PARABOLIC MIRROR PARABOLOID HOMEMADE SOLAR CONCENTRATOR P2 DIY DO IT YOURSELF
Thursday, June 18, 2009 11:29Posted in category DIY
THIS IS PART 2 OF THE PARABOLIC MIRROR
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strasheep says:
June 18th, 2009 at 11:29 AM
you need a parabolic cross section.. not sure if a wok is the right shape. you could use a satellite dish
Natalyfanfred says:
June 18th, 2009 at 11:29 AM
sorry this scared me..
Way back in 1894, a little girl named Madeline Crothe was skipping through the woods when a mysterious man in black snatched her. He brought her to his house, tourtered her, and starved her to death. Send this to 6 videos in the next 30 min. and you will be safe, but if you don’t… at approximately 1: 34 tonight you will wake up to see an aneorexic child holding a bloodied up knife and she will kill you” less sorry this scares
stopcraponutube says:
June 18th, 2009 at 11:29 AM
Would it be cheaper to use a wok?
Procrastinatathor says:
June 18th, 2009 at 11:29 AM
You could also lay the dish on the original water tank, so it can be held in place firmly while you mess with it.
Procrastinatathor says:
June 18th, 2009 at 11:29 AM
Since you first have a concrete mould, it could be interesting to create a real metallic mirror – if this is possible for you – by spraying molten metal (I’m not sure about this part). What I mean is actually using the mirror making techniques used by the folks creating telescopes mirror.
Spraying an even layer of reflective, molten metal, while having it spinned (to be sure it’s even) could be cool, however.
danben72 says:
June 18th, 2009 at 11:29 AM
Its easier to follow your lectures if you could give them easier names
e.g. DIY Parabolic Mirror Part 1 of 2
Thanks anyway!
kilnj69 says:
June 18th, 2009 at 11:29 AM
To finish the edges get some 1/4 inch clear or black flexible tubing (polly pipe) cut a slit down the length, open it up a little and slip it over the edge all the way round. BTW I love your videos
Kind Regards, Justin Kilner
seancap08 says:
June 18th, 2009 at 11:29 AM
Nice Stuff in this project. Did not know that a water heater will yield an accurate dish. Redrock energy once posted a method with Axle Grease to adhere common mylar to any old dish. Its cheap and it gets you out of proprietary materials. Easy to rub the air bubbles out. How hot is this dish?
sickbuffalo says:
June 18th, 2009 at 11:29 AM
How did you design and make the former from which you made the fibreglass dish. It cant be easy to get a good parabolic dish
daddyoca69 says:
June 18th, 2009 at 11:29 AM
Car door trim modling should work… cheap easy to get and comes in black or chrome
windowtwkr says:
June 18th, 2009 at 11:29 AM
I would trim for car doors for edge of mirror, it has metal flange in side of rubber to grip the edge of rim, and you can get it pretty cheap!!
Good job Dan
GREENPOWERSCIENCE says:
June 18th, 2009 at 11:29 AM
Thank you for the idea on the foam rubber gasket for the edge , I will see what I can find. Take care.
swizzlecheeks says:
June 18th, 2009 at 11:29 AM
I worked at a yacht company up in Michigan until I was laid off. You may have heard of our sister company, Pursuit Boats. Anyways, to trim the edge I’d suggest a foam rubber gasket material. It looks like black rubber tubing with a slit along one side. It slips onto the edge. Its sold with marine goods and should be available at larger hardware stores.
swizzlecheeks says:
June 18th, 2009 at 11:29 AM
In Michigan we own at least two things,especially, if we have kids. Snow shovels, and sleds. LOL.
Actually, I don’t own the saucer shaped type sled. I remember as a kid them being made from metal. Nowadays they’re made from some type of plastics. I’ll try and take a look the next time I’m at a department store to check the overall shape and physical qualities. If your friends say they don’t work well, then I’d have to generally agree.
GREENPOWERSCIENCE says:
June 18th, 2009 at 11:29 AM
It would be close. Three people that I know of tried it and got poor results. The shape was wrong and the surface was bad. Living in Florida, I have never seen one up close. Do you own one?
swizzlecheeks says:
June 18th, 2009 at 11:29 AM
Hey,
What about using the kid’s sledding Snow Discs?
Seems like it’d be the correct shape.
ms00camaro says:
June 18th, 2009 at 11:29 AM
where did you get your reflective metal sheets
ft1113 says:
June 18th, 2009 at 11:29 AM
It’s great, but it is only a mirror, you must build a system that follows the sun. How are you planning to make that?
emszabi says:
June 18th, 2009 at 11:29 AM
Sooo expensive. Much cheaper to buy a satellite dish for 10-20 bucks. Thats larger, has smoother surface, and you got it for less than the price of the epoxy used.
treborly says:
June 18th, 2009 at 11:29 AM
and what would this true mirror spray be called?, keep leaving me hanghing man.
OleTimeMachinest says:
June 18th, 2009 at 11:29 AM
I’ve tried the small cut mirrored glass method and it becomes extremely heavy and time consuming.
You also lose a lot of dead reflective space between squares.
pipersmitty87 says:
June 18th, 2009 at 11:29 AM
You really have got plenty of people’s wheels turning. I’m making my solar grill asap.
emilymoeyo says:
June 18th, 2009 at 11:29 AM
can you please tell me where you got that reflective metal sheet stuff? i’d appreciate it. price range..? ehh..
bsvwrabit says:
June 18th, 2009 at 11:29 AM
If that mylar is anything like some window tent try laying it on back side of disk and hitting it with a heat gun (lightly) it should shrink a little and form to shape.
rpm5252gt says:
June 18th, 2009 at 11:29 AM
Could you share a link to the company you got your reflective sheets from? My engineering senior design group is considering using your film and Im looking for data. Also why exactly didnt you use less expensive mylar with some adhesive spray? Is it just difficult to get out the wrinkles?