Test design for large hoop.

mechanics/hoop.scad

@@ -13,10 +13,13 @@ hoop(workareaWidth = 130, workareaHeight = 150);
 innerOuterFramesSpacing = 0.5;
 mountingHolesSpacing = 40;
 
-module hoop(workareaWidth = 130, workareaHeight = 150, frameHeight = 8, innerFrameThickness = 3, outerFrameThickness = 5, roundness = 5, tightenerSpace = 3, sizeOffset = 0, withHandle = true){
-    // inner frame
+module hoop(workareaWidth = 130, workareaHeight = 150, frameHeight = 8, innerFrameThickness = 3, outerFrameThickness = 5, roundness = 5, tightenerSpace = 3, sizeOffset = 0, withHandle = true, partsMode = 3)
+{
     innerFrameWidth = workareaWidth+innerFrameThickness*2+sizeOffset;
     innerFrameHeight = workareaHeight+innerFrameThickness*2+sizeOffset;
+    // inner frame
+    if (partsMode == 3 || partsMode == 1)
+    {    
     linear_extrude(height = 1.5) difference(){
         roundRectangle(innerFrameWidth, innerFrameHeight, roundness, center=true);
         intersection(){
@@ -28,8 +31,10 @@ module hoop(workareaWidth = 130, workareaHeight = 150, frameHeight = 8, innerFra
         roundRectangle(innerFrameWidth, innerFrameHeight, roundness, center=true);
         roundRectangle(workareaWidth+sizeOffset, workareaHeight+sizeOffset, roundness, center=true);
     }
-
+    }
     // outer frame
+    if (partsMode == 3 || partsMode == 2)
+    {
     spacing = innerOuterFramesSpacing*2;
     outerFrameWidth = innerFrameWidth+outerFrameThickness*2+spacing;
     outerFrameHeight =  innerFrameHeight+outerFrameThickness*2+spacing;
@@ -56,6 +61,7 @@ module hoop(workareaWidth = 130, workareaHeight = 150, frameHeight = 8, innerFra
         translate([outerFrameWidth/15+ innerFrameWidth/2,0,0]) {
             handle(frameHeight);
         }
+    }
 }
 
 module handle(frameHeight)

mechanics/hoop_large.scad

@@ -0,0 +1,82 @@
+use <hoop.scad>
+
+// some of the coordinates were set in messy way
+// be careful when changing area size and correct things when needed
+workareaWidth = 160;
+workareaHeight = 260;
+
+frameHeight = 9;
+innerFrameThickness = 5;
+outerFrameThickness = 10;
+
+// print all quarters from 0 to 3
+// infill at least 50%
+hoop_quarter(0);
+
+
+//hoop_large();
+
+module hoop_large()
+{
+    sizeOffset = 8;
+    innerFrameWidth = workareaWidth+innerFrameThickness*2+sizeOffset;
+    innerFrameHeight = workareaHeight+innerFrameThickness*2+sizeOffset;
+    spacing = 0.5*2;
+    outerFrameWidth = innerFrameWidth+outerFrameThickness*2+spacing;
+    outerFrameHeight =  innerFrameHeight+outerFrameThickness*2+spacing;
+    
+    
+    hoop(workareaWidth, workareaHeight, frameHeight, innerFrameThickness, outerFrameThickness, 
+    roundness = 1.5, 
+    tightenerSpace = 6, 
+    sizeOffset = sizeOffset, 
+    withHandle = false
+  );
+    
+    // here connectors are placed
+    // its offsets (bigger magic numbers) position is hardcoded by trial, messy way  
+    for (pos = [[1,0],[-1,0],[0,1],[0,-1]])
+        {
+            // inner frame connectors
+           translate([(outerFrameWidth/2 - outerFrameWidth/80)*pos[0],(outerFrameHeight/2 + 0)*pos[1],0])
+           if(pos != [0,1]) rotate([0,0,90*pos[0]]) connector(0.5);
+           else rotate([0,0,180]) connector(0.5);
+               
+            // outer frame connectors
+           translate([(outerFrameWidth/2 + outerFrameWidth/28)*pos[0],(outerFrameHeight/2 + outerFrameHeight/26)*pos[1],0])
+           if(pos != [0,1]) rotate([0,0,180+90*pos[0]]) connector();
+        }
+     
+    // mounting handle
+    translate([workareaWidth/2+workareaWidth/7, -40]) 
+    {
+        linear_extrude(height=2) polygon([[-10,-80],[40,-20],[0,0]]);
+        linear_extrude(height=1.0) polygon([[0,0],[40,20],[-5,150]]);
+        handle(frameHeight);
+    }
+}
+
+module hoop_quarter(index)
+{
+    quarters = [[1,1],[-1,1],[-1,-1],[1,-1]];
+    x = quarters[index][0];
+    y = quarters[index][1];
+    intersection(){
+        scale([x,y,1]) cube([workareaWidth ,workareaHeight,frameHeight+10]);
+        hoop_large();
+    }
+}
+
+module connector(holeHoffset = 0)
+{
+    tightnWidth = 30;
+    translate([-tightnWidth/2,0,0]) difference(){
+        cube([tightnWidth ,12,frameHeight]);
+        //screw hole
+        translate([tightnWidth,8,frameHeight/2+holeHoffset]) rotate([0,-90,0]) 
+        {        
+            cylinder(r=1.8, h=tightnWidth+1); cylinder(r=3.5*0.95, h=3, $fn=6);
+            translate([0,0,tightnWidth-3]) cylinder(r=3.5, h=3);
+        }
+    }
+}