Soft Close
Is 'soft close' the same as 'soft limits' on a CNC machine?
No. Soft close is a damping function for closure hardware in millwork, while soft limits are software travel boundaries in machine coordinates that stop axis motion before a collision. They are related only in that both manage end-of-travel energy.
Why are soft limits dependent on homing?
Soft limits reference machine coordinates, so the controller must establish a repeatable zero point by homing. Without homing, the software cannot know the physical axis position, and the so-called safe travel window is meaningless.
When would a cabinet shop specify soft-close instead of standard hardware?
When noise reduction, reduced impact loading, improved perceived quality, and lower long-term hardware wear are priorities, especially on high-use drawer banks and tall overlay doors. Heavy doors require matched dampers to avoid slam and rebound.
Soft close in millwork and cabinetry is a closing mechanism that uses a damper integrated into hinges, drawer slides, or lift systems to slow the final travel of a door, drawer, or panel, preventing slamming and noise. In CNC manufacturing, the related term soft limits refers to software-defined axis travel boundaries that stop motion before physical collisions.
In cabinet and millwork assembly, soft-close hinges and slides are matched to door mass, overlay, and drawer payload. An undersized damper lets the door slam or rebound at final closure. Technicians also check screw pull-out in the substrate, because loose fasteners turn damped closure into rattling. On the CNC side, soft limits are software travel boundaries entered into the control after homing. They stop an axis before mechanical interference, preventing overtravel and tool-changer collisions. A frequent mix-up occurs when someone asks for 'soft close' at a CNC cell; they usually mean soft limits, or soft jaws in workholding. Using precise language avoids specifying the wrong fixture or protection. Both concepts share the same physical goal: absorb or prevent end-of-travel impact to protect equipment, parts, and finished product.
Wrong hardware load rating: A soft-close hinge or slide that is undersized for door mass or drawer payload cannot absorb the closing energy, so the door slams or rebounds open and the hardware wears quickly.
Mis-set CNC soft limits after incorrect homing: If the machine is not homed, the software's position reference is wrong, so the safe travel window becomes inaccurate and the axis can crash or stop prematurely during legitimate motion.
Confusing soft close with soft clamping or soft jaws: In machining, soft jaws are sacrificial workholding jaws, so mixing up terms can lead to specifying the wrong fixture and compromising part holding force or surface protection.