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Gluing your rolling pin blank on a diagonal like that..... just wow. Having the pattern of your contrasting woods be able to dance & move & spiral around as you use it, must look phenomenal. Excellent project, well done!

Hmmmm... Cotton ball "roving" mixed into your resin, very interesting. I was thinking perhaps a two part press mold would form your bowls closer to their finished shape & maybe compress a lot of the air voids out. You could still finish turn them, but perhaps save a lot on material.Really appreciate your including the "trial & error part of your project. Half the fun of trying something new is the basic research & development, figuring out what works & what doesn't. Happy turning :)

I think OculumForamen is spot-on, with his assessment of the Nay Sayers. Apparently "Please be positive and constructive" is a concept beyond some people's grasp (or agenda).Lets see, Anders644PI, you took the time to create and share a multifaceted instructable, including:*Custom designing 3D printing enclosure parts, and including the files.*Embedding an "exploded view" animation of the enclosure assembly.*Offering suggestions of low-tech enclosure options, for the 3D parts (cardboard, wood).*Providing detailed installation/set up instructions for the operating system, RetroPie, touch screen, ETC.Wow, really well done!The thing about trolls is, they're easy to spot. Whether they're the "grammar police" or "efficiency experts" or the "I'm smar…

I think OculumForamen is spot-on, with his assessment of the Nay Sayers. Apparently "Please be positive and constructive" is a concept beyond some people's grasp (or agenda).Lets see, Anders644PI, you took the time to create and share a multifaceted instructable, including:*Custom designing 3D printing enclosure parts, and including the files.*Embedding an "exploded view" animation of the enclosure assembly.*Offering suggestions of low-tech enclosure options, for the 3D parts (cardboard, wood).*Providing detailed installation/set up instructions for the operating system, RetroPie, touch screen, ETC.Wow, really well done!The thing about trolls is, they're easy to spot. Whether they're the "grammar police" or "efficiency experts" or the "I'm smarter than you" or the "why don't you just go buy one" or even the "I don't like what you named your project" variety, they all seem to share a commonality. They criticize, fault find, and complain about OTHER people's work, but they don't ever actually DO anything creative themselves. I hope you do keep dreaming, planning, building and sharing, cause it drives the trolls absolutely insane. Cheers :)

Is there a specific purpose, you ask? They used to sell these as hand warmers. They were thick, well sealed plastic pouches, with the sodium acetate solution and a metal "activation disk" inside. You "snapped" the flexible disk to start the hot ice reaction. To recharge, you put the pouches in boiling water, until the ice re-liquefied. What a great teaching aid for showcasing that latent heat is given off by liquids, when they freeze (yes, even water). Great instructable.

Very impressed with your attention to detail & the level of finish on your blade. Well done :)

A caution about the suggested substitution of table salt in this reaction. Back in my junior high school days, I wanted to emulate our science instructor's hydrolysis experiments @ home. Being fresh out of sulfuric acid (H2SO4) I substituted table salt (NaCl) to increase the electrical conductivity of the water. Little gas bubbles formed on both of the carbon rod electrodes when I attached their wires to a 6 volt battery. Ah-ha, I thought, I've done it. But something wasn't quite right. There was a strange white residue on the bottom of my Mom's plastic salad bowl (my reaction vessel) and one of the gasses didn't react as expected during the flame test & it smelled peculiar. Years later I discovered that when you hydrolyze salt brine (which is what I had been doing) you generate CHLOR…

A caution about the suggested substitution of table salt in this reaction. Back in my junior high school days, I wanted to emulate our science instructor's hydrolysis experiments @ home. Being fresh out of sulfuric acid (H2SO4) I substituted table salt (NaCl) to increase the electrical conductivity of the water. Little gas bubbles formed on both of the carbon rod electrodes when I attached their wires to a 6 volt battery. Ah-ha, I thought, I've done it. But something wasn't quite right. There was a strange white residue on the bottom of my Mom's plastic salad bowl (my reaction vessel) and one of the gasses didn't react as expected during the flame test & it smelled peculiar. Years later I discovered that when you hydrolyze salt brine (which is what I had been doing) you generate CHLORINE gas & a white precipitate of SODIUM HYDROXIDE (LYE). So, if your goal is an oxy/hydrogen generator, don't use table salt in the mix. Have fun experimenting, but be safe :)

