What is beam angle?
Learn the simple difference between a narrow spot and a wide floodlight.
Always know the right cutout size
It’s the classic "measure twice, cut once" scenario, and it can be a bit nerve-wracking. But don't worry. Determining the right cutout size is actually very simple when you know what to look for.
Understanding the two key measurements
The first step is to understand that every recessed spotlight has two important diameters. Confusing these two is the number one cause of mistakes.
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The cutout size: Also called the drill hole or installation diameter. This is the diameter of the hole you actually need to cut in your ceiling. It corresponds to the part of the spotlight that sits inside the ceiling (the body and the clamps).
- The outer diameter: This is the diameter of the visible trim or bezel of the spotlight. This part is always wider than the cutout size, as its job is to neatly cover the edge of the hole you've just cut.
Think of it like a lid on a jar: the cutout size is the opening of the jar, and the outer diameter is the lid that sits on top and covers the rim.
Where to find the correct cutout size
You never have to guess the right size. The manufacturer will always provide this crucial piece of information. Here’s where to look:
- On the product box: The cutout size is almost always printed on the packaging, often represented by a symbol of a circle with a diagonal line through it (like the diameter symbol Ø) followed by the size in millimetres.
- On the product page: When you buy online, like at Fixerio, the cutout size is always listed in the technical specifications.
- In the installation manual: The booklet inside the box will have a diagram with the exact dimensions.
- On the fixture itself: Sometimes, the size is printed or engraved on the body of the spotlight.
The hole saw
For a perfect, clean, and round hole in plasterboard or wood ceilings, nothing beats a hole saw. This is an attachment for your drill that is specifically designed to cut holes of an exact diameter. You can either buy a set with various sizes or use an adjustable hole saw.
How to cut the perfect hole
Ready to go? Follow these simple steps for a flawless result.
Step 1: Safety first! turn off the power!
Before you even think about drilling, go to your fuse box and turn off the power to the circuit you'll be working on. Double-check that the power is off using a voltage tester.
Step 2: Measure and mark your locations
Carefully measure where you want your spotlights and mark the centre of each location on the ceiling with a pencil.
Step 3: Double-check the size and set up your tool
Confirm the required cutout size one last time. Set your adjustable hole saw to this exact diameter, or select the correct fixed-size saw. It's a good idea to double-check the saw's diameter with a tape measure before you start.
Step 4: Cut the hole
Place the pilot drill of your hole saw on your pencil mark, make sure your drill is level, and start drilling at a medium, steady speed. Let the saw do the work; don't apply too much pressure. In a few seconds, you'll have a perfect, clean hole.
Made a mistake? Don't panic!
Even with careful preparation, things can sometimes go slightly wrong. Here's what to do.
- If your hole is slightly too small: Don't try to force the spotlight in. Use a piece of sandpaper or a rasp to gently widen the hole until the fixture fits snugly.
- If your hole is too big: This is the more common fear, but don't worry, there’s a brilliant solution! You can use a "reducer ring" or "adapter ring". This is a thin, wide metal ring that sits between the ceiling and your spotlight, perfectly covering a hole that's too large. It's a simple, elegant lifesaver.
Measure, cut, and enjoy your new lighting
And that's all there is to it. By understanding the difference between the cutout size and the outer diameter, knowing where to find the correct information, and using the right tool, you can tackle this job with total confidence.
You're now perfectly prepared to install your recessed spotlights like a pro. If you're ever in doubt about the right size or tool for the job, the experts at Fixerio are always here to help.
