First, the yin and yang, yin and yang corner wall moldings practice first batch layer of ash at the grassroots level, and then playing the line, so playing the line to see clearly point. Clean gray knife Yang angle and the surrounding bumps. Not clean, then playing the line will encounter obstacles, is not playing. Two, two, yin and yang angle elastic cord. In every corner of yin and yang with vertical lines vertical lines placed bombs fall line treatment, and yin and yang angle vertical line as a reference to 500mm were placed on both sides of a vertical line parallel to the yin and yang angle parallel lines, this line is defined as the "yin and yang angle standard line." Wall putty with plaster on the front sides of the yin and yang within 500mm angle for leveling, leveling with two meters by foot to the vertical direction is detected as the standard error is less than 2mm. Yang angle to 500mm outside both sides with plaster or putty find Junpei. 3, along with putty putty brush ink line straight to the corner, to be dry, open the full gray, with two meters by foot L-shaped aluminum one pull one, from one side parallel to the Yin Yin corner angle, when pushed to the corner gently twitching back and forth parallel scraped look after, overcast angle so as not to deal with a small bend. After dry, check Yang angle is qualified, according to the vertical line inspection yin and yang corner wall flatness error within 5mm wall lining with leveling, error than 5mm must be leveled with plaster. 4, Yang Yang angle corner handle anti-bump protruding because it is relatively easy to be hit, causing damage to the wall or furniture or even injury. To prevent this from happening, you can take measures to prevent the processing of positive angle bump. Alternative approach has the sun angle make smooth handling, use sandpaper to polish into a small arc here; or you can placement Corner bar to be protected. Two, wall moldings yin and yang approach wall decoration materials are paint, wallpaper, tiles of three, in the construction process, will encounter problems wall angle of yin and yang, yin and yang corner wall treatment methods described below. 1, Yang angle wall paint brush paint Yang angle must be straight, to ensure straight, do negative angle, be sure to play the line, visually identify the most protruding wall place when playing the line, hold down Two pop a black line, and then 1.5-2 meters angle aluminum model according to pop straight lines scratch; Yang angle to keep straight, usually by scraping together with 2 m long aluminum, the other side with the wiper scratch, in order to ensure durable sun angle, scraping the available white cement and gypsum powder. 2, wall papering at the corner of yin and yang wallpaper, wall angle of yin and yang of the most prone to problems. When Yang corner stickers, wallpaper scraper accidentally posted on the wall and across the convex corner, hand stroked the top down in the convex corner straight folds, and then use a utility knife to cut along the vertical line wallpaper, plus glue stick better, and with the pressure roller to flatten. When Yin corner stickers, wallpaper from the last one to get to the center of the concave wall smooth, scraping down with a scraper stick to the walls of the epitaxial part and put glue on the blade clean and cover posted a good wallpaper. 3, wall tile in the corner of yin and yang tiling, wall yin and yang angle process is the hardest. The more common approach is to use mosaic tile itself, the method is often the edge tile cutting machine or hand down a 45-degree angle, edge down a little more to stay some time, hitting out more rounded corners. In the sticky time to pay attention to find the level of the middle of the two corners are aligned. Four, three, Corner bar Corner bar decoration installation Installation methods. When the angle bars mounted on the column and wall, generally Corner bar anchor leg on a nail by nail base, or temporarily fixed with mortar class, each Sarkozy faces all the same, was fixed after adjustment straight vertical shape. Corner office decoration strip installation methods vary and different substrates, as follows 1, when installed on concrete and concrete block, at intervals of about 300-450mm with nails or mortar anchors feet. 2, in the mesh metal plate installation, plastering the metal mesh panels, fully hardened after installation and then dry hard mortar. 3, when installed on a wooden structure, installed with nails or staples. Renovation construction Corner bar Installation Notes 1, to promote the anhydrous gypsum plaster hardened, often mixed with alum weak acid, weak acid Corner strip material mostly not eroded, but the legs are made of galvanized steel anchor system due to the thickness of the plating layer is not enough, so the plaster works completed soon, there are examples of yellow rust generated from the surrounding Corner bar anchors the foot. 2, mixing gypsum ash is generally neutral, but there was and acidic PH 8 may think this is so rusty mortar window frames, Shanghai office decoration company Di remind smear this decorative material, pay attention to anti-rust treatment Corner bar anchor leg, and the other brass after plastering construction finished, also tend to produce a small amount of patina, rubbed patina not only takes time and sometimes also often contaminated surface decoration. Galvanized steel is preferable to oil-based paint or plastic coatings decoration, preferably stainless steel products.