Sigh... even when you CLEARLY state that it's NOT a perpetual motion or energy generation device.... the haters & hyper efficiency (hydrogen leakage) Nazis, just can't resist kicking you in the teeth :(I, for one, was impressed with the construction of the generator. I particularly liked the overlapping plate electrodes; its like you took the concept of the anode/cathode plates in an electrochemical cell, & used them in reverse to split your water. Being able to clearly see the disassociative process, magnified through the curved sides of the generator was also a nice touch. It WAS sexy; like something you'd see in a James Bond film.Now, for those who've got a problem with this water cracker's comingling the gasses; yes, yes, yes, a gas mixture of 2 parts hydrogen & 1 part oxy…

Sigh... even when you CLEARLY state that it's NOT a perpetual motion or energy generation device.... the haters & hyper efficiency (hydrogen leakage) Nazis, just can't resist kicking you in the teeth :(I, for one, was impressed with the construction of the generator. I particularly liked the overlapping plate electrodes; its like you took the concept of the anode/cathode plates in an electrochemical cell, & used them in reverse to split your water. Being able to clearly see the disassociative process, magnified through the curved sides of the generator was also a nice touch. It WAS sexy; like something you'd see in a James Bond film.Now, for those who've got a problem with this water cracker's comingling the gasses; yes, yes, yes, a gas mixture of 2 parts hydrogen & 1 part oxygen would burn EXPLOSIVLY. How about you show us YOUR version, with the addition of plastic baffles that would keep the generated gases separated? For those who've got a problem with the gas permeability of the main generator vessel, how about you show us YOUR version? Make it out of glass, or stainless steel, or transparent aluminum, or negativium, or whatever material naysayers use, & stop wasting all your time busting people in the chops for actually MAKING something & posting it for the rest of us to admire.Great concept, build & instructable, K of R. Hope to see more from you.

Ever notice its subtle little distinctions, that make for a great idea? The "freeze 1/2 a plastic bottle of water, by laying it on its side" idea, is just BRILLIANT! This was one of those "DOH, (head slap) but of course" moments. Thanks for sharing da hacks.

Great job, using a plastic bucket for a solar still. I always wanted to try building a "traditional" one, but balked @ digging a 4 foot wide, 1 & 1/2 foot deep, cone shaped pit in the sand. This is just the perfect size to prove proof of concept & actually try the technology. Now, if we can just get some of our brainier DIY types to devise a "home built" semi osmotic membrane, we can go large scale on desalinating all the fresh water we're likely to need for a day @ the beach. Cheers :)

Wow, so much more impressive than the iron filings, on a plate of glass, most of us remember from elementary school. Much of what I remember being taught (about magnetic phenomena) was frustrating because the instructors didn't have any ready way to show us what they were teaching. "Magnetic flux is invisible" they'd say, "but trust us, it really does thus & so". As seeing is believing, what a marvelous teaching aid this would be. Besides making magnetic flux highly "visual" it could be used to demonstrate all kinds of claims about magnetism, like how introducing a metallic object into a magnetic field, changes it (like with the induction coil on a metal detector). I could even see if my old science teacher was actually telling us the truth when he said &…

Wow, so much more impressive than the iron filings, on a plate of glass, most of us remember from elementary school. Much of what I remember being taught (about magnetic phenomena) was frustrating because the instructors didn't have any ready way to show us what they were teaching. "Magnetic flux is invisible" they'd say, "but trust us, it really does thus & so". As seeing is believing, what a marvelous teaching aid this would be. Besides making magnetic flux highly "visual" it could be used to demonstrate all kinds of claims about magnetism, like how introducing a metallic object into a magnetic field, changes it (like with the induction coil on a metal detector). I could even see if my old science teacher was actually telling us the truth when he said "there's no known material that can block magnetic flux". Thank-you for sharing Mr. Vanderelli's invention with us all :)

