找到制作大门所需的工具和材料。 确保栅栏可以支撑门的重量。 如果有必要，栅栏的柱子要固定并且是垂直的。 测量框架。

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Aside from a fence in need of a gate, you'll need a few common hand-held carpentry tools to get started making your gate. It's likely you'll need:  Screwdriver Power drill Compound miter saw Carpenter's level Jigsaw, for cutting a decorative profile 3-inch stainless steel coated deck screws, for putting the box frame together 1 ¼ or 1 ⅝ stainless steel or coated deck screws, for planking Hinges The size of the gate should not be greater than 4' (1.22 m) in width. If it is wider, you must make and hang two gates, which will meet in the middle. Measure the entry at the top and bottom as they can easily be different. Build the gate to be square based on the narrower measure. Take diagonal measurements to check for squareness. You need to make sure that hanging the gate won't pull the posts to one side. The way you anchor the post will depend on the size of the fence, but in general, you need to make sure the post doesn't wiggle with weight. If it can be easily moved, the gate will sag. You should also check and see that the post is level, straight up and down. Ideally, a 4-foot (1.22 m) tall gate needs a 5" x 5" (12.7cm x 12.7 cm) redwood post. A 6-foot (1.83 m) tall gate requires a 6" x 6" (15.3 cm x 15.3 m) post. Post length should be at least 1/3rd longer than the planned height of gate. The hole that the post  will occupy should be at least 6” deeper than post will be buried. Post should be buried at least 1/3 but preferably 1/2 of its length and hole should be 3 x as wide as post. Concrete is best for filling hole but gravel or tightly packed earth may have to do. It is best to seal the end of post being buried using old motor oil, water proofing agent, bronzing (lightly charring post) or exterior paint. Giving buried end of post some form of water proofing protection will greatly extend life of post. Post should also be (proved) before using. Proving is allowing post to lay exposed to elements for at least 4 or more days to assure that it won't warp or twist (the longer the better, 2 weeks is best). This...