 0-0-0.) I took the chemical out to use as crude sodium bicarbonate, and now I want to use the bottle. My plan is to keep the labels on, find a cap like they use on most aluminum water bottles, and clean the inside out really well. The question I have is, is it safe? It says the contents are non-toxic, but I would still want to clean it really well. What would I clean it with? Would I have to coat the inside of the bottle because of the metal, (powder coating type place) and if so, what type of coating? Thanks! 

Posted by tinstructable 7 years ago

Dry Ice

I need some dry ice. Does anyone know where to get it?

Posted by starwing123 10 years ago

Drying towels on clothesline

I have just started using a clothesline and I have a problem with the way the towels dry.  They are very rough, kind of like sandpaper, and I was just wondering if anyone had any advice on how to make them dry softer.

Posted by Cruzfamily05 8 years ago

Duct Tape Dry-Erase

Just a little helpful note, that you can use dry-erase markers on Duct Tape. While I have not experimented with all brands it has worked for me in the past.

Posted by l33tjedibum 12 years ago

How long does it take spray paint to dry out?

Heya! I have a bunch of spray paint sitting at home from former crafts I used to do. I haven't used it in a year, and it is unlikely that I'll be moving back to the states anytime soon to use it. The first question is: how long does it take for spray paint to dry out? The second question is: do you know of anywhere I could donate it (if it is still good)? Preferably in the Bay Area?

Posted by floorwaxdesserttopping 9 years ago

adding seasoning & dry rub/sauce & Marinade sections to food page

I like the food page layout, but I would like to see extra sections for seasonings & dry rubs, as well one for sauces, marinades, & dips.    If you like this idea, add a comment, maybe we can get our awesome instructables crew to make this sight even cooler than it already is. Thanks for your time!

Posted by crapsoup 6 years ago

Levi Strauss & Co. Asks: What's the Future of Line Drying?

Levi Strauss & Co, the jeans manufacturer, is holding a contest to build a better line drying solution.  Sounds like something right up the Instructablizers' alley. Press Release Official Site

Posted by yoyology 8 years ago

Dry Compass Needle Making

Hello.  I've been working on a project that I foolishly thought would be fairly simple.  It's a decorative compass, kind of.  The body was simple enough to make, but now I'm stuck on the needle.  I had researched the making of a permanent magnet and thought  the process was definitely do-able, but found out that with such a small piece of metal it's actually very difficult.  Then I did a little more research into compasses and learned that dry compasses do not work the same as wet compasses, mine is a dry compass.                 My question to all of you physicists and engineers is:  is it possible for someone to make a dry compass needle at home and, if so, how?                  I realize I could find a cheapish compass and pirate the needle, and will if I have to, but what fun is that? 

Posted by Attmos 4 years ago


Some time back, it occurred to me that a sufficiently strong vacuum would be useful for drying wet electronics. After all, water boils at lower temps at higher elevations, and in space, water will even boil at 33F ( 1 C) Freeze-drying coffee is another example of using high vacuum to desicate stuff. I hooked up a vacuum pump which had been marketed for bleeding hydraulic brakes and clutches to a pressure chamber for extending the life of tennis balls.  It did not seem to work when I tried rapid drying a damp paper towel. Indeed, my control, another paper towel left out at room temps dried before the one in the vacuum chamber. I think I've heard of repurposing a refrigeration pump to act as a vac-pump. Someday, I may try that, but would prefer not to have to deal with the freon. Besides that, if someone is scrapping a fridge, and I can pick it up free, will the pump be any good?

Posted by Toga_Dan 4 years ago

Can you freeze dry food at home?

I would like to know how to freeze dry food. Could some create an Instructable How-To,... Can someone build a machine that freeze dry food? There are essentially three categories of freeze-dryers: the manifold freeze-dryer, the rotary freeze-dryer and the tray style freeze-dryer. Two components are common to all types of freeze-dryers: a vacuum pump to reduce the ambient gas pressure in a vessel containing the substance to be dried and a condenser to remove the moisture by condensation on a surface cooled to -40 to -80 C (-40 to -112 F). The manifold, rotary and tray type freeze-dryers differ in the method by which the dried substance is interfaced with a condenser. In manifold freeze-dryers a short usually circular tube is used to connect multiple containers with the dried product to a condenser. The rotary and tray freeze-dryers have a single large reservoir for the dried substance. Thank You

