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I would remove the spring before soldering the 2 tubes together. Didnt the heat wreck the spring?
why is this in the "untouchable" contest?
cardboard + hot glue + spray paint.
after reading the title, I took a second, then a 3rd look at cover pic. Only then did I notice soft focus on blue car, and a different POV of the trees as reflected in the 2 windsheilds. If ya havta look thaty close, ya desreve to see Somethin, right?
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https://en.m.wikipedia.org/wiki/Girandoni_air_rifleI'd not recommend fabricating your own unless you are an excellent welder.
sounds good. Get polarity right.
connect wires between the base and the tool. If the batteries are truly useless, pull em out and recycle em at Home Depot, Best Buy, etc.
https://www.amazon.com/dp/B00T6CKSGY?ref_=pfb_4edd48ldmg0g0bkb8bghd0fd70a9&tag=hydfbook0e-20&ascsubtag=pfb-P01-V02-O2-T1-HI-4DCJUB or get /make a bushing.
can u run it with it plugged into the charger?
I've discovered that it is often cheaper to buy a manufactured item than to buy the materials to scratchbuild it. Nonetheless, "off the shelf" frequently does not fit my needs. There are times too, when i don't wanna waste my efforts on worn out materials.
try searching uspto.gov. or onlone manuals with diagrams.
i , too was thinking ball detent.
there is a camera on the market which follows a subject. I don't know how. perhaps learning how this works will give you ideas. infrared? ultraviolet? radio frequency? I don't know.research and share what you learn.
"VOID YOUR WARRANTY" Contest. :D
I just got a cube at thrift store . will havta try this
I'd like to see the steering mech kept below the deck. Sooner or later, the sled will stop while rider continues on.
possible solution. Get a little electronic blood pressure cuff. Gut it for the valve. 3v. 3 mm.
I try not to re-invent the wheel if i can help it. So, yeah. Shoppin is good.My French aint so good, so i ran a googletranslate.neither of those is CURRENTLY available. But maybe this is an indication that french speakers buy and sell this more often.3mm to Tube 3mm Gas Solenoid Valve Solenoid DC 5V 0.4-0.5kgf / cm2 From DealMux Be the first person to comment on this article Currently unavailable. We do not know when or if this item will be back in stock. Product Name: Electromagnetic solenoid valve; Rated voltage: DC 5V; Current Rating: 263mA Stroke Rating and Strength (Min.): 0.4-0.5kgf / cm²; Max Power On Time: 1 Seconds (Max): 0.25 "x 0.39" (L * W * H) Electrified rate: 10%; Mounting hole connector: 3 mm to 3 mm External Material: Alloy, Electronic parts; Main Color: ...see more »I try not to re-invent the wheel if i can help it. So, yeah. Shoppin is good.My French aint so good, so i ran a googletranslate.neither of those is CURRENTLY available. But maybe this is an indication that french speakers buy and sell this more often.3mm to Tube 3mm Gas Solenoid Valve Solenoid DC 5V 0.4-0.5kgf / cm2 From DealMux Be the first person to comment on this article Currently unavailable. We do not know when or if this item will be back in stock. Product Name: Electromagnetic solenoid valve; Rated voltage: DC 5V; Current Rating: 263mA Stroke Rating and Strength (Min.): 0.4-0.5kgf / cm²; Max Power On Time: 1 Seconds (Max): 0.25 "x 0.39" (L * W * H) Electrified rate: 10%; Mounting hole connector: 3 mm to 3 mm External Material: Alloy, Electronic parts; Main Color: As Shown Image Package contents; 5g: 1 x Solenoid Solenoid Valve Weight
Is this meant to prevent accidents? Like proximity brakes on a car? Keep someone from driving wheelchair into a wall, pedestrian, etc?I apologize if I haven't read thoroughly.
