Replace the surface.
Lift out individual cushion cassettes for access, cleaning and revision. The contact surface can evolve without replacing the entire chair.
P1 · personal furniture
Your place.
Every position.
An upright chair, a deep recline, a near-flat retreat. One supported cradle, with natural-latex comfort and a massage system built around you.
Furniture concept · stationary prototype planned
Design visualization / proportions indicative
Lounge pose · proportioned support deck, illustrative pivots
3posesWork, lounge and near-flat
12back panelsRemovable natural-latex cassettes
2massage headsShared height, individual reach and force
Comfort, from the inside out
Soft where you feel it.
Open where it matters.
Natural latex gives the support layer its resilience. Wool batting and washable wool or cotton covers make the surface a replaceable part of the design.
Give air its own job.
Support air, compression air and ventilation use three separate circuits. Cushion shape, body compression and cooling are deliberately controlled separately.
Support every pose.
A four-segment deck sits inside an approximately 30 in-wide, 7 ft shell. Mechanical locks carry the occupied load after positioning.
A more deliberate massage
Two heads.
One coordinated motion.
A lower gantry positions the massage heads while a separate upper plane moves the cushions. Each head controls its own contact force.
Y shared · X + Z independent
The diagram illustrates the two mechanical planes. Heads retract before changes of slit, gantry position or chair pose. Final pivots, force limits and fit remain design work.
Components & cost transparency
See what comfort is made of.
Open a component to see its scope. Estimates, historical references and unpriced work are shown as they appear in the design record.
Complete back moduleEngineering estimate$2,300–6,500
Frame, cushion positioning and two-head mechanism. This is the parent scope; the rows below are included, not additional.
Design source: 10-xy-back-layout-and-unit-costs.mdTwo-head pneumatic mechanismIncluded subassembly$740–2,060
One shared Y gantry, two independent X slides and two force-controlled pneumatic Z heads. Repeat-build target $850–1,300 is a target, not a supplier quote.
Design source: 10-xy-back-layout-and-unit-costs.mdShared Y gantryIncluded in mechanism$170–470
One shared vertical carriage keeps the two heads at the same height.
Design source: 10-xy-back-layout-and-unit-costs.mdX slide · each headIncluded in mechanism$120–305
Two required; each head can travel laterally on its own.
Design source: 10-xy-back-layout-and-unit-costs.mdPneumatic Z · each headIncluded in mechanism$145–430
Two required; each head has its own force-controlled contact axis.
Design source: 10-xy-back-layout-and-unit-costs.mdComplete P1 chairUnpricedUnpriced
Shell, base, full pose system, cushions, integration and assembly still need a complete BOM.
Design source: 07-bill-of-materials.mdFrom architecture to object
The path ahead.
This page shows the current design direction. These are the development steps ahead, with the open engineering work kept visible.
- Fit the bodyFreeze the support map and clearances.
- Build the backProve the two planes and guarded head travel.
- Integrate the cradleAdd locks, pose drive and service access.
- Qualify the experienceConfirm occupied loads, comfort and controls.
The useful details
A closer look.
Is this a finished massage chair?
It is a design-stage stationary furniture prototype. Geometry, force limits and component choices still need qualification; no treatment or crash-restraint rating is claimed.
Do both massage heads move independently?
They share one Y height. Each head has its own X travel and force-controlled Z contact. The cushion-positioning rails are a separate mechanism above the massage gantry.
What holds the occupied chair in position?
Mechanical locks carry the occupied load. Actuators move the mechanism into position; controls retract both massage heads before pose changes.
What does the quoted cost cover?
The $2,300–6,500 historical range is for a complete back module, not a finished chair or retail price. The smaller mechanism and axis ranges are nested within it.
Designed in the open
Understand every layer.
Explore the architecture, the materials and the choices still ahead. The design preview is grounded in the current project record.
Source review: October 24, 2026. Visualizations explain the proposed architecture; they are not manufacturing drawings or photographs of built hardware.