Posted by acomisp 6 years ago

Spray Paint Drying

I'm hoping someone here knows something about spray paint. Specifically why some spray paints seem to take forever and a day to dry. In the attached picture the paint on the left (Metallic) dried quickly, within about 45 minutes whereas the paint on the right (Gloss Protective Enamel) is still so wet at 24 hours that I can scratch it with my thumb nail. FYI, I used both paints, one right after the other, on the same kind of metal. So if someone could let me know why some paints dry slower than others and which kind of paints to avoid if I'm in any sort or a rush I would be most appreciative. Thanks

Posted by astro347 9 years ago

Erasing Time - Clock Schedule

This Trace of Time clock is a unique way of planning out your day.  Notes are written on the glass surface of the clock with a dry erase marker and are erased by the hour hand as time passes. found via make

Posted by Carleyy 8 years ago

Woodturning: My First Bowl

Just wanted to post pix of my first bowl, it's turned from endgrain green wood, either Chinese Tallow or Chinaberry, I forget which, found it on the roadside. Finished with wax, it is now slowly drying whilst wrapped in brown paper, hopefully it will dry without cracking.

Posted by Tool Using Animal 10 years ago

Dryer box

I'm been looking for instructions on making a box to dry  a 8.5" x 11" piece of "film". I can make the box, it's the electronics part I can't figure out.  My idea is that a small heater on one end of the box, and a small exhaust fan on the other end will be sufficient to dry my film.  Does this make sense?

Posted by jrav 8 years ago

Making a dry sauna heater with parts from a 120v hot plate

I have a small closed in shower (31" X 31") and have sealed the 6" opening over the door. It makes for a great steam room. However, I love very hot dry saunas. I have been wondering if I could make a small heater placed in the corner with one or more single burner hot plates and stones. I am wondering if this could be done safely if the AC lines are totally protected. I could easily turn of the power when showering. I welcome any feedback.

Posted by hywmiles 10 years ago

Storing Wheat

Hi, Our group is buying about 1.5 tons of wheat.  We are packing it in 5 gallon seal-able buckets after doing the dry ice thing.  We intend ti use some of the wheat as seed in the spring (probably many springs). QUESTION:  Does the use of dry ice affect the viability of wheat?  If so- is there an alternate long-term storage method we should be considering? Thanks

Posted by FrdF 7 years ago

Whats the best type of glue?

Whats do you think is the best type of glue for wood? The one that would dry the fastest and be the strongest?

Posted by Weallliveintheyellowsubmarine 11 years ago

Dry-Ice Martini and Electric Cake - Hungry Scientist and Instructables in the NYT

The Hungry Scientist Handbook, Turkey tek, and Instructables were the topic of Dry-Ice Martini and Electric Cake in the New York Times:WHEN does a recipe become a science project?Is it when the compulsion to create an edible electrical circuit keeps a cook up all night, wrapping Twizzler string licorice in pure silver?Is it when a baker decides to bake 20 equilateral-triangle-shaped pecan pies for Thanksgiving, then attach them together with magnets to form an 80-serving icosahedron? (The recipe begins with 30 cups of flour and 2 large sheets of 24-gauge steel.) More news and press about Instructables here.

Posted by ewilhelm 10 years ago

uhg halp!

I left my new sharpie out in open air for like a min and now it's getting dry and not working well help and suggestions to revive the ink?

Posted by Sadam and Osama 11 years ago

Remote Valve?

I have an idea for a project, and I am trying to figure out a simple mechanism or valve that will be able to release fog produced by water and dry ice into a relatively small diameter tube. I would like it to be activated via remote, but other ideas are appreciated. My plan is to have a sealed container with water and dry ice on my back. Tubing would lead from the container to a mask I'm constructing. I am just trying to figure out a way in which I can control the release of the fog.

Posted by Moerdith 7 years ago

Convert sound signal to dry contact signal?