I imagine that if 100 million people wanted this, it would be available off the shelf. Meanwhile,http://hackaday.com/2014/09/27/automated-watering-system-uses-neat-diy-water-valve/I've seen some factory pinch valves. some don't list required voltage. One valve I saw needed 24 v and was $150. I think that was medical equip.
here's a little insight into what is already out there. a 24 volt valve will run on 12 volts. the solenoid takes a quarter amp at 24 volts.This is current which is drawn as long as the valve is open. Can you afford that current with your batteries?with a Servo motor there would be zero current while the valve is open. only while the valve is opening or closing will there be current demand. option : use a servo to pinch a piece of soft tubing shut. This is your own valve and very simple. It should work fine for low pressure water.
I look forward to it. I have seen pizza ovens in which fire and bread are in there at the same time. I have also seen bread ovens in which the fire is removed entirely before bread is put in. residual Heat in the Stone Cooks the bread in these. There was 1 oven which was so hot that the surface of the breadburned while the inside was raw.
or. Replace the solonoid return spring with a lighter one. I do see 5v servos online. Use it to pull the solonoid piston. How would one rewire the solonoid to pull just as hard with less than 1/2 the V? Actually, test 1. Will an unmodified 12v solonoid open with 5 v?
how high is your gravity feed tank?Is the water in the tank cleanYou are using 6mm tubing?How far does the tubing go?
I read a theory about pottery. Adding organic bits and pieces will be like drilling a hole in a windshield at the end of a crack. it prevents the crack from spreading. If the clay was too solid, a crack would go all the way through it.
Nice build. Maybe a tutorial now on baking in it?
Nice build. Maybe atutorial now on baking in it?
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Cob Bread Oven, Back Yard Sourced!
Wood? Look for ibles on wood turning. Or even whittling.
when I want a coat hangar to be more pliable, I toss it in a fire to anneal it. This could also be done in an oven, but plastic coating will be nasty there.
If you've got time, maybe you could amp it up to 50V!!!(that's the max that osha considers safe in the rain, and such)
a saber saw is another option. People also do circle jigs with those.
If you are doing this project "for the exercise" then have fun. But if you just want an 18 v drill, may I suggest a new one from harbor freight? It's probably not Quite as good as a new ryobi, but is probably as good as a home brewed frankenstein drill. And it costs about a buck more than the motor you mention. And it comes with a battery.
you might wanna check the specs on the motor that came with the drill. Maybe it's already rated for more V.
what about a faster method of applying epoxy? Like spreading a thin layer on a scrap board larger than the maze, and dipping the maze onto this all at once.
cnc router may b better.
What shape are you cutting? Folk on this site may have alternatives.
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I've done this before. Maybe I'll do an ible.
Simpler to weld a narrow blade to the right length
Can you get narrow blades for curved cuts?
OptionSolvent welding cement for acrylic.
options. UV cure. Faster application method. Perhaps apply epoxy thinly to a sheet of scrap plywood, press this board against the maze, remove ply, and apply plexiglass. ,
for the past few years, scrapers, wire brushes and such have been sold to b attached to the sawzall. When I first saw this I said "why didn't I think of that??"
http://www.google.com/patents/US4989287The bottom of this page cites roughly 100 patents related to "electric toothbrush" from 1939 to 2016. Check to see if anyone beat you to it.
use ually when eye you'se bad gramma, eye kno it, and I coulda. It snot that I can't.
might b a bit dry. For an oven u mostly want heat, not airflow.
heheh. Save power. Use leds in your easy bake oven!
some vacuums hav a separat motor for th brushes. A switch is an option here. Some vacs hav 1 motor for everything. These typically hav a drive belt to the brushes. Removing th belt is an option for these.
how hot is the tap water at school? 60C is possible. Fill h2o bottl with hot, put in an insulated bag with yer chocolate bread, wait.
does your school offer chemistry? Metal shop? Home ec? If so, there may b othr options for heatin stuff. Hehehehe. Seriously.
Victoria. Australia, I assume, not canada
iirc, the easy bake oven used a 100w light bulb.
