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Bettesworth Construction
construction

Even More Sanding Tricks: 10 Practical Ways to Handle Curves, Corners and Edges

Ten reader-submitted workshop methods for sanding curves, tight spots, edges and imperfect joints, plus cautions on machine adaptations and sharp blades.

By Bettesworth Construction Team 4 min read
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These ten reader-submitted sanding tricks from WOOD Magazine use simple guides and shop-made aids to tackle curved work, tight spots, worn abrasives and awkward edges. They are individual workshop ideas—not controlled tests or universal machine-safety guidance—so match each method to your tool, material and task.

Guide curved work for a consistent width

Use a fence with a spindle sander

Allen Bakke describes clamping a bull-nosed bandsaw fence to the spindle sander’s table. He positions the workpiece between the abrasive spindle and the rounded nose of the fence, using the fence as a guide while sanding inside and outside rocker curves. The guide helps keep the width more consistent along the curve. Bakke’s description: “The solution lay in the bull-nosed fence I use to saw curves on my bandsaw.”

Get more from sanding abrasives

Try friction to warm a PSA pad

Johannes Michelsen suggests running a sander pad against a nonmarring surface, such as scrap carpet, before applying pressure-sensitive-adhesive (PSA) paper. This is his observation about helping the paper adhere; check that the pad and surface are compatible and follow the sander maker’s instructions.

Shift a detail-sander triangle

Bill Bartz notes that the outer edges of a detail-sander triangle can wear faster than the rest. His method is to move the paper forward and trim away worn regions to expose fresh abrasive. Bartz says moving it forward twice will triple its life; that is his reported result, not an independently verified guarantee.

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Make simple hand-sanding aids

Use an emery board for delicate spots

Verne Holmes suggests using an inexpensive disposable emery board as a small sanding stick for delicate work. He also mentions a metal diamond-dust nail file as a more permanent option. Choose a file and abrasive suited to the material and the amount of stock you need to remove.

Wrap paper around a continuous hinge

Tom Peters wraps sandpaper around an open piano hinge and uses a binder clip to hold it taut. Flipping the hinge presents a square edge that can reach into corners in grooves and dadoes. This gives you a narrow, firm backing where a larger sanding block will not fit.

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Back sandpaper with foam pipe insulation

Frank Ryan recommends cutting a short length of slit foam pipe insulation to support sandpaper on irregular shapes, inside cuts and rounded edges. Masking tape holds the paper in place. For a firmer backing, insert a dowel of the same diameter as the foam.

Adapt machines cautiously

Sharpen jointer knives on glass-backed abrasives

Eric Sutton describes a method using a beveled guide block, a pushblock, double-faced tape, a sheet of 220-grit wet/dry abrasive on flat glass, and a progression to 600 grit. He then flattens the knife’s back and removes the burr. This is a reader-contributed method involving a sharp blade, not a substitute for the jointer manufacturer’s sharpening and handling procedures. Use appropriate safeguards and only proceed if you can control the blade safely.

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Lay a belt sander on its side for edge sanding

Daniel Knippel proposes laying a belt sander on its side and securing it with a plywood cutout and clamps, leaving clearance for the belt. This is an improvised setup; the source does not establish that a manufacturer approves it or that it has been safety-assessed. Do not use it unless the tool’s instructions permit the orientation and you can secure the machine and workpiece against movement.

Build a shield near a disc sander

David Evans describes a plywood-and-pine shield that rests on the table of a belt/disc sander. Treat it as his shop-built idea, not certified guarding advice: the article provides no formal safety evaluation. Do not remove or obstruct a machine’s factory guard, and follow the manufacturer’s instructions for guarding and safe workpiece support.

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Repair an imperfect edge-to-edge joint

Fill the gap with a same-species wedge

WOOD Magazine contributor Chuck Hedlund describes gluing a wedge made from the same wood species into a poor edge-to-edge joint. He bevels both sides of the wedge by about 3°, lets the glue dry, then sands the repair flush. The angle is a detail of this contributor’s method, not a universal joint specification.

Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Support on Ko-Fi

Choose a sanding approach for the job

For tight corners, Kreg Tool’s FAQ search excerpt recommends long, even strokes along the grain to reduce visible sanding marks. It also suggests wrapping paper around a dull chisel or putty knife to reach a tight corner. Kreg’s excerpt says rough stock may call for starting around 60 or 80 grit and progressing toward 180–220 grit, but grit choice depends on the wood, the finish you want, the abrasive and the tool; that sequence is not a universal rule. The FAQ is available at Kreg Tool FAQs.

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  • For repeatable curves: a fence can guide work on a spindle sander.
  • For tight or irregular contours: try a hinge, emery board or foam-backed paper, choosing a firmer or more flexible backing to suit the shape.
  • For worn paper: inspect whether repositioning can expose unused abrasive, and confirm the attachment method fits your tool.
  • For machine adaptations or blade work: check the tool manufacturer’s safety instructions rather than treating a reader tip as approved procedure.

When buying abrasives, match the grit, format and attachment to the task and tool. For example, wet/dry sheets suit the glass-backed method described above; discs and detail-sander triangles need to match the specific sander’s dimensions and attachment system.

Quick Recap

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Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.

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