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11/90-MINUTE LOUNGE CHAIR
The 90-Minute Lounge Chair was named for its ability to
comfortably accommodate sitting for long durations. For an
unupholstered, uncontoured chair made of flat parts, the
lounge is deceptively comfortable. Its seat and back are
positioned and proportioned to balance your body in a
relaxed posture. This project introduces new machining and
assembly techniques. We’ll walk you through the process of
milling a pair of pockets into each of the chair’s sides, mak-
ing the matching hardware keys that lock parts into place,
and fabricating a jig that you’ll use during the assembly pro-
cess.
PROJECT THEMES
+ Pocket Cuts
+ Fabricating Hardware Keys
+ Making and Using an Assem-
bly Jig
+ Simple 3D Transformations
DESIGN FILES
+ 3D: AtFAB_LNG.skp
+ Test: AtFAB_LNG_TEST.skp
+ Jig: AtFAB_LNG_JIG.skp
+ Cut: AtFAB_LNG.dxf
SHEET MATERIALS
+ Two Sheets of 4′×8′×¾″
(1200x2400x19) for one chair,
tests, and jig
TOOLS & HARDWARE
+ Fasteners (36 in total)
+ Drill and bits:
+ Profiles: ¼″ end mill
+ Holes: 1⁄8″ end mill
+ See Appendix B
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