Dodałem narzędzie do usuwania łożysk

Sasza/bearing+removal_tool.scad

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+/* 
+https://www.printables.com/model/175319-crank-bearing-removal-tool
+This work is licensed under a
+Creative Commons (4.0 International License)
+Attribution-NonCommercial
+
+*/
+
+thickness=3;
+spacing=1;
+minDiam=8;
+maxDiam=12;
+totalHeight=100;
+coneHeight=30;
+
+difference() {
+    union() {
+        translate([0, 0, totalHeight/2])
+          cylinder(h=totalHeight, d=minDiam, center=true);
+        translate([0, 0, coneHeight/2])
+          cylinder(h=coneHeight, d1=maxDiam, d2=minDiam, center=true);
+    }
+    translate([0, 0, totalHeight/2])
+      cylinder(h=totalHeight+0.2, d=minDiam-thickness, center=true);
+    translate([0, 0, coneHeight/2])
+      cylinder(h=coneHeight+0.2, d1=maxDiam-thickness, d2=minDiam-thickness, center=true);
+    for(a = [0:360/3:359]){
+        translate([0, 0, coneHeight/2]) rotate([0, 0, a])
+          cube([maxDiam, spacing, coneHeight+0.1], center=true);
+    }
+}