Concealed Hinge For CNC and Production Dowel Boring

This Grass Tiomos self-close hinge is built for overlay doors on both face-frame and frameless cabinets, with a press-in dowel mount designed for CNC and production environments where cup screws slow things down.

Key Features

• Dowel mount presses pre-attached dowels directly into the door's bored holes, eliminating cup screws for faster production cycling.
• Self-close spring pulls the door shut over the last few degrees of travel for a consistent, automatic close.
• 110 degree opening angle delivers the standard everyday swing for full cabinet access.
• Straight arm, overlay geometry positions the door to cover the cabinet side with a narrow reveal.
• Three-way adjustment provides up to 3mm of movement in height, depth, and side to dial in an even reveal after the cabinet is set.
• Works on face-frame and frameless cabinets when paired with the appropriate Grass base plate, sold separately.

Where the Dowel Mount Earns Its Place

In a production shop running a CNC or line-bore cell, the cup-screw step is a bottleneck. This hinge skips it: the pre-attached dowels press straight into the door's bored dowel holes and seat the hinge without a driver. That single change adds up across a run of cabinet doors. The 35mm cup bores into the door back at a 12.6mm depth, and the arm then snaps to a Grass base plate on the cabinet. The plate is a separate purchase and must be a Grass plate matched to your cabinet construction and overlay. Plates from other brands will not connect to the Tiomos arm.

Steel Build in a Nickel Finish

The hinge is plated steel in a nickel finish, the standard workhorse combination for concealed cabinet hardware. Maximum door thickness for this hinge is 24mm, which covers standard doors and steps just past the typical 22mm ceiling, giving a bit of room for doors that run slightly thick. The self-close spring is a consistent closer across the run, and the three-way adjustment keeps doors square as the installation settles over time.

The Right Fit for This Hinge

This is the right call for cabinet shops and millwork operations that pre-bore doors on a CNC and want to pull cup screws out of the door-hang process entirely. It also suits contractors and installers working with pre-bored door blanks where the holes are already there. For frameless or face-frame projects that do not use CNC dowel boring, the screw-on version of this hinge accomplishes the same overlay result without requiring the dowel holes. For doors that need a cushioned, damped close rather than a spring pull, the Tiomos soft-close version is the one to specify instead.

Common Questions

Faster Door Hanging, Door After Door

Specify this hinge when the job uses CNC-bored doors and you want a reliable overlay close without the cup-screw step slowing the line.