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The poop is a fertilizer and the plants use the ammonia/nitrates... I think it’s the nitrates :-) it works really well. This is an excellent instructable, by the way! You can also find info at teachables.org... there is a system called barrel Aquaponics that works well.

WOW. Seriously well done 'ible. Nicely laid out, excellent inclusive language, great documentation and supporting diagrams. Video's clear and applicable; everything very well done. Thanks for sharing!

I've been teaching shop for 22 years and our school has a dedicated staff that works with kids with disability and mobility issues but it is often tough to put the two groups of kids together in a positive way. So often the mainstream kids are unsure about working with a kid who has a tough time communicating and the groups will move apart, even in the closed area of a shop. I am SO inspired and moved by the way you have so seamlessly integrated these kids in a collaborative space where differences are celebrated AND not even noticed at the same time. Beautiful!! Very well done, not only as a great 'ible but a clear visual of what education can look like when the right people decide to do it. Thanks so much!!

A part of the process you didn't mention is using worms in the grow media to help build the system. What do you do instead of them or are they needed, in your opinion?

really excellent 'ible. Your writing style is interesting and personable and very thorough! Thanks! Voted!

I love Instructables. This is THE coolest project.

I have to chime in as well and say thanks for posting a "destructable". It really is good to hear how other people have messed up and still didn't quit. Well done! I think the finished product looks great!

Well done! Thanks for elaborating on the process of how the flash illuminates individual drops... giving the illusion of stopping in the air. I wondered how you would describe that and it was very clear!

Excellent 'ible! Clear, well documented and well shot. Thanks!

Well done! I really like the double sided tape idea. You might also like the Selig Z-Chair design of the same era. Thanks for such a comprehensive post!

While I agree that I personally may not use this, I can be constructive and kind. For example, rather than saying it is "useless" please try to see that the problem is that YOU might not be able to understand the point. Getting on his case by nit-picking small details, that frankly are not very accurate or helpful, is not the point of Instructables. Please take a minute to understand the point of this resource, which is to learn and share. If you want to make specific comments that are constructive, go for it. To be rude and obnoxious is not welcome here and would be better on other resources; not Instructables.

well done! Thanks for posting. I would really like to build this for my shop classroom.

Bear in mind that Instructables has a "be nice" policy. I think we can agree that this is not a rocket stove as such but please remember to be constructive in your comments.

That is a great idea! Nice and simple and easy to do with a group of students. Next time I do the project, i will give it a try.

I have trie a few of your projects over the years and am pretty much the same type of person so I have to admit your lifestyle choice and change is pretty inspirational! Thanks again for a very cool 'ible.

Well done! I build these with my students after seeing kalimbes while I lived in Rwanda. I really like how you have used all sorts of different materials. Your way of fastening the crossbar is very much like how it was done in Africa. You might try using steel that is not high carbon, like tool or spring steel by bashing it with a hammer until it flattens. This tends to harden the material and turn it into great tines. Thanks again for the great 'ible!

The list so far is pretty impressive! I am always thinking in terms of making 60-70 projects so I always buy in quantity. The plumbers snake idea is really brilliant though! I think next time I will send out the students to see what they can find.

This is an exceptional 'ible. Here's why. It is well written, clear and amusing. It has lots of pictures. The steps are well laid-out and defined. Great job! My 15 year old daughter is into photography and we tried some water balloon popping which turned out okay but this 'ible will be the project this week! Well done!!

It is a good idea, nice and simple and effective but I have to agree with robweeve... it actually is a conventional stove, not a rocket stove. I built a rocket stove and a handful of fuel would last for 25 minutes and make a VERY intense, blue flame. Having said that, this is a nice, simple and usable stove!

Excellent! I will try this out for sure. Thanks for such a well-written and comprehensive 'ible.

Well done! Excellent tutorial.

Thanks! Great 'ible. I read it through just for amusement... your writing is very entertaining!

Heres another version I did a while back...https://www.instructables.com/id/A-Wire-Maze-With-an-Electronics-Twist/

Very well done. Your English was fine!

Well done! I think this would be a great project to do with a tech metal class. If I do it I will send a set of pics your way if you are interested.