This might be a bit of a strange question, so will try and word it so someone can follow along. I posted a thread previous about getting my doorbell chime to work with SmartThings.  What I now have is a sensor with external input.  The keep it simple, there inputs are GRND and IN.  When the 2 inputs are joined, the device reads CLOSED and when they are apart, the device reads OPEN...perfect. I've been trying to find a point on my Chimes circuit board that would create a dry contact between 2 points to trigger the sensor, but I'm not having a great deal of joy. There are however, 2 wires running from the board to a speaker in the unit.  Is there anyway I can get convert the signal to the speakers into a signal which would connect the 2 wires? I know a speaker is an electromagnet that responds to electric signals, but wasn't sure if there was something preventing the contact being made between the 2 sensor wires

Posted by K20Evo 3 years ago

Finding that perfect brownie

Ok, I have tried and tried and I need some assistance from the Instructable community. My favorite brownies in the world are Ghirardelli's Triple Chocolate Brownie mix. It's a delicious chocolatey blend with 3 different chocolate chips inside (semisweet, milk and bittersweet/dark). The batch comes dry and you add 1/3 oil, 1/3 cup water (though I use coffee), and 1 egg for a 8x8 pan of brownies. My issue is I want to figure out how to make these from scratch. As much as I love them, I'm a scratch kind of girl and I just don't feel like I can call a recipe mine if I'm using a box mix. There's tons of brownie recipes online but none that seem similar. I figured out that the dry mix must obviously have their cocoa powder in it, but I can't find a recipe that has you add egg, oil and water to a dry mix. Many of the recipes I found have you melt one of the chocolates into your chocolate batter, rather than use cocoa powder, but I don't think Ghirardelli does that, unless I'm wrong. And if they did, how would it come as a dry mix? Others might have used powder but then they call for a lot of butter instead just a 1/3 cup of oil. Are there any brownie experts who can figure this one out for me? 

Posted by Rahkitty 4 years ago

A "death" in the family...

#2 son dropped his "Tamagotchi" in the toilet this morning (fortunately before use!).I fished it out, opened it up, took out the battery and left the whole lot on the CH boiler to dry.When dry, I put it all back together and the screen showed, as expected, an egg.Unfortunately, this evening it is still an egg. Apparently this is not supposed to happen. It should have hatched by now. The reset button has been no help.Does anybody have any ideas on how to kick-start the wee cyber-beastie into hatching, or do I have to sneak out to the toy shop and buy a replacement?

Posted by Kiteman 11 years ago

Restore Painted Letters on Keyboard Keys

White dry transfer letters can be purchased from: http://www.ebay.com/itm/Woodland-Scenics-Railroad-Gothic-Letters-Whit-WOODT507-/130726408706?pt=Model_RR_Trains&hash;=item1e6fe6b202#ht_3538wt_785 for $6.67. The letters are typically used in model railroading. Clean the keyboard keys with a mild cleaner on a damp cloth. Wipe dry. Remove any partial letters with a pencil or ballpoint pen eraser. Apply the letters to the keys per the instructions on the package. A dull pencil works well. Lightly coat the key with clear nail polish. Should look like new and will last longer than the original.

Posted by rwemerson 6 years ago

Melamine boards

I bought a large melamine board from the local hardware store to use as a white board, but I have a problem. The problem is that, the whiteboard ink beads and dry up within a few seconds after writing. How do i fix this?

Posted by bosley 7 years ago

Fire Kit

Here's an idea for a fire kit, not necessarily for survival or emergency. Someone want to make an ible out of it ? The idea here is that a coke can, once  completely dry, could provide both lightweight waterproof storage for tinder and lighting , and  also be an item to help structure the fire layout to provide proper draft and heat containment, . After the can is  dry you could stuff in some matches and cotton lint or vaseline balls, maybe a magneium stick. Maybe an obviously small candle.  Some items may need wrapping.  Then duct tape the hole When it came time to use, open with a knife. How exactly I would use the can to structure the fire is an open question.  

Posted by Wilmette 6 years ago

Jig-A-Patch Spray Spackle Review

The makers of Jig-A-Patch sprayable spackling drywall filler sent us a can of their product, and asked someone from Instructables to review it. Over the weekend, I smashed a wall carrying something up the stairs, and had the opportunity to try it out. The packaging is pretty cool, but the spackle itself is too liquid, and flows too easily. After spraying on enough to fill the hole, smoothing it flat, and removing excess, it still tended to flow out of the gash leaving a dimple. After letting it dry, I had to put on another coat of regular spackle, which worked perfectly.I'll stick with regular spackle for now.

Posted by ewilhelm 10 years ago

More club buddys needed!

We need more club buddys!(Sorry, my imagination just went dry and that is the only phrase that I can think of.) Does anyone want to help and does anyone agree with me?

