ArtsAutosBooksBusinessEducationEntertainmentFamilyFashionFoodGamesGenderHealthHolidaysHomeHubPagesPersonal FinancePetsPoliticsReligionSportsTechnologyTravel

How to Make a Thin Film Mirror Parabolic Reflector Dish

Updated on February 26, 2012


Parabolic reflectors are an efficient way of creating a high temperature focused beam of light to start a fire or to take a focused light source and distribute it over a large area (this is the way that headlights on a car work). The dish we will be making was conceived to use at a camp site as a way to both light and direct the heat from a campfire.


There are two methods that can be used to create a proper parabolic reflector. Which one you use will depend on the materials that are readily available in your area.


Method One: Using a Satellite Dish


Things You'll Need


  • 15-inch satellite dish
  • Socket set and wrenches
  • Scrub brush
  • Cleaning solution
  • Rubbing alcohol
  • Towel
  • Chrome spray paint
  • 2-inch metallic mirror tape
  • Scissors


Step 1


Obtain a 15-inch satellite dish. Remove all of the components including the armature and mounting brackets with the appropriate socket or wrench.


Step 2


Clean the interior curved surface of the satellite's parabolic dish with a scrub brush and cleaning solution. Use rubbing alcohol if there are areas that do not come clean with the cleaning solution. Dry the dish with a towel.


Step 3


Paint the interior curve of the parabolic dish with chrome spray paint. Cover the entire surface so there are not dead spots on the dish. This may take two or three coats of paint.


Step 4


Apply 2-inch metallic mirror tape to the dish once the paint has dried. Lay the first piece of tape directly down the center of the interior curve, smoothing it out with your thumb as you go. Apply a second piece of tape directly next to the first. Continue this process until the entire dish is covered in mirror tape.


Step 5


Trim any overhanging tape with a pair of sharp scissors. This completes the ready-made parabolic reflector.



Method Two: Construct from Scratch


Things You’ll Need


  • 70 gallon water tank
  • Jigsaw
  • Duct tape
  • 5-gallon bucket
  • Portland cement mix
  • Aggregate
  • Cordless Drill
  • Paint stirring attachment
  • 1-gallon bucket
  • Paraffin wax spray
  • Buffer with polishing pad
  • Paraffin wax block or large candle
  • Epoxy resin
  • Paintbrush
  • 4-foot-square fiberglass repair sheet
  • 2-inch-wide solar reflector tape
  • 2-inch-wide thin film mirror tape



Step 1


Obtain a 70-gallon water storage tank with a concave bottom. Cut the barrel in half with a jigsaw so the base remains intact. Flip it over so the concave base is facing up.


Step 2


Extend the lip on the edge of the base of the tank with duct tape. This will be used to help remove the fiberglass parabolic form after it has dried.


Step 3


Fill a 5-gallon bucket halfway with Portland cement mix and water. Add in two to three handfuls of aggregate and mix the cement with a cordless drill equipped with a paint stirring attachment.


Step 4


Scoop out cement mix with a 1-gallon bucket and pour it into the concave base of the water tank. Continue filling the tank until the cement reaches the edge of the original rim (as opposed to the extended duct tape rim). Let dry for 12 to 24 hours.


Step 5


Remove the concrete form from the tank by pushing it over on its side and using the duct tape edge to help you pull the concrete from the tank. If the concrete remains stuck in the tank you may have to use the jigsaw to cut the edge of the tank to loosen the form.


Step 6


Place the form, flat side down, in a well ventilated area. Spray a generous layer of paraffin on the concrete. The surface will change color from a light to dark grey.


Step 7


Buff the concrete with a high speed buffer equipped with a polishing pad.


Step 8


Crumble the edge of a paraffin block or candle with your finger and spread the wax over the surface of the concrete. Buff it in the same manner as before. This wax will make the fiberglass reflector release from the concrete mold.


Step 9


Mix a batch of epoxy resin and apply it to the waxed concrete with a paintbrush.


Step 10


Tear small pieces off from the fiberglass repair sheet and press them down into the resin. Cover the entire surface of the concrete with one layer of fiberglass.


Step 11


Apply a second layer of resin on top of the fiberglass. Tear and place a second layer of fiberglass on top of the resin. Repeat this step until you have four layers of fiberglass. Allow the fiberglass to dry for 12 hours.


Step 12


Release the fiberglass mold from the concrete form. Trim the edges of the fiberglass reflector with a jigsaw.


Step 13


Buff the interior curve of the fiberglass with the buffer equipped with a polishing pad. This will remove any wax or concrete debris from the interior of the parabolic form.


Step 14


Apply 2-inch solar reflector tape to the interior curve of the fiberglass reflector. Lay the first piece of tape directly down the center of the interior curve, smoothing it out with your thumb as you go. Apply a second piece of tape directly next to the first. Continue this process until the entire dish is covered in reflector tape.


