Search for flask in Topics


how to make a flask?

I need to make a flask to hold a decent amont of liquid and to keep it hot for long, help???????!!!

Question by aimz.101    |  last reply


How do you make a small, concealable wooden flask?

I need to know how to make a concealable wooden flask that's safe to drink out of. if someone could show me how to make one, i would appreciate it greatly.

Question    |  last reply


How do I drink froma vacuum flask?

I got a vacuum flask that resembles a shotgun shell for Christmas, but there is one problem - the brass comes off, as it is a cap, but when I push the button on the container, which I though was to drink from, water comes from around it, spilling it all over my chest. This seems like potentially dangerous flaw, as most people store hot drinks in their flasks. Any help would be appreciated!

Topic by Bran    |  last reply


Can I store ginger beer in screw-top metal flasks?

I used to make ginger beer as a kid in England when there was ample access to screw-top soft drink bottles, but now they are like hen's teeth. I have been saving these sturdy, metal (aluminium, I believe) screw-top flasks which seem to be lined with some plastic material. So, can I ferment my ginger beer in these flasks, as opposed to the always stipulated "glass screw tops"? I am sure they are strong enough to withstand the pressure buildup. TIA

Question by TheGarpster    |  last reply


How do I get RPi flask server to control Arduino over wifi?

I have a RPi web server running flask and a wifi enabled Arduino in my garage to monitor and control various items. I need a way to control the Arduino from the RPi-hosted web page. I am just stumped at how to do this over ethernet/wifi/TCP/IP. Any suggestions and help is greatly appreciated!

Question by ThothLoki  


dos any one know were to buy cheep laboratory equipment in The GTA or grater Toronto Area?

I need a: Hotplate, water condenser, three way adaptor,vacum adapter, claisen adaptor, three neck flask,sepparation funnel,dry tube, a flask, distilation colum,and a capillary with fine outlet.

Question by dciocoiu    |  last reply


Chemistry equipment list?

Hello Fellow Instructablers!       Its been a while since I have made a post but I am back with a burning question!  I have a great interest in science and chemistry and always wanted to preform experiments seen on page of authors like Nurdrage for example. But I have never had the required equipment or chemicals to do these. I have taken a high school chemistry class and gotten my stuff down and now am prepared to take on the challenge of the lab. I have a birthday coming on on the 24th and my parents said if I wanted to get into chemistry I should ask for equipment and chemicals or what I need for my birthday.      So I will, but I need help. From an experienced chemist or someone who has done this before. Can anyone give me a list of basic-intermediate lab equipment that is needed for most experiments? I don't want to get one of those chemistry kits for kids since those are so restricted and only let you do the experiments given to you, not very fun So I want to get free use equipment and chemicals for any procedure. But I have no idea what is needed most or least and would really appreciate it if someone were able to do this for me. Just in the comments or PM, have a list of stuff I should ask for if I wanted to kick start my chemistry, what that item is used for, the price and its frequency of use to determine what I should decide on if there were to be a conflict. I would really appreciate any help I can get from you guys cause my birthday is coming up soon! Thanks everyone! ~Ostomesto

Topic by ostomesto    |  last reply


I'm trying to develop a portable 'Thermos' style flask that heats around 500ml of water within 1 hour for on-the-go use.

I'm struggling to decide on a power source and a heating method. My tutor has suggested fuel cell technology but this is not readily available yet and although there is a lot of research on the topic, I have to create a working model. Any ideas would be greatly appreciated? Thanks for all your answers - much appreciated. I need it to heat 500ml of water to around 80C (enough for a hot beverage) so that the user can then add instant coffee/tea. I've looked into the technology behind zippo handwarmers using lighter fuel and a catalytic converter. I must either have a working model or perhaps just a prototype with a separate model simulating the technology within the flask. I need it to be fairly innovative so using batteries wouldn't work for this (plus it would be too bulky). Thanks again!

Question by ey14    |  last reply


Thermal insulation/cover for heating water bottle

I am building a water bottle that can heat water inside up to 80 degree Celsius for my engineering project. The design of the bottle is as follows:1. an aluminium or steel flask2. heating coil at the bottom of the flask(for heating)3. battery and circuit for the heating coil is located below the heating coil.I want to design a cover such that a person can hold the bottle when the water is hot. Also, i want to protect the circuit and battery at the bottom from the heating coil. How can I do this? (As of now, i was thinking to spray polyurethane foam around the bottle and use a plastic cover. Also, using a polystyrene board below the heating coil to separate it from circuit board/battery). Are there any other insulating materials that can be used? Considerations for cover and insulation: 1. Should be able to hold the bottle 2. Wash the bottle (hence, waterproof)

Question by NagarjunG4    |  last reply


Labware for Sale

Hey guys, Over the years I've collected a fair amount of glassware other junk from various institutions. Unfortunately, my preoccupations as such don't permit as much time to pursue my hobbies. However, I'm abroad now, and will be until mid-December, so I can't actually supply much more info than generalizations about the materials. If anyone's interested in hearing more, reply on this thread or message me. Also unsure about some of the fitting sizes. To my knowledge I'm pretty sure I have: 1 - Allihn Condensor 2 - 1L Round bottom boiling flasks sv. - 500ml Round bottom boiling flasks 4 - VariACs 2/3 - Cases of 15ml glass screw-top vials 2/3 - Cases of 15ml plastic screw-top vials many - Ground glass stoppers many - Ground glass neck bottles (apothecary style!) 3 - Glass retorts 1 - 5L Glass carboy with broken outlet nozzle 1 - Drying chamber with vacuum attachment 100's - 15/30 ml glass tubes They'll be shipped from New England; only domestic inquiries please.