Well done! I appreciate that you are willing to document your mistakes... sometimes I think I am the only one who does something goofy. The ring looks great! There must be a way to jig the dino poop in place while drilling the second, larger hole and prevent breakage?Well done!

Great job! I think I might try it with my woodworking class. Excellent details with the 'ible. A small side note... I know that it means less control; but what about using a pushstick or cutting jig with the bandsaw cuts? I watched the video thinking it would be great to show to a class but wow man, I worry about your fingers. Can't show that to a group of kids or I will have a few rides to the hospital with students. :-)

wwwwaaaaaa????THAT is impressive! Love it.

I will do this with my grade 7 woodworking class! Very nice 'Ible!

Nice and simple! I like the idea of trapping the bearing between the pieces of angle iron. What about adjustability for bearing tension? Offset bearing bolt maybe...?

there is a version of the useless machine that uses an arduino with all sorts of different ways of hitting the switch... a slow, prolonged one, a version where it shoots out really fast, one where it fakes you out. pretty cool. This one is excellent though, because it uses a 555 which is great! nice thinking "outside the box" sorry. had to use that.

It is a lovely amp. Well made and I am sure it sounds great. My only criticism is that Instructables is about providing the info to allow others to build something. If you could post a detailed process or schematic this would be an excellent 'ible and I would build it for sure!

Well done! I agree with people who are commenting that it is a trick and not a puzzle but really, that doesn't matter. Its an excellent 'ible, well laid out and clever. Thanks! BTW... just as a warning... using a router with a small round disk is pretty risky. Perhaps come up with a jig using the holes to stabilize the disk and stop it from spinning by accident?

As a fellow contest winner I must say your instructable deserved the Grand Prize. Well done!!

Well done!!

Excellent idea!!

Well done! Clear 'ible and in a nice personable voice. My daughter is excited to try this! (I voted for you BTW) -stu (the leather sandal guy)

Very classy! Thanks. What is your entry?

Thanks! That really is a compliment. I don't sell them but do check out Davy's site. He does sell them and he is an amazing craftsman!

Excellent! Thanks for putting this out. I am thinking it would also be useful for silver soldering when working with jewelry.

What?? NOT super hip? I guess my ancient fashion sense is way out. :-)

Thanks!

Thanks to all the great comments! I updated the 'ible to include a link to Ebay for the Cut Tacks used in the step "Nailing Uppers to Sole". Thanks cuyler1 !

Awesome ideas! I would like to tool the ankle strap... maybe a subtle pattern around the edges? My daughter wants to try these but with a more feminine touch and bejewelled would be perfect! Please try your ideas than take pics! I only nail through the two layers of leather... the upper and insole. I Barge the rubber sole onto the insole after I have finished nailing. Video is in the future for sure if I get a chance!

Great question! When I lived in Rwanda the shoemakers would find old tires than use a hacksaw to cut the rubber into usable sizes. The catch is to try not to use steel-belted type because the steel bands are super sharp. Of course you can still use them but be very careful. I would suggest looking for rubber in your local business listings or call up your local shoe repair places and see if they will sell some to you. Please post pics!! :-)

Thanks! Hopefully not too wordy... i tend to ramble :-)

Thank you so much for the great feedback! I really appreciate it!

Thanks! I really enjoy doing this stuff :-)

Thank you! I really appreciate the feedback.

Thanks! Give it a try and post pics of the end result!

Excellent! Thanks for making such a clear and concise 'ible. It has inspired me to try forging a knife rather than using a hacksaw and files. I also appreciate the idea of using a chain. Of course, people may be critical about specific metals, terminology and working temperatures but I think that is missing the point, which is to TRY and do your best to create something. Especially something that you may not have tried before. Thanks again!

This reminds me of Crocodile Dundee who, in one scene was shaving with a bic until the lady love interest was in sight at which point he switched to a huge manly knife. Why do this 'ible? Because we CAN. Awesome!

I have had a similar experience using a router to clean the bottom of a maple bowl I spent many hours turning from a solid blank... Loss of control and BAM huge groove along the side of the bowl. A friend used a router to do a similar thing as you but his hand was the object of the routers attack. Not pretty.