Step 15


Apply 2-inch thin-film mirror tape to the reflector-tape-covered dish. Lay the first piece of tape directly down the center of the interior curve the same as with the first tape layer. Smooth it out with your thumb as you go. Apply a second piece of tape directly next to the first. Continue this process until the entire dish is covered in thin film mirror tape.


Step 16


Trim the excess tape from the edge of the parabolic dish with sharp scissors.



Tips and Warnings


Satellite dishes can often be found by checking local recycling networks and websites or by placing an ad in the local paper saying you'll remove satellite dishes for free.



Always use safety equipment including gloves, goggles and respirators when working with power tools and fiberglass.


Comments

    0 of 8192 characters used
    Post Comment

    No comments yet.

    working

    This website uses cookies

    As a user in the EEA, your approval is needed on a few things. To provide a better website experience, hubpages.com uses cookies (and other similar technologies) and may collect, process, and share personal data. Please choose which areas of our service you consent to our doing so.

    For more information on managing or withdrawing consents and how we handle data, visit our Privacy Policy at: https://hubpages.com/privacy-policy#gdpr

    Show Details
    Necessary
    HubPages Device IDThis is used to identify particular browsers or devices when the access the service, and is used for security reasons.
    LoginThis is necessary to sign in to the HubPages Service.
    Google RecaptchaThis is used to prevent bots and spam. (Privacy Policy)
    AkismetThis is used to detect comment spam. (Privacy Policy)
    HubPages Google AnalyticsThis is used to provide data on traffic to our website, all personally identifyable data is anonymized. (Privacy Policy)
    HubPages Traffic PixelThis is used to collect data on traffic to articles and other pages on our site. Unless you are signed in to a HubPages account, all personally identifiable information is anonymized.
    Amazon Web ServicesThis is a cloud services platform that we used to host our service. (Privacy Policy)
    CloudflareThis is a cloud CDN service that we use to efficiently deliver files required for our service to operate such as javascript, cascading style sheets, images, and videos. (Privacy Policy)
    Google Hosted LibrariesJavascript software libraries such as jQuery are loaded at endpoints on the googleapis.com or gstatic.com domains, for performance and efficiency reasons. (Privacy Policy)
    Features
    Google Custom SearchThis is feature allows you to search the site. (Privacy Policy)
    Google MapsSome articles have Google Maps embedded in them. (Privacy Policy)
    Google ChartsThis is used to display charts and graphs on articles and the author center. (Privacy Policy)
    Google AdSense Host APIThis service allows you to sign up for or associate a Google AdSense account with HubPages, so that you can earn money from ads on your articles. No data is shared unless you engage with this feature. (Privacy Policy)
    Google YouTubeSome articles have YouTube videos embedded in them. (Privacy Policy)
    VimeoSome articles have Vimeo videos embedded in them. (Privacy Policy)
    PaypalThis is used for a registered author who enrolls in the HubPages Earnings program and requests to be paid via PayPal. No data is shared with Paypal unless you engage with this feature. (Privacy Policy)
    Facebook LoginYou can use this to streamline signing up for, or signing in to your Hubpages account. No data is shared with Facebook unless you engage with this feature. (Privacy Policy)
    MavenThis supports the Maven widget and search functionality. (Privacy Policy)
    Marketing
    Google AdSenseThis is an ad network. (Privacy Policy)
    Google DoubleClickGoogle provides ad serving technology and runs an ad network. (Privacy Policy)
    Index ExchangeThis is an ad network. (Privacy Policy)
    SovrnThis is an ad network. (Privacy Policy)
    Facebook AdsThis is an ad network. (Privacy Policy)
    Amazon Unified Ad MarketplaceThis is an ad network. (Privacy Policy)
    AppNexusThis is an ad network. (Privacy Policy)
    OpenxThis is an ad network. (Privacy Policy)
    Rubicon ProjectThis is an ad network. (Privacy Policy)
    TripleLiftThis is an ad network. (Privacy Policy)
    Say MediaWe partner with Say Media to deliver ad campaigns on our sites. (Privacy Policy)
    Remarketing PixelsWe may use remarketing pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to advertise the HubPages Service to people that have visited our sites.
    Conversion Tracking PixelsWe may use conversion tracking pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to identify when an advertisement has successfully resulted in the desired action, such as signing up for the HubPages Service or publishing an article on the HubPages Service.
    Statistics
    Author Google AnalyticsThis is used to provide traffic data and reports to the authors of articles on the HubPages Service. (Privacy Policy)
    ComscoreComScore is a media measurement and analytics company providing marketing data and analytics to enterprises, media and advertising agencies, and publishers. Non-consent will result in ComScore only processing obfuscated personal data. (Privacy Policy)
    Amazon Tracking PixelSome articles display amazon products as part of the Amazon Affiliate program, this pixel provides traffic statistics for those products (Privacy Policy)