USB is 5v. 2 AA batteries will be 3v.
good idea . ive worried about that, too.
a bit ambiguous directions re: gluing 1end and screwing the other. also, what glue didja use?
https://www.instructables.com/id/PVC-Pipe-Battery-H...Funny that I got mine published a day after yours. I've procrastinated publishing for ages. I'm not sure if mine will work well with normal cells. The strips that hold my re purposed cells together kinda act as springs. Maybe if one had your spring at 1 end, and my nail at the other, it would be the best of both worlds. You've gotta cut yers open to replace cells having glued the ends. Mine is a simpler build, and easier to take back apart.
https://www.instructables.com/id/PVC-Pipe-Battery-H...Here's a 4 cell case for these cells.
I hear ya. I'm just struggling with the compromises between perfectionism, "gettin 'er done" and getting back to responsibilities.
All transformers are, but in this case, applying 9v ac to the 400 turn winding will produce some milliwatt output from the other winding.Is milliwatt output the purpose of a tesla coil?
probably close enough.The "primary" and "secondary" labels i would switch. Primary is incoming V. (9V in this case) The secondary, in this case will be the approximately1000V output.
Youre calling the primary the secondary, and vice versa. Your schematic indicates a 12v battery, but the build uses a 9v. Other than that, cool project.
I'd probably put a pair of the mini vice grips on it. Or use a hole saw to cut a disc out of wood or plastic. Force this over the post so it grabs it, or heat plastic disc before forcing it over the post, or epoxy it.
I've just missed deadlines lately for contests, and just plain don't get my hobby projects done when hotter priorities happen (sigh).
sometimes I put together an ible that I kno has shortcomings, but I publish in a hurry. Is it preferable when I hav time to scrap the ible and start over? Or to re edit
I look forward to seeing what happens. Sometimes it's better (quicker?) to try somethin and see what goes wrong.
if u hav a snorkel and air pump, then minor leaks around the axles may not matter. As long as the air pump can keep up with leaks.
I know someone who used leyden jars in the primary circuit of a tesla coil. So, IIRC, they were charged by a neon sign transformer. Be careful with that stuff, tho.
thx Sam. Yes those are the 2
Rechargable C-Cells from De...
PVC Pipe Battery Holder
van de Graf is basically static electric automated. U can also just charge it with static electric sparks. But it might take 100 sparks to charge it.
van de Graf generator would b ideal.
The electronics need to be sealed against water. The motors are not entirely critical. Yes water will shorten their useful life, but not as much as you might expect. Meanwhile, You've got an awesome toy nobody else has. Your antenna could be quite long to break the surface if need be. Reception may be better if the wet part is insulated.
I'm gonna play devils advocate with ya soon, du35m. When I've a real computer in front o me.
I'd do an image search on what has been done in the real world. For inspiration if nothin else.
If you want realistic results, then, yes. Joints. How much tensile strength does gel have? Bet you could pull an "arm" right off. In the real world, that'll probably take 1000 lbs.
http://www.sciencedirect.com/science/article/pii/S...I Googled ( tensile strength ballistic gel) got nothin much. Compressive strength, yes. And that seems to be mostly there with higher speeds (1000fps, for instance) . But a real body has tensile strength, too.
if I were to build what you want in full scale, I might secure 55 gallon drums along the edge of the veh, with provision to pump air into the barrels for floatation, or flood em.
I assumed you can't afford a real tank, but if you found/ made scale 55 gal drums for floatation, it could look real. And cool.
agreed re: floor level. Hot glue may pull up paint. Try safety pins into the carpet
iirc, poplar is a good approximation for strength of bone. A drawknife is good for roughing out a shape. Belt sander to finish. Nylon is a good sinew. If you want realistic strength and flexibility, tensile strength in joints is a must.
iirc, real tanks just have a snorkel. Not floating, they just drave along the bottom.
it could be a matter of a "dirty" power supply. If V fluctuates from 0V to 7V at 60htz, with an effective avg of 5, maybe that's not good enough. Add a capacitor or battery.
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