Collection: Delta Abrasive Triangle

The abrasive triangle, or delta pad, is made for one thing that other shapes cannot do: sanding into a corner. Its tip reaches the bottom of a corner, along a skirting board or into a rebate, where a round disc leaves an unsanded strip.

The 2 references in the catalogue

• Mirka Abranet, hook-and-loop triangle on micro-perforated mesh.
• Mirka Gold, perforated hook-and-loop triangle on paper backing.

See also our abrasive sheets and our abrasive sponges.

Mesh or paper, a question of extraction

The Gold triangle is a conventional perforated paper abrasive: dust escapes through the holes, which must match those of the pad.

The Abranet triangle is open across its whole surface. Extraction works everywhere under the triangle, the abrasive clogs much less and the pad does not need a particular hole pattern. On fillers and paints, which quickly load an abrasive, the difference in life is clear.

The tip wears first

This is the characteristic of the shape: the tip travels a shorter distance than the edges with each oscillation, but it takes all the pressure when working into a corner. It is therefore dead while the rest of the triangle is still good.

Two habits save abrasive. Rotate the triangle a third of a turn as soon as the tip weakens, which the hook-and-loop attachment allows, to use all three corners. And keep worn triangles for roughing rather than throwing them away.