Now this is just an instructable sharing my idea for a Water Circulating Shirt. I was going to do the build, but I didn't have enough time this week because I wanted to enter this in the keep it cool challenge.
CamelBack (a cheap one)
Clear Vinyl Tubing (not too thick)
Hot Glue
Shirt (maybe a t-shirt or an exercise shirt)
Turkey Baster (or some other manual pump)

What you will do is pound the tubing flat, but not too flat.   Line the inside of the shirt with the tubing. Place the tubing where you would want to be cooled off. Use hot glue to glue it down. Cut holes in the CamelBack just smaller than your tubing. Make sure to cut the holes at the bottom. Next attatch the tubing to the CamelBack using glue. Then attach your manual pump to the top of the CamelBack. Fill the CamelBack with cold water and some ice. Dont fill past the pump though. Then put the shirt and CamelBack on and pump away. Based on my research this should work. Unfortunately I haven't tried it so please if you ruin your CamelBack, don't blame me. Keep a look out for the step by step of this soon, and check out some of my other instructables. If you have questions or if you make one yourself put them in the comments below.
Turkey baster would not work without two check valves to eliminate back flow
To atatch the tubing u would use sowing string and go over it through the shirt then over again and almost do a cork screw with it
......maybe use silicon ( flexible ) instead of hot glue ( not so flexible) Thanks for your effort !
yeah definitely might work
Here's my 'structable...&nbsp;<a href="http://www.instructables.com/id/Too-Hot-Remove-heat-from-your-body-with-the-Back-/">http://www.instructables.com/id/Too-Hot-Remove-heat-from-your-body-with-the-Back-/<br> <br> I</a>t's larger than your idea but can be scaled smaller. I've built a dozen of 'em, they work! Sorry I missed the contest!&nbsp;<br> <br>
Very Cool. I like it
BTW what abut one those kerosene hand pumps instead of a bike pump, Already has tips to attach tubing and a fluid moving valve built in very little modding to have to do.<br>
Im not really sure if that would work because i have no idea how they work. I'll try to keep working. Unfortunately school has started so it will be hard to build and tackle school.
Good Idea I had something similar in mind using a small fish tank pump and an a canteen, and a roll of flat gel pack tubing, however don't stop the build just because the challenge deadline has passed, I'd like to see the finished product.!

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Bio: DIY is my addiction. It's fun and exciting. If I see a fun and interesting project, I have to tackle it.
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