The mandrel is your middle-man for your hole saw and drill, so they must be compatible. The choices of hole saw kits offering many sizes are usually in red or black colors. The black pieces in the figure are mandrels or arbors. FAQs Q1: What Are the Parts of a Hole Saw Kit Using slightly bigger pilot bits for hardwood or thick metal is necessary. Typically, you’d err on the smaller end for softer surfaces like softwood or drywall. Note that pilot bits are more forgiving as long as you stay within a 1mm range. This means that my pilot bit has to be ¼ in (or 6mm). Looking at this hole saw size chart, a 1-¼ inch rod (31.75mm) will require a hole saw with a size of 1-¾” (approx. On another note, let’s say you were working with wooden rods for furniture.Īn HSS hole saw is great for this job, like Milwaukee’s selection. That same 2 ½-inch pipe is also 63mm in diameter, which means I’d need an 83mm hole saw for the project.įor the pilot, 9.53mm (rounded to 10mm) would work perfectly! Hole Saw Size Chart for Wooden Rods Keep metric conversions simple by using hole saw size charts! To slip my 2 ½-inch pipe through a wooden panel, I found on the chart that I needed a 3 ¼-inch hole saw size. I deemed Bosch bi-metal hole saws perfect for metal pipes and wood materials. Let me walk you through a recent project I had for my bathroom pipes (metal). It’s normal to round to the nearest tenth when it makes sense. Going back to the 2-inch PVC pipe we’re working with, we should use a ¼ inch or 6mm pilot bit.Įxact conversions from imperial to metric units show in many charts. Here’s a hole saw size chart for pilot bits: Hole Saw Diameter (in) In some cases, a pilot bit may not be necessary. This will help you determine the size of the pilot bit needed. But, if you need to, you can measure the hole where the pilot bit fits. Most hole saws are matched with a pilot bit in design and size. Using the proper pilot bit is essential for aligning the hole and supporting stability. While you might think you need to size a pilot bit the same way you size any drill bit, it’s not quite the same thing. Electrical Hole Saw Size Chart (SAE & Metric) Moving to a ¾-inch pipe means you need a 1-1/8-inch, or 28.5-mm, hole saw.Īll the hole saw size charts cover both inches and millimeters. You can convert to metric as needed: 67 mm. If your pipe is 2 inches (51 mm) in diameter, size your hole saw accordingly: 2-5/8 inches. Use the following chart for your tungsten carbide-tipped hole saws: Pipe Diameter (in) Next, refer to the chart for plumbing to see what hole saw sizes are available.īasically, you want to make sure it matches the size of your pipe. The recommendations are based on practical research.įor example, if you need to work on plumbing, and your pipes are PVC, a carbide-tipped hole saw is perfect. Project/Applicationīi-metal hole saw with carbide or HSS teeth edgeĭiamond-coated hole saw or carbide-tipped hole sawĪll you have to do is cross-reference your application to the hole saw type. I find it easier to check chart like below when it comes to sizes ranges available depending on what I’m working on. In automotive, you can use hole saws to make holes in metal or fiberglass panels for all kinds of modifications.Īfter identifying the materials you’ll work on, you can refer to a hole saw size chart to pick the proper tool. HVACįor HVAC work, you’d use hole saws, typically adjustable for convenience, to cut into duct or sheet metal. Hole saws cut holes in sheet metal, metal pipe, and metal conduit for many applications. Carpentry and woodworkingįor carpentry or woodwork, hole saws drill large holes in wood for pipes, cable runs, and other purposes. In plumbing, hole saws cut holes for pipes and fittings of many, many sizes. Electrical workĮlectrical projects need hole saws to cut holes in electrical boxes, wall panels, drywall, and conduits for wiring and cables. Some common projects where I’ve used hole saws include the following. Overview of Charts and How to Read Themįirst, let’s quickly identify the kind of project you need to work on. Whether it’s running pipes for plumbing, electrical conduit, installing a lock in a new door, adding ceiling lights and more. My goal is to help you save time in the long run as you’ll be able to quickly reference these based on exactly what you’re doing. With little time and effort, I’ll help familiarize you with each of these charts. Lucky for you, I’ve laid out all the important charts in a simple and go-to fashion. In some cases, the chart(s) you need aren’t easily accessible or even available. However, hole saw size charts aren’t always straightforward or clear when you try to reference them. Why?īecause, in reality, hole saw sizes run a pretty big range and come in many types. In projects that demand our handy skills, hole saw size charts can be really useful.
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