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Dado grooves for shelves and carcass housings.
Primary blade: Dado Stack Set
Groove and housing work is about fitting one panel cleanly into another without forcing the joint. In cabinet carcasses, shelf dados, back panel grooves, and divider housings all rely on a cut width that matches the board thickness actually in hand. The stated board size on melamine, MDF, plywood, or pine often differs slightly from the measured thickness, so the stack needs checking before the first pass.
Start by measuring the panel with verniers, then build the Dado Stack Set to suit that reading rather than the label on the pack. Set depth from the finished face requirement, because a back groove, shelf housing, and drawer base slot do not all want the same depth. Run a test cut in offcut from the same sheet, then check fit, breakout, and bottom flatness before cutting production parts.
On South African shop jobs, melamine and veneered board show faults quickly when the groove is rushed or the panel support is poor. During load-shedding windows, operators often try to batch too much at once, which is where stopped housings end up overrun and shelf lines stop matching from side to side. Mark face sides clearly, keep reference edges consistent, and separate test pieces from sellable parts so mix-ups do not travel to assembly.
A good groove starts with machine setup, not with the panel on the table. Confirm arbor length for the full stack, make sure chippers and shims are seated correctly, and verify that the fence is square to the blade path. When sending a query through the site, include the board type, measured thickness, and whether the cut is through, stopped, or for a concealed back panel.
Work from Johannesburg, Durban, Cape Town, Gqeberha, Bloemfontein, Polokwane, and Mbombela often mixes imported sheet stock with locally available board. Thickness variation between batches is common enough that one setup should not be assumed safe for the next delivery. Where shelf pins, cam fittings, or confirmat screws follow the housing cut, leave room for that hardware in the layout before machining begins.
Most problems show up as a groove that is too tight, too loose, too deep, or chipped along the top edge. A tight housing swells the side panel or strips melamine on assembly, while an oversized cut leaves shelves drifting out of square. Stopped grooves also go wrong when the plunge mark is inconsistent, especially on visible cabinet interiors.
Dust, resin build-up, and hurried shim changes are frequent causes of scrap in groove and housing jobs across SA workshops. Match the blade to the relevant kerf note before changing width, and use the contact form with your city, board material, and nominal thickness if the fit keeps moving between batches. If the saw is leaving a rough bottom in the trench, note the machine type and current stack arrangement when you send details.
Primary path: Dado Stack Set. Browse more under Blades and Kerfs.
Useful job details include the saw arbor size, bore, board material, cut depth, and target groove width. Add photos if chip-out is showing on melamine faces or if the housing bottom has ridges after the pass. It also helps to state whether the job is cabinet shelving, wardrobe divisions, drawer bottoms, or back panel grooves, because the fit requirement changes with the application.
For this type of setup, arbor hardware and spacing parts matter as much as the cutters themselves. Check Holders for related mounting items, and use the printable references under Resources when the machine operator and assembler need the same cut notes at the bench.
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For groove width, board type, and arbor details, use our contact form from Kya Sands, Johannesburg. Include the material, required housing depth, and whether you are cutting MDF, melamine-faced board, or plywood.
