Nested parts
Separate bed-sized SVG files, no duplicate cut lines. No engraving. A part index is included in the SVG ZIP.
All-wood, double-sided C-channel construction
Core profiles alternate T–C–T–C–T. For a three-rail slide, the middle R2 carries C-channels on both faces while R1 and R3 carry opposing tongue laminations. Intermediate T rails also have tongues on both faces. Each channel has a glued stop and a service stop retained by a shared, removable end alignment pin.
For the most revealing proof piece, use an R1–R2–R3 assembly: one central rail with channels on BOTH faces and opposing tongue rails. Check kerf, fit and flex before a full-length design.
On each even-numbered rail, attach spacer strips at both edges, then wider inward-reaching keeper lips. R2, R4, etc. get channels on both faces when they have neighbors on both sides.
On each odd-numbered rail, glue narrow stems and wider tongue plates toward adjacent C-channel faces. Intermediate tongue rails have tongues on both faces, near opposite longitudinal ends.
The cavity and tongue are nominally one sheet thick. Dry-fit and sand tongue faces until they run freely without sanding away the lateral lip capture. Keep each rail straight and square.
Glue the full-extension end stop; insert the tongue lengthwise, then secure the other end with a removable, pegged stop. Test peg fit before installing the assembly.
Try full travel unloaded, including diagonal racking force. Confirm the lips don't peel, no tongue can exit a channel, and service-stop pins are accessible. No load rating is established.
Bill of materials
| Cut component | Quantity |
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Fit note: full-thickness tongues require sanding for running clearance. Refer to the Design warnings & safety notes section below for material-strength and installation limitations.
Mechanism note: For three rails, R2 has C-channels on both faces, while R1 and R3 have tongues. For longer designs the profiles alternate; an even rail count ends with a single-sided C-channel that has a flat outside mounting face. Travel is the drawer's additional movement, not overall reach. The software chooses the minimum number of moving stages that meet the section length and overlap constraints. All channel lips and stops are laser-cut wood, with no hardware. Validate physically before installation.