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Line up two of the plastic template pieces side by side. Then put a piece of tape at the top and the bottom where their edges meet. Make sure the tape overlaps onto both sides of the template so that it holds them together well. Then, tape the remaining two pieces to each end in the same manner. All four of the plastic pieces should be taped together. You can glue the pieces together instead of taping them. However, this will likely take longer because you have to hold the pieces together until they dry. Stand up the taped pieces on the bottom edge. Bend the pieces where you have applied the tape to create corners or creases at each edge. Then tape the two open ends together to close the shape. This is your hologram projector. It should now resemble a pyramid with a flat top. A single fish swimming or a flower moving back and forth works fine. Use a screensaver image or a video. Whatever image you display is the image that is going to be projected into a hologram. With the moving image still displayed on your smartphone, set your screen projector with the short end -- the 1-centimeter end-- down on your smartphone. The side facing up at you should be the 6-centimeter end, and it should now have the shape of the rhombus. If your image on your smartphone is still moving, you should now see a 3D hologram of it projected through your CD case projector..

summary: Tape or glue the templates together. Shape the figure. Display a simple video or moving image on your smartphone. Place your hologram projector on your smartphone screen.

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You don't need to use the Chrome web store or download sites. Visit siteadvisor.com in Chrome to load the add-on directly. The download is pretty small, and should only take a minute or so. You will be prompted to confirm that you want to run the program. The process will only take a few moments. This will prompt you to enable the new extension. Chrome needs this additional prompt for security reasons. Once you enable it, you'll be able to see SiteAdvisor results. This is McAfee's custom search engine that filters out unsafe sites. It will become Chrome's default search engine. Use any search engine to start seeing SiteAdvisor results. Hover over the SiteAdvisor icon next to a search result for details. The icon color indicates the threat: Green - This site is safe to browse. Yellow - This site has some risk, such as potentially malicious links. Red - This site has serious security problems, and likely has malicious content. "?" - This site has not been rated by SiteAdvisor. Select "View Site Report" to see a full report from SiteAdvisor about the site you are currently visiting.

summary: Visit the SiteAdvisor website in Chrome. Click the "Free Download" button. Run the downloaded setup file. Click "Install" to begin installing the add-on. Restart Chrome. Click "Enable extension". Decide if you want to enable "Secure Search". Perform a web search to see SiteAdvisor results. Click the SiteAdvisor button in the URL bar to see a site report.

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This is much more expensive, but significantly lowers the number of steps needed to sound-proof a room. You install like normal, and it is specially made to absorb sounds and frequencies. Dry blown insulation requires that you attach a netting to the exposed wall, which catches the cellulose and holds it on the wall. It takes a bit more time, but it is doable by yourself without expensive equipment. All you need is a standard hopper. . Purchase it in bulk, then cut it to fit each panel of the wall. Slide it in place and attach to the back of the wall according to the manufacturing instructions. This is much harder to work with, and get right, but it can be cheaper and makes much less of a mess. To use it: Wear a respirator at all times. Seal any electrical boxes with soundproof caulk. Cut your insulation (R-11 fiberglass works well) with a utility knife. Screw backing boards, like 1/2 plywood, to the edges of the wall to provide a base for drywall nails. Attach the resilient channels, long metal bars, horizontally across the wall. Instead of installing the first sheet like normal then proofing and installing the second, simply apply the glue straight to the first sheet. Work in a zig-zag pattern, covering the whole sheet and then install it like normal. Afterward, continue on with the noise-proof caulking. Basically, sound is transmitted through vibrations, so touching walls will vibrate each other more than walls that don't touch. Decoupling is when you separate the walls to prevent sound transmission. Keep in mind that resilient channels are prone to failure, and is not specified by the Steel Stud Manufacturers Association, so be careful. You could also: Float the walls or floor Isolating studs with joist gasket tape. STC is used to tell you how good a material is at soundproofing. A higher STC means it will do much better at soundproofing. Aim for materials with an STC between 30-40.
summary: Consider buying "quiet rock" instead of normal drywall. Try installing the simpler, easier "dry blown" cellulose. Fill the cavity between the studs with a fiberglass or mineral wool insulation instead of damp blown cellulose Apply a single layer of drywall with soundproofing compound. Isolate or float your drywall off of the studs by using resilient channel or sound isolation clips. Understand Sound Transmission Class (STC) ratings when choosing construction materials.