Drill bits are categorised primarily by material and function to match them correctly to the task. Key material types include High-Speed Steel (HSS) for general-purpose use on wood, plastic, and soft metals; Cobalt for tougher metals like stainless steel; and Carbide-Tipped or Masonry bits for concrete, stone, and brick, often used with a hammer action. Functional bits, often for wood, include the general-purpose Twist Bit, the Brad-Point for precise holes, the Spade bit for large diameters, and the Forstner bit for flat-bottomed holes. Other functional types are the Hole Saw for cutting very large holes and the Countersink for recessing screw heads. Finally, shank types such as Straight, Hex, and SDS ensure a secure and compatible fit with the drill's chuck.

Drill bits are designed for specific materials, with distinct uses for wood, metal, and masonry. Wood drill bits typically have a pointed tip for precision, metal bits feature durable construction for cutting through metals, while masonry bits have a hardened tip for penetrating hard surfaces like brick or concrete. Understanding the correct types of drill bits ensures efficient and effective drilling.

To sand plaster effectively, use sandpaper ranging from 120 to 220 grit for general smoothing before painting. For heavier tasks, such as removing lumps or leveling uneven areas, start with 60 to 100 grit before transitioning to a finer finish. Aluminum oxide or mesh sandpapers are recommended to ensure durability and prevent clogging. Using a sanding block helps maintain a flat surface, while light, circular motions prevent gouging the material.

It is crucial to avoid grits coarser than 100 on finished plaster to prevent deep scratches that require additional filling. Since plaster generates significant dust, users should regularly clean their sandpaper or use a vacuum attachment to maintain efficiency. Safety is a priority; always wear a dust mask and goggles during the process. This approach ensures a professional, smooth finish suitable for final polishing or painting applications.

Fine grit sandpaper, typically 120 to 180 grit, is best used on plaster once the surface has already been roughly flattened. Use it to smooth out tool marks, light ridges, or the slight texture left after coarser sanding. It's ideal for finishing coats of plaster or skimmed surfaces before painting or wallpapering. Work gently with light pressure to avoid cutting through the skim coat. A sanding block or pole sander helps maintain even contact across the surface and prevents hollows forming from uneven hand pressure.

Coarse grit sandpaper, around 40 to 80 grit, is used on plaster when you need to remove significant high spots, lumps, or ridges left after application. It cuts material away quickly, making it useful on rough backing coats or where a surface is noticeably uneven. Avoid using it on finish or skim coats as it will leave deep scratches that are difficult to remove. Always follow up coarse sanding with progressively finer grits to achieve a smooth result. A dust mask is essential as coarse sanding generates large amounts of fine plaster dust.

To effectively drill into brick, you should use a hammer drill paired with a masonry drill bit, specifically one that is tungsten carbide-tipped and features a distinctive spade-shaped tip designed to grind through the tough material. For faster, more efficient drilling, especially in hard or engineered bricks, an SDS drill bit is recommended, providing better performance. Key techniques involve ensuring the drill is always set to the hammer function for effective penetration and applying firm, consistent pressure. It is also advised to start with a smaller pilot hole if necessary. Always ensure the chosen bit size precisely matches the diameter of your wall plug. While a standard masonry bit and combi drill suffice for most basic DIY tasks, an SDS drill should be used for tougher, denser brick materials.

Drill bits for masonry are specifically designed to cut through hard materials like brick, concrete, and stone. Common types include tungsten carbide-tipped bits, which are durable and effective for heavy-duty tasks, and diamond-tipped bits, offering enhanced precision and durability for tougher masonry projects. Using the right drill bit ensures efficient, clean drilling.

Carbide-tipped drill bits are ideal for routine brick drilling due to their durability and efficiency in penetrating hard materials. For tougher or more intensive projects, diamond-tipped drill bits are recommended as they offer superior strength and longevity, making them suitable for cutting through very dense or reinforced brick surfaces.

Drilling into tiles requires selecting the correct bit and following essential steps to prevent cracking and burning. Use diamond-tipped bits for hard materials like porcelain and stone for durability and precision, and opt for carbide-tipped or tungsten carbide spear-pointed bits for softer ceramic and glass tiles to prevent chipping. For large holes (15mm or larger), use diamond hole saws. Crucial tips for success include never using the drill's hammer setting, as this will crack the tile. It is vital to keep the drill bit cool by frequently dipping it in water or using a spray bottle to prevent overheating. Apply masking tape over the drilling spot to prevent the bit from slipping, and always maintain a low, consistent speed to ensure a clean result and avoid damaging the tile.

To drill into ceramic tiles, use a carbide-tipped masonry drill bit, which provides the necessary hardness to penetrate the tile without causing cracks. Start drilling at a slow speed to maintain control and gradually increase speed as needed, ensuring a smooth hole without damaging the tile surface.

For drilling into glass tiles, a diamond-tipped drill bit is ideal. This type of bit is specifically designed to provide precision and reduce the risk of cracking the tiles. Ensure you use water as a lubricant to keep the drill bit cool and to minimize friction during the drilling process.

To choose the correct drill bit for different types of tile, consider the tile's material. For ceramic tiles, a carbide-tipped masonry bit is ideal, while porcelain tiles require a diamond-tipped bit for efficient drilling. Always ensure the drill has a slow speed setting to prevent slipping and possible damage to the tile surface.

SDS Plus (10mm shank) suits light-to-medium duty drilling up to approximately 1 inch, making it ideal for residential tasks like hanging pictures, shelving, anchoring, and overhead work. It handles 4–30mm diameter holes in concrete and offers lighter, more portable tools.
SDS Max (18mm shank) is built for heavy-duty drilling and demolition, handling 13mm to over 44mm holes and intensive chipping. It's the choice for deep holes, large HVAC conduit installation, and sustained high-impact breaking.
The two systems are not interchangeable, as Max bits cannot be used in Plus drills, though adapters exist. The core distinction comes down to shank size, groove design, impact energy, and application scale: SDS Plus for everyday drilling and SDS Max for professional-grade demolition and heavy construction.

SDS Plus is a type of drill system designed for tasks requiring high-impact drilling and chiseling, especially in concrete and masonry. It is ideal for lighter-duty work compared to the larger SDS Max, offering easier handling and compatibility with a wider range of smaller power tools, making it suitable for many household and commercial applications.

SDS Max is a heavy-duty drill bit system used in rotary hammer drills for demanding applications such as chiseling and drilling into hard materials like concrete and stone. It features a larger shank than the SDS Plus, enabling higher power transmission and greater durability in tough construction tasks.

SDS Plus drill bits are widely used for light to medium-duty drilling tasks in masonry and concrete. They offer a secure fit with a unique shank design that facilitates efficient power transfer from the drill, resulting in faster drilling. Unlike SDS Max, they are typically utilised in smaller rotary hammers and drills for enhanced control.

SDS Max drill bits are robust tools designed for heavy-duty drilling in materials like concrete and masonry. The SDS Max system features a larger shank and a specialised locking mechanism, allowing for increased power and efficiency in rotary hammers. Compared to SDS Plus, SDS Max offers superior performance for demanding applications.