Sanding: How to Get Everything Smooth!
Removing, smoothing, preparing, beautifying: Sanding is the multi-talented star of DIY projects. What do you need to make sure everything goes smoothly when sanding, and what is the best way to go about it? Here are the most important tips for the perfect finish.
AIAIAIWhat is sanding?
Sanding is a so-called abrasive manufacturing process, in which materials are removed from a workpiece in the form of chips or dust. Since sanding is an exceptionally fine processing method, the dust is extremely fine – so always wear a respirator mask! Sanding has three main purposes:
- Smoothing surfaces
- Sharpening tools
- Cutting materials
Depending on the task, you will need a sander or grinding wheels, whetstones, and sandpaper.
Which sander for which job?
Whether you want to sand parquet flooring or strip old paint from a garden gate: when it comes to sanding, it is all about the perfect combination of sander, abrasive, and sanding technique. In theory, any sander can handle any sanding task, but you should always use the optimal tool. Here is the overview:
- Belt sander: Large surfaces with high material removal
- Detail sander: Edges, corners, and hard-to-reach areas
- Random orbital sander: Fine sanding and polishing of flat or curved surfaces
- Sheet sander: Rough work on large surfaces
- Angle grinder: For grinding and cutting
- Drywall sander: Smoothing walls and ceilings
- Hand sander: Precision work and delicate corners
Sanding done right: Here’s how
Every sander can be used in several ways. With the right sanding method, you ensure optimal material removal with the lowest possible risk of damaging your workpiece.
Dry sanding
Dry sanding does not require water, oil, or emulsions as lubricants or coolants. This allows you to achieve particularly high material removal, making dry sanding ideal for coarse sanding.
Wet sanding
With wet sanding, a liquid serves as a lubricant and also cools the workpiece during processing. This allows you to sand at high speeds. Wet sanding is particularly suitable for filled, painted car bodies. Wood for bathroom furniture or other wet areas is also moistened during the sanding process.
Hand sanding
A non-slip hand sanding block made of cork or hard rubber, along with soft fleece-based abrasives, enables precise and effective work. Hand sanders are a great choice for complex shapes and hard-to-reach areas. For example, you can use them to remove old paint from window frames.
Belt sanding
Electric belt sanders work with a sanding belt that is guided and driven by motorized rollers. They sand large surfaces particularly quickly, making belt sanders ideal for coarse and preliminary sanding, as well as for removing paint from doors or gates.
Our Tip: Only with the right abrasive does your sander become the perfect tool. Find out what matters in our "Sandpaper" Guide.
Sanding Wood in 4 Steps
Get your tools ready and start sanding! Our step-by-step guide for wood generally applies to other materials as well. If you are unsure, check out our tutorials!
Step 1: Coarse Sanding
Secure the workpiece on the workbench or make sure it is stable. Use a coarse grit sandpaper (P40 to P80) and work along the wood grain. Make sure to use even movements and light pressure. Do not let the sander rest in one spot for too long.
Step 2: Moisten the Wood
Moisten the wood evenly with a sponge. This causes the wood fibers to stand up, making them easier to sand down. Let the wood dry slightly.
Step 3: Medium Sanding
Switch to a medium grit sandpaper (P120 to P180). Work evenly with light pressure across the grain. Remove the wood dust and moisten the workpiece once more.
Step 4: Fine Sanding
For the final touch, use a fine sandpaper with a grit of P180 to P400. Work in the direction of the grain until all unevenness has disappeared.
Top tip: Always keep some sandpaper in your toolbox. It's a quick and easy way to remove leftover glue or layers of paint with minimal effort.
