Twist drills are usually available in sizes 0.8-12 mm plus. They are designed for drilling relatively small holes, they sometimes tend to clog quickly especially when the wood is 'green' so when drilling deep holes (especially in hardwood) the bits should be withdrawn regularly to remove the waste.

At first, we tried lots of things the Internet told us to do. The awkward, overly complex Coital Alignment Technique. (“If you do this right, expect to feel like you did 1,000 sit-ups the next day,” Tim Ferriss says about this position in his book The 4-Hour Body. “That doesn’t sound like the position for me,” my boyfriend said with a wince.) Cowgirl position, so I could control the exact angle of his penis against my G-spot. (“My hips and knees hurt, and I’m sorry I keep dripping sweat on you,” I wheezed after 30 fruitless minutes.)

Dr. Chee Ann recommended inserting one finger deeply into the vagina to find the A-spot; I find two fingers target my spot more effectively. Toys can also work wonderfully: They have to be long enough to reach the spot (5 inches or longer, depending on your vagina’s depth), slim enough to slide past the cervix without bumping it, and gently curved upward at the tip, like a come-hither-ing finger.

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Usually referred to as twist drills, twist bits are probably the most common drilling tools used by the handyman with either a hand or electric drill. The front edges cut the material and the spirals along the length remove the debris from the hole and tend to keep the bit straight.

The larger bits require a fairly powerful drill to bore deep holes. The bits cause a lot of splintering as they break out the back of the workpiece - using a sacrificial backing board will reduce this. Flat wood bits are not really suitable for enlarging an existing hole.

Countersinks are available with fitted handles so that they can be used by hand twisting, often easier than changing the bit in the drill when only a relatively few holes need countersinking.

Titanium nitride bits cannot be sharpened without destroying the coating (although if the drill needs sharpening, the coating will probably have already been destroyed). Forming the correct angle at the tip is important for efficient cutting.

Though it makes up our culture’s quintessential image of sexual success, orgasm during intercourse had thus far evaded me. Penis-in-vagina sex didn’t provide the direct clitoral stimulation that I (and most other women) need to reach orgasm. Even when I added clit stim into the mix, I found my boyfriend’s penis more of a distraction than an enhancement. I had to actively tune out his thrusting and seriously focus to get anywhere—and even that hadn’t gotten me all the way to orgasm.

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Sharpening - a bit fiddly as it has to be done by hand. Sharpen the point and spurs with a fine file or edge of a fine grindstone; the angle between the point and spurs should be 90°.

Twist bits are also available coated with Titanium nitride (TiN), these are easily identified by the gold like colour. This coating increases the hardness of the bit and adds a self-lubricating property. The coating is only really effective when metal is being drilled, it has little effect when working with other materials.

In Naomi Wolf’s book Vagina, she explains that each woman’s pelvic nerve branches in unique ways and in different places, which is why some women reach orgasm more easily from clitoral stimulation, say, while others go gaga for G-spot attention. While the A-spot is crucial for me and plenty of others, there will also be many for whom touching this spot does nothing or feels mildly pleasant but not orgasmic. All vaginal configurations are valid and lovely; it’s just good to be aware of as many options for pleasure as possible so you don’t feel “broken” like I did when I thought I’d never be able to come from PIV sex.

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A bit for drilling ceramic tiles and glass, it has a ground tungsten carbide tip. They can be used with a hand drill, but are best used in a variable speed power drill on a slow speed. When drilling glass, some form of lubricant (i.e. turpentine or white spirit) should be used to keep the tip cool.

Intended for power drill use only, the centre point locates the bit and the flat steel on either side cuts away the timber. These bits are used to drill fairly large holes and they give a flat bottomed hole (with a central point) so are ideal where the head of a screw/bolt needs to be recessed into the timber - always use this bit before drilling the clearance hole for the bolt.

Learning how to sharpen drill bits is cost effective, it better to keep a bit sharp by occasional sharpening rather than waiting until it becomes really blunt. A sharp bit cuts better with less effort whether used in a power or hand drill. A sharp bit will also give a cleaner hole.

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Like the Hole Saw above, these combination saws can cut large holes but they consist of a number of different sized round saw blades, usually ranging from about 25 to 62mm in diameter. Normally the blade are secures by a radial screw in the 'head', all blades other than the desired sized being removed before the screw is inserted to secure the required diameter blade. Best used in a power drill at low speed as the blade saws it's way through the material.

I don’t remember the exact moment things shifted for me. I just know that little by little, penetration began to feel good. It seemed to happen most often when my boyfriend was deep inside me, “buried to the hilt,” as flowery erotica stories tend to put it. He must have noticed my enthusiasm because he began penetrating me that way all the time. And then I started orgasming during intercourse. Hell, I started craving intercourse—something that was, for me, unprecedented.

I still sometimes feel weird about asking partners for what I need—“faster,” “harder,” and above all, “deeper!”—but at least now I know what consistently works for me. While it’s sometimes an adjustment for a new beau to learn to please my A-spot when he’s used to focusing on partners’ G-spots, I don’t think they mind my unusual pleasure map at all. Especially once they’ve seen what it does for me.

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These combination bits are quite clever, they drill the clearance hole and countersinks it all in one stroke. Can be used in a power drill or some routers. Different bits are required for different size of clearance holes and they are probably not cost effective unless a large number of a given hole size need to be drilled and countersunk.

Many jobs around the house require a hole of some kind to be drilled - whether it is putting up a shelf, building a cabinet or hanging a light fitting.