Posted by will421 9 years ago

A soft but sticky heart

I made a super delicious dessert, named soft but stick heart. it's quite easy. Just put sticky rice dough inside of chineses dry date, and boiling in little syrup. Done. For diet reason, I used sucralose instead of sugar.

Posted by quinault 10 years ago

Does anyone do Automated Car Wash System by using Arduino with LDR?

I wish to know how am i able to write a program which i could control the water spraying, brushing and drying by using arduino.  My project is to use a laser pointer which will send the signal to the LDR and it will trigger the water to spray, brush and dry the toy car on the conveyor belt. Can anyone help me?? I'm a diploma student, and my supervisor is a mad man which who asked me to do such project which he doesn't know either.  The first image is how i think my circuit looks like The second image shows what i had done

Posted by ahchuan.ycc 3 years ago

The clock that erases itself

This clock has an eraser in the hour hand so it can erase the marks on the face of the clock as it goes along. Pretty good way of clearing the way for more events, but you might want to write down those notes somewhere else as well. Dry Erase Clock

Posted by fungus amungus 9 years ago

Steampunk Gets Real

As reported on New Scientist today, the British steam-powered vehicle Inspiration broke the previous land-speed record for steam power, set back in 1906. The fastest of the two runs was 151 mph, set on a dry lake bed at Edwards Air Force Base.

Posted by kelseymh 9 years ago

Request: Fogscreen

I read an article about these screens that are made from dry fog that can be used in your home as a 100" projector screen, just thought that some one on instructables might fancy building a homebrew version and sharing the knowledge. www.fogscreen.com is the official site. I don't have a few grand to spare though!

Posted by the.dwarfer 10 years ago

Question about Sugru.

For anyone that has used Sugru in the past, how much grip does it have once completely cured and dry? I was wondering if I could use it on the outside of a 3D printed wheel to get good grip like a rubber tire. If not any suggestions for other materials I could use? Thanks!

Posted by Patrick S 5 years ago

Anything that can explode using CocaCola

I heard of using mentos which will force the coke out and also dry ice in a coke bottle. can anyone tell me what can i use to explode using coke (not drugs, cocacola). (homemade stuff only? i know this is a crazy question but i love explosions

Posted by godwin123 11 years ago

Where to get purple UV inks for PCBs?

Hi all! If someone knows, please share the info on where to get purple PCB ink. Or maybe dry film (solder resist)? I'm searching the Internet, but I'm not having any luck. It looks like I'll have to mix it by hand by combining blue and red..

Posted by tlakic97 4 years ago

Polyurathane on wood floors

Going to be refinishing some wood floors.  Sanding off all the old finish, then applying an oil based stain, and finaly polyurathane.  My question is can you use a water based polyurathane over an oil based stain?  If so, how long do I have to let the stain dry before applying the polyurathane?

Posted by etcmn 6 years ago

you can make zippo wicks

Hey i just realised you can make zippo wicks just soak a ball of string(cotton) in salt water for a day then take it out to dry and leave it for a few days until dried then plat them and youre done!!!!

Posted by sharlston 9 years ago

The Sliding Rocks of the Racetrack Playa Mystery

"One of the most interesting mysteries of Death Valley National Park is the sliding rocks at Racetrack Playa (a playa is a dry lake bed). These rocks can be found on the floor of the playa with long trails behind them. Somehow these rocks slide across the playa, cutting a furrow in the sediment as they move. "The Question remains: "How do they move?"LINK

Posted by bumpus 10 years ago

Bike chain lubes?

right so for last year i have been using 3 in one on my bicycle but i ride in dry arid usually dirty conditions and the 3 in one gets filthy very quickly . so i read online white lightning is good for my conditions so i used some today.  what kind of lubes do you use and why?

Posted by Malhecho 7 years ago

How to read the value in farad of this capacitor?

Hi,  This is from a 1964 function generator and the capacitor of now "dry". Its maked as: ----------------------- SPRAGUE FILMITE "E" CAPACITOR 10.0 - 30 DC  127P1069R3S4 MADE IN U.S.A ------------------------ There picture is not THIS ONE, but its pretty close (of the big one) i would like to now what is the value of my capacitor. (10.0 - 30 DC) Is it 10mF? Thanks

Posted by johnybody 7 years ago