DIY Large Sanding Block for Faster, Flatter Sanding
When sanding wide panels, tabletops, or other large woodworking projects, a standard sanding block can feel a little undersized. This shop-made large sanding block uses a half sheet of standard sandpaper, allowing you to cover more surface area with every stroke while helping keep the workpiece flat.
Best of all, the simple design makes it easy to secure and replace the sandpaper without clamps or complicated hardware.
A Clever Way to Hold the Sandpaper
The secret to this oversized sanding block is its interlocking construction. Two base pieces capture the ends of the sandpaper, while a sliding-dovetail mechanism locks everything together.
A rail passes through a slot in the upper base, and a dovetailed retainer slides over the rail to hold the assembly securely in place. The retainer also serves as a convenient handle.
This arrangement keeps the sandpaper stretched flat across the bottom of the block while making use of nearly the entire sanding surface.
Better Results on Large Surfaces
The larger sanding surface helps distribute pressure evenly across the workpiece. This makes the block especially useful for sanding wide panels and other flat surfaces where maintaining a consistent surface is important.
Because the sandpaper stays securely in place and more of its surface is put to work, the abrasive can also last longer before needing replacement.
The sliding retainer makes changing sandpaper straightforward, so you can quickly switch grits as you work through the sanding process.
With a few pieces of scrap wood and some straightforward joinery, you can make a practical sanding accessory that helps tackle larger sanding jobs with greater control.
How to Sand Curved Wood, Profiles & Contours
Shop-made sanding blocks are great for everyday sanding tasks, but some curves, carvings, and intricate profiles call for a different approach.
Discover how sanding mops, flap wheels, and rotary tool accessories can help you smooth irregular surfaces and reach tight spaces that ordinary sanding blocks can't handle.
EXPLORE SANDING TOOLS & TECHNIQUES → Make Sanding Tricky Shapes Easier