Topic by Cat on my Lap    |  last reply


Physics Question?

Hi Everyone,   I know that this is not a project related question and I promise not to make it a habit, but my physics teacher stumped our class with a question today and I thought of all the smart people on Instructables one of you would know the answer. I have already search google to no avial. Is it possible to determine the volume of a flask given only the starting temperature/pressure and the final temperature/pressure? The number of moles are unknown. If it is possible how do you determine it? Thanks for your help!

Question by Hammock Boy    |  last reply


Building a custom shaped Compressed air tank

Hello, am looking into the possibility of building my own paintball markers, and wanted to do a custom way of using the air system, compared to most markers. I was thinking either a square shape, but after finding an article that was talking about water and gases tanks and why they are build cylindrical, i realized that maybe that might not be as easy or practical. another possible idea would be a flask shaped tank, but for the design am looking at it would need special commendations, none the less I wish to see if something like that could be possible.

Topic by Mac yet more irish    |  last reply


Wanted to explore the size and dimensions of a cartridge which might hold around .1 grams of CO2?

Hi everyone, I wanted to know how small a cartridge (probably made of steel) could be. If I wanted it to store 0.1 or even 0.05 grams of CO2, how small could it practically be? Could such a thing be made easily, do you think? If I wanted to move away from the standard cylindrical shape of my cartridge, toward a whisky flask shape perhaps (something a bit flatter) how much more size would the cartridge have to be and would that be a lot more difficult and dangerous as a container? I would be much obliged for any kind of input. Regards, Chris

Question by chrisdarroch    |  last reply


Update! Nominating Instructables to be Featured Group

Hello again. A little background on the NIF (Nominating Instructables to be Featured) Group, it is a group where people can nominate their favorite instructables to be featured in the group profile page. Click here to visit the group. New members are always welcome. This time there is a lot of exciting news to report: Newly joined members!! Thank you for participating. I can't wait to see your nominations! Locket Rocket The Ideanator Goodhart Hiyadudez Also there are newly nominated instructables. Drumroll please! Living Tealight holder made from hard drive parts by ChrysN Personalized Cards by gergi11 Technology Making a brass pocket flask by Vidar_76 (nominated by The_Ideanator) How to Make Your Own Screen Protector (for less than a nickel!) by jen7714 Put images inside QR codes by killerjackalope Workshop Sugru Soft-Jaw Pliers by mattthegamer463 (nominated by The_Ideanator) Some more news: Instructables such as Cinnamon and Sugar Apples by miso_soup, DIY Calligraphy by mhudnall, and How to Make Your Own Screen Protector (for less than a nickel!) by jen7714 got featured by a feature team member. That means that they were actually featured on the homepage. Congratulations! (A note: I forgot to add this to the groups forum topic post. Is there any way I can add it now?)

Topic by SkysTheLimit    |  last reply


Solvent that 100% dissolves gorilla glue? need castable material to chemically to "burn out" for a ceramic shell casting Answered

Hello. I am working on doing an aluminium lost foam casting of a small part. I read although hazardous, some had gotten successful results from using polyurethane foam (great stuff) in a mold, and proceeding as usual. I don't normally use great stuff, so I mixed gorilla glue with 1/3 water, stirred till I had small bubbles, poured into a silicone mold, and got a pretty good few castings that were VERY dense and hardly burned at all. In fact it was practically fire resistant. I threw it on hot coals and it took a long time to shrivel into a hard little mass So next time, I used dollar store foam board next, a la Grant Thompson, but with terrible failures. It seemed the foam board didn't burn very well either. A foam board riser had actually melted off and looked like it floated away in a bubble, although a regular styrofoam block I had cut to shape cast perfectly, but was too thick and the texture was too poor as the foam was so much less dense. It was mentioned in this blog post that someone used acetone to burnout a tricky patten for a lost foam casting, so I figure I have to do the same. My pattern is curing at the moment. But my silicone molds are far more precise and more detailed than my 2d representation I made with a wire cutter. So my question is there another material that is castable but water resistant, like styrofoam, that I could use a solvent to melt out. I can't really do  lost wax because I don't have the equipment and live in an apartment and have to do this stuff out on the beach. Also due to family reasons I can't be away from home for the time it takes to do burnouts, 6 hours for a full flask, but that's also the reason why I am doing the shell casting because I can't spend too much time away from the fam. Thanks for your time, sorry if I rambled. And thanks for all here and elsewhere who teach and inspire, even if they don't know they are doing it.

Question by sk8er6    |  last reply