In the following drill bit chart are the typical fractional sizes this kind of set would include. Say, for example, a typical 29-piece set. One that could serve any of the above mentioned disciplines well. Various bit types exist for a wide variety of applications, and in particular what material you’re drilling into.įor the sake of simplicity, let’s look at a basic multi-purpose set. Using our drill chart that follows below, you’ll get an idea of just how many sizes there are! (And much more when you factor in different types of bits). In fact, most nice sets include anywhere from 12-30 pieces of standard drill bit sizes. Thankfully, we can narrow it down a a lot to some standard sized holes for bolts and screws as well as for bits.įor example, let’s look at the most common applications:Įveryday home repair and construction projects, hobby, marine, farming, woodworking, metal working, aircraft, arts and crafts, commercial building projects, machinery and more.įor each particular application area, you’re going to just see a few dozen or so relevant drill bit sizes. Well, if you base your answer on how many size holes there are in the world, then there would be infinite amount of bits! If you were to look at the most all encompassing collection of multi-purpose, twist-type bits, how many drill bit sizes would there be? How Many Drill Bit Sizes Are There?įirst things first. Scroll down if you just need a quick reference using our drill chart. We’ll discuss these in detail in this article. Many times, we’re just trying to find out the alternative sizes available if you’re working with metric sizes (measured in millimeters) versus standard or empirical values (our familiar fractional inch variety).Ĭheck out our full drill charts below for a quick reference to find all drill size equivalents.įinally, getting the right size drill bit set in your greater tool “chest” will arm you for the various types of projects you’re doing. ![]() It may not be totally evident at first glance. Knowing just what size you need to use for the hole you’re making is also important. They are designed for use in high tech drill presses.Having the right drill bit sizes on hand for your particular repair or building task is essential for any seasoned carpenter or weekend-DIY’er. ![]() They will break very easily if used by hand. While I'm at it, don't buy the bits with the large shanks. The minimal projection eliminates most of the flex. Drill bits break because they have been flexed. #79s are far less prone to breaking than #80s and the size difference of the hole is barely perceptable.Īnother trick to prevent breakage is to chuck the drill bit so only enough of the bit is sticking out of the chuck to drill through your material. I would suggest buying #79s instead of #80s and then work up from there. My approach is to buy several of the same size bits in a range of sizes. Yes, you can just go to the next size up, that is until it breaks too. When the one you need breaks, you have a problem. Tiny drill bits will eventually break no matter how careful you are with them. The problem with a set is that you only have one of each size. I'd like to suggest a different approach instead of buying numbered drill dits in a set. You might have to drill the holes a bit larger to allow for the paint. Even then you will probably get a bit of paint damage but it is much easier to touch up the paint in the middle of the grab than trying to get the paint even where the grabs meet the body(if you paint them after installation). If you are using tweezers to install the grabs, wrap the tips in masking tape. The paint has to be fully cured before installation, i.e. ![]() Most grabs have enough spare length that they can be stuck into a piece of foam. They will break if you look at them funny.ĭo you need to paint your grab irons a different colour than the body? If so, you will get better finished results by painting the grabs before installation. It doesn't matter if the drill is slightly oversize (emphasis on 'slightly' Lion ) because the gap will be filled by the CA. If you have a set of calipers that's great but not essential. Since not all grab irons are the same size, the easiest way to choose a drill would be to hold the end of a grab up to the shanks on a few drills and see what is fairly close. With all due respect to your considerable modelling accomplishments, 1/16" is waaayyyyyy too big!! Filling the hole with body putty after the painting is done is totally counterproductive and quite unnecessary.
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