By the Universal Principle of the Conservation of Perversity, the base of the floor lamp just barely doesn’t fit under the edge of the Comfy Chair:
Well, I can fix that!
The feet descend from the fuzzy felt feet on the plant shelves, with the hex head socket transmogrified into a circle to match the chair feet. The support structure grew a flat plate to ensure it doesn’t pull loose from the platform:
Print ’em out, stick the felt in place:
Lift the chair (maybe with a small prybar atop some plywood to protect the floor), position the feet, lower gently: done!
While the M2 was warm, I ran off another set for the other Comfy Chair, just for symmetry.
The OpenSCAD source code as a GitHub Gist:
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| // Feet for Pride lift chair | |
| // Ed Nisley KE4ZNU 2020-05 | |
| Layout = "Build"; // [Show, Build] | |
| Support = true; | |
| //- Extrusion parameters must match reality! | |
| // Print with 2 shells and 3 solid layers | |
| /* [Hidden] */ | |
| ThreadThick = 0.25; | |
| ThreadWidth = 0.40; | |
| HoleWindage = 0.2; | |
| Protrusion = 0.1; // make holes end cleanly | |
| inch = 25.4; | |
| //———————- | |
| // Dimensions | |
| /* [Dimensions] */ | |
| ChairFootOD = 33.0; | |
| ChairFootRecess = 5.0; | |
| FeltOD = 39.0; | |
| FeltRecess = 2.5; | |
| FootPlate = 6*ThreadThick; | |
| FootWall = 4*ThreadWidth; | |
| FootOD = 2*FootWall + max(ChairFootOD,FeltOD); | |
| echo(str("Foot OD: ",FootOD)); | |
| FootTall = ChairFootRecess + FootPlate + FeltRecess; | |
| echo(str(" … height: "),FootTall); | |
| NumSides = 9*4; | |
| //———————- | |
| // Useful routines | |
| module FootPad() { | |
| difference() { | |
| cylinder(r=FootOD/2,h=FootTall,$fn=NumSides); | |
| translate([0,0,FeltRecess + FootPlate]) | |
| cylinder(d=ChairFootOD,h=2*ChairFootRecess,$fn=NumSides); | |
| translate([0,0,-Protrusion]) | |
| cylinder(d=FeltOD,h=(FeltRecess + Protrusion),$fn=NumSides); | |
| } | |
| } | |
| //——————- | |
| // Build it… | |
| if (Layout == "Show") | |
| FootPad(); | |
| if (Layout == "Build") { | |
| translate([0,0,FootTall]) | |
| rotate([180,0,0]) | |
| FootPad(); | |
| if (Support) | |
| color("Yellow") { | |
| for (Seg=[0:5]) | |
| rotate(30 + 360*Seg/6) | |
| translate([0,0,(ChairFootRecess – ThreadThick)/2]) | |
| cube([(ChairFootOD – 3*ThreadWidth), | |
| 2*ThreadWidth, | |
| (ChairFootRecess – ThreadThick)], | |
| center=true); | |
| rotate(180/6) | |
| cylinder(d=0.5*ChairFootOD,h=ThreadThick,$fn=6); | |
| } | |
| } |
The Smell of Molten Projects in the Morning 