Kudos to you, for coming up with an inventively effective way of discouraging the "work place hyenas" from scavenging your lunch. Most times all you need do, to protect your possessions from these parasites, is to make them "appear" undesirable. Where I work, a bottle of rubbing alcohol (used for cleaning) would regularly disappear from my toolbox, presumably "borrowed" by people too lazy to get their own from the supply cabinet. I relabeled a replacement bottle, with the "toxic sounding" chemical name for rubbing alcohol (dimethyl carbinol C3 H8 O) and...no more missing bottles. Way to use your smarts, to keep what's yours :)

That's a slick trick, threading cordage through the straws, to (snicker) tie your tetrahedrons together. Trying to accurately position straws or sticks together, & then glue or tape them in place is a royal pain in the phatoot. This would be great for making tetrahedron kite frames. Good instructable.

Aw yeah. Gonna make some room in my closet tonight & roll those T-shirts up & back into the dresser drawers, where they belong. Great instructable.

I've seen plans for a "make your own" anvil before. I recall the instructions called for surfacing the top with manganese "hard facing" rod, the kind they use to give backhoe buckets & such some abrasion resistance. Claim was, two overlapping layers of hard facing, applied perpendicular to each other & peened down during application, gave a fairly smooth surface, with an initial Rockwell hardness of around 50. Just a thought :)

Incredible job! That's some serious "research & development" you've done there. Thanks for sharing your HDPE repurposing discoveries, with the DIY community :)

I've seen commercially ground & polished concrete floors before, that were just mesmerizingly beautiful. The quality of your finished top was most impressive, smooth & clear. Great idea, BTW, using that cement slurry to "fill the pores" of your casting. Ah, there's SO many possibilities for embellishing concrete; using two or more differently tinted concretes for marbling, surface stamping, acid staining, embedding aggregates or glass. Most of us don't have the hundred$ or thousand$ for commercial stone tables or countertops. Besides, real cut stone is not actually DIY friendly in the first place, is it? :) Thanks for the inspiration & tech tips Bro. Think I'll try a small table first, before I tackle that kitchen counter :)

Although I'm not into drones (yet) I was impressed by how clear, thought out, & well designed your Instructable was.But it was your PVC forming technique that just jumped off the screen @ me & got me to thinking. Who knew that the thermal cooling, that granite counter tops offer, works on PVC as well as candy & pastry :-) Your cutting board/granite counter top "forming press" made for an impressively smooth & symmetrical transition, of the round to flat sections of your motor mount arms. I've always enjoyed using PVC for light structural applications. Downside, of course, is that making any interconnections requires expensive solvent glued fittings, that only seem to come in 45 or 90 degree angles. Flattening the end of PVC pipe just never even occurred to me be…

Although I'm not into drones (yet) I was impressed by how clear, thought out, & well designed your Instructable was.But it was your PVC forming technique that just jumped off the screen @ me & got me to thinking. Who knew that the thermal cooling, that granite counter tops offer, works on PVC as well as candy & pastry :-) Your cutting board/granite counter top "forming press" made for an impressively smooth & symmetrical transition, of the round to flat sections of your motor mount arms. I've always enjoyed using PVC for light structural applications. Downside, of course, is that making any interconnections requires expensive solvent glued fittings, that only seem to come in 45 or 90 degree angles. Flattening the end of PVC pipe just never even occurred to me before but, besides mounting points, I'm thinking this would be a great way to bolt PVC struts or braces together, @ any old angle you wanted. Model towers, bridges, domes........... I gotta go build something now. Thanks for the inspiration Bro :-)

Hot ice is fun to play with. For a more in depth explanation of the "how to make it" process, check out the instructable posted by C Stokenbury in December of 2011.

Great repurposing of those skies bro. There's something truly satisfying about being able to look @ an object, see its potential for something other than it's intended purpose, and then being inspired to transform it into a totally different creation. Loved your laid back approach too; clean out the shed, make a bow, shoot some arrows, drink some beer. Great job.

Great repurposing of those food containers. I really liked the multiplicity of your jar, within a jar, design. Using the inner jar to serve as both the battery chamber & a form to wrap your LED spiral around. Brilliant! (Pun intended) :)