Drawer
Why does drawer production depend so heavily on tolerances?
Because the drawer must fit both the cabinet opening and the slide hardware simultaneously; small errors stack up across box width, slide offset, bottom groove location, and front attachment, affecting travel and squareness.
What CNC operations are most common for drawers?
Dado cutting, box joints or dovetails, pocketing for pulls, profile cutting of fronts, and drilling/drilling-equivalent operations for slide and handle patterns.
Why is the drawer front often machined separately from the drawer box?
The front frequently needs a different material thickness, finish quality, edge profile, or decorative geometry than the box, and it may also be indexed to face-frame or reveal requirements distinct from the box geometry.
A drawer in CNC machining and millwork is a rectangular pull-out storage box or front assembly built to fit a cabinet opening, consisting of a drawer box, bottom, front, and hardware interfaces such as slides or pulls. CNC workflows machine the complete part family, including joinery and slide-hole patterns.
On the CNC millwork floor, a drawer is treated as a tolerance-driven assembly rather than a simple wooden box. The programmer machines drawer box sides, front, bottom, joinery, slide-hole patterns, and sometimes a decorative front panel in a repeatable setup. Common operations include dado cutting, pocketing for pulls, box joints or dovetails, profile cutting, and drilling for hardware. Slide mounting locations are referenced from the drawer box geometry, not the finished face, so side-mount or undermount slides remain parallel and within the manufacturer’s offset window. Drawer dimensions must account for hardware clearance by deducting slide-system allowances from the cabinet opening. The real challenge is controlling squareness, slide spacing, joint clearance, and bottom fit; if any of these drift, the drawer binds, racks, or distorts during glue-up. Because CNC programs hold positional accuracy, the shop’s main task is assigning the right datum and allowances before production.
Slide misregistration: When slide-hole patterns are referenced from the wrong datum, slides end up out of parallel or at the wrong depth. This causes hard travel, self-opening, or face-frame interference during installation.
Joint fit too tight or too loose: Zero joint allowance forces hammer assembly, while excessive clearance racks the box and weakens glue lines. The result is cracked corners, blown-out pins, or drawers that distort after clamp pressure.
Cutter-radius and corner compensation errors: Inside corners machined with an end mill leave a radius, so mating parts do not seat fully and the drawer rocks or gaps at the joint. Missing tangency or relief creates interferences and incomplete seating.