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Used to form holes with a flat bottom, such as for kitchen cupboard hinges. Best used in a power drill held in a drill stand as there's little in the way of a central point. If used freehand, the positioning is difficult to control as there is no central pilot bit.

The A-spot can, of course, also be stimulated during sex. Though it’s usually located 5 to 6 inches inside, shorter penises can reach it too, if the receiving partner’s knees are pulled up to shorten the vagina. As with G-spot stimulation, the penis should be aimed toward the front wall, but inserted extra deep to access the A-spot. Having never had my own penis, I asked a partner to describe how he sleuths out my deep spot with his. He told me, “It's just a matter of getting my butt closer to the floor so the dick angles up and back.” While this might sound like penile contortionism, it’s not as difficult as it appears.

Though I’m sure women had known about it for millennia, the A-spot was officially “discovered” by Malaysian physician Chua Chee Ann, M.D., in 1997. In a self-funded study, he administered “gentle repeated stroking of the inner half of the anterior vaginal wall” to 271 women and noted how their vaginas responded: 77.5 percent of participants experienced “copious” or “appreciable” vaginal lubrication from this technique, and a surprising 39.1 percent reached orgasm, according to Dr. Chee Ann’s paper.

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There are two distinct ways to cut materials when milling, conventional (up) milling and climb (down) milling. The difference between these two techniques.

Masonry drills are usually used in a power drill; although they can be used with a lot of effort in a hand brace. Most masonry bits can be used with a hammer action power drill, but always check as the action is quite punishing on the bit and cheaper bits have been known to shatter when subjected to the pounding. Always use a slow rotational speed for drilling into harder materials to avoid overheating the tip, and frequently withdraw the bit to remove dust.

At the dawn of my first serious relationship with a man, I was kind of sexually ambitious. “I want us to bang on top of a grand piano,” I told my boyfriend excitedly. “I want to make out in an alley while it’s raining, I want to try anal, and edging, and making a sex tape. What do you want to do?”

For basic requirements, a set of high-speed steel twist drills and some masonry bits will probably be sufficient for the average handyman. But for more sophisticated jobs/material, others bits will be required - perhaps larger, or designed for a specific material/purpose.

The jackpot we had discovered was the aforementioned anterior fornix, also known as the A-spot, anterior fornix erogenous zone (AFE zone), or “deep spot.” Like the G-spot, it’s located on the front wall of the vagina—the one closest to the belly button—but it’s situated a few inches deeper, right in front of the cervix.

Used for cutting large, fixed, diameter holes in wood or plastic. They will usually cut up to a depth of 18mm - deeper versions are available. Best used in a power drill at low speed as the blade saws it's way through the material.

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Also known as a wood or dowel bit, they have a central point and two raised spurs that help keep the bit drilling straight. The bit cuts timber very fast when used in a power drill and leaves a clean sided hole. They are ideal for drilling holes for dowels as the sides of the holes are clean and parallel. Sizes range from 3 to 10mm. Spur point bits should only be used for drilling wood or some plastics.

As the name suggests, these are designed for drilling into brick, block, stone, quarry tiles or concrete. The cutting tip is often made from tungsten carbide bonded to a spiralled steel shaft. Some masonry drills are described as 'durium tipped', this term refers to a highly durable silicon bronze alloy used instead of tungsten as the cutting point.

Sharpening - difficult because of the hard tungsten carbide and curved cutting edge. With care and patience, a blunt edge can be made good using an oilstone.

Although not a true 'drill', it is used in a power or hand drill to form the conical recess for the heads of countersunk screws. These bits tend to be designed for use on soft materials such as timber and plastics, not metals. When used with a power drill to counter sink an existing hole, the bit tends to 'chatter', leaving a rough surface. Better results be will obtained if the countersink bit is used before the hole is drilled, then take care to ensure that the hole is in the centre of the countersunk depression.

Special care is required when using the smallest sizes since these bits are thin and brittle. Always hold the drill square to the work and apply only light pressure when drilling.

Then we read about an erogenous zone deep within the vagina called the anterior fornix, which I laughed off as not worth seeking because it seemed too close to my cervix, and I already knew I did not enjoy having my cervix pounded. I didn’t know then just how important this spot would later become to my sex life.

With their central point and two spurs, Bullet drills resemble spur point bits, but can be used in metal, wood and plastics. Unlike normal twist drills, the twisted flutes are ground away; making a truer, more accurate bit than normal twist bits. They cut a clean hole and cause little damage when they break through the back of the workpiece.

This is ideal when drilling large-diameter, deep holes in wood or thick man-made boards. Generally an Auger bit should only be used in a hand brace. The bit will cut a clean and deep, flat bottomed holes. The single spur cuts and defines the edge of the hole while the chisel-like cutting edge removes the waste within the previously cut circle. The threaded centre bites into the wood and pulls the bit into the timber. This 'pulling' action means that the bit is really unsuitable for use in a power drill.

While I’d enjoyed G-spot stimulation from toys and fingers on and off for years, the feeling when he hit that deeper spot inside me was totally different. It was unencumbered by the mild “need to pee” sensation that accompanied G-spot play for me. It was a profound, molten-hot, addictive sensation that made me want to yell, “Right there!” and “Don’t stop!” and then melt into a puddle. Where once I had been hesitant or bored during PIV sex, now I was ravenous and engaged. My boyfriend was, unsurprisingly, very pleased by this change.