These flap discs work as wood grinding discs and wood sanding discs for an angle grinder, for woodworkers, carvers and builders who need to remove material fast and then smooth it.
These flap discs work as wood grinding discs and wood sanding discs for an angle grinder, for woodworkers, carvers and builders who need to remove material fast and then smooth it. Every disc here is listed for both wood and metal.
- 4-1/2" x 7/8" zirconia alumina Type 29 flap discs, 20 per pack, in 60 or 80 grit, on a fiberglass backing
- 7" x 7/8" zirconia and ceramic blend Type 27 flap discs, 5 per pack, in 40, 60 or 80 grit
- 7" x 7/8" calcined aluminum oxide Type 27 flap discs, 10 per pack, in 40 grit, on a fiberglass backing
- Uses listed across the range: grinding, blending, deburring and finishing, with rust and paint removal on the 60 grit zirconia disc
- All discs have a 7/8" (22 mm) arbor. Maximum speed is 13,300 RPM on the 4-1/2" discs and 8,500 RPM on the 7" discs.
Frequently asked questions
Is a 40 grit flap disc good for wood?
Yes, 40 grit is the coarse choice for fast stock removal on wood. Follow it with 60 grit to clean up the deep scratches, then 80 grit before finer sanding. Both 7" disc lines come in 40 grit, and the 4-1/2" discs come in 60 and 80.
Can I use a wood sanding disc on an angle grinder?
Yes. Flap discs are made to run on an angle grinder, and every disc in this collection fits a 7/8" arbor. Keep the disc moving with light pressure, because wood scorches quickly if the disc sits in one spot. Never exceed the maximum RPM marked on the disc.
Type 27 or Type 29: which wood grinding disc should I choose?
Choose Type 29 for edges and contours and Type 27 for broad, flat surfaces. Here the 4-1/2" discs are Type 29 and the 7" discs are Type 27. A Type 29 disc has a conical face and works at a steeper angle, while a Type 27 disc is flat and sits nearly level on the work.
Do wood grinding discs also work on metal?
These do. Every disc in this collection is listed for metal as well as wood, and two of them also list stainless steel. Keep separate discs for each job, though, so resin, paint and wood residue does not end up on metal parts you plan to weld or finish.
Browse every size and grain in our flap discs collection, and see our guides to Type 27 vs Type 29 flap discs and woodworking grit progression.
Shipping, pickup and returns
- Ships from Whitby, Ontario to Canada and the United States. In-stock orders are dispatched within 1–2 business days.
- Free shipping on orders of $100 CAD or more in Canada and US$100 or more to the US. Otherwise a $20 CAD flat rate in Canada, a $27.50 CAD flat rate to the US, or carrier rates at checkout.
- Local pickup at Unit 2, 1450 Victoria Street East, Whitby, Ontario. Orders are usually ready in about 1 hour during business hours.
- Returns within 14 days of receipt for unused items in original packaging. Refund policy
- Buying in volume? Request a wholesale quote. We reply within 1–2 business days.