You will likely be using the faster setting for most tasks, and the slower setting if you are drilling large/deep holes in wood with a twist bit. Setting 2 is high speed and low torque, which is good for drilling holes. Setting 1 is low speed and high torque, which is ideal for uses such as driving screws into the material. Using a battery that isn't charged enough can lead to slower, ineffective drilling.Ĭheck the speed settings on the drill - the big switch on the top. Make sure the drill has a charged battery in it. Depending on what kind of saw the bit is made of, hole saw bits can be used on wood or metal. Hole saw bits (farthest left) are capable of drilling larger holes than spade bits, but cannot make partial cuts. Spade bits (second from left) can more easily bore large holes into wood than a twist drill bit, and the holes can either go through the material partially or completely. Forstner bits can also be used to drill angled holes into the material. This is important to consider once you start using drill bits greater than or equal to a quarter inch.įorstner bits (middle) are capable of drilling large holes in wood and can go either partially or completely through the material.
When you are planning on drilling a large hole with a twist drill bit, make sure to start with a smaller drill bit and widen the hole in stages starting with a large bit can create a sloppy hole, make the bit more easily walk, and it might take very long to get through the material. Twist drill bits (second from the right) are the most frequently used and are generally used for cutting smaller, more standard holes into the material, including wood and metal. Screwdriver bits (farthest right) are useful when using a hand drill to drive screws they do not drill holes of any kind. If you know the size of the bolt, you can use this chart. If you plan on tapping the hole that you are drilling, that is, threading it so that you can screw a bolt in, look up the proper pilot hole sizes for the bolt you plan on threading. The diameter of the drill bit for the pilot hole should be the same as the diameter of your screw without the threads. When doing work with screws, pilot holes are very important to prevent the wood from splitting. These anchors are used in hard, rocky or sandy bottoms.Prior to selecting a drill bit, it is very important to determine the size and depth of the hole you are drilling. Pyramid anchors have a shorter anchor shaft which helps to minimize the potential for chain wrap and also makes then useful in more shallow water settings. They are comparable in terms of holding strength, but their smaller size pyramid shape helps them penetrate the bottom more rapidly. Pyramid anchors are essentially a redesigned version of a mushroom anchor. Pyramid Anchors: As the name implies, these one piece cast iron anchors are shaped like a pyramid. This can reduce the scope of the mooring. This is commonly referred to as “spin out.” Additionally, mushroom anchors run the risk of having the chain wrap around the shaft of the anchor when not properly set. In certain conditions, mushroom anchors that are not properly embedded in the bottom can dislodge and lose holding power. Once buried, a mushroom mooring is typically thought to be able to hold up to 10 times its weight. They work best in mud, sand, silt or other soft ocean bottoms where they can be easily buried. Mushroom Anchors: Mushroom anchors get their name from their shape, which looks like an upside down mushroom.
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