Zimablade rack

server_rack/scad/vents_simple4.scad

@@ -0,0 +1,305 @@
+/*
+    INTRODUCTION
+
+Fan adaptor in scad.
+
+Versions:
+1.11    Played around with a module for the flange. Works fine, but some more understanding is needed.
+1.1.    Aiming for a more complex version now. I will try and use IF statements to choose between having a lower flange with holes going through the inside or not. Essentially emulating the thruholes and no holes versions of the SWorks files. Geometry still very simple and unrefined. There is a lot of repetition, I should get the hang of using modules and functions I guess.
+1.      Very simple, two flanges, cowling, and no special treatment of lower flange holes.
+
+Initial values are 120 to 80.
+
+Very basic appearance at the moment, just testing out the software and getting a feel for it. I may tidy up in later versions and as I learn more about the software.
+*/
+
+/*  BASIC SETUP  */
+//Select type option. Cowling: Small fan screws accessed through the cowling. External: Small fan screws accessed from outside of the adaptor. Customiser makes the "Cowling" option look messy, but they are fine once created. Flange: A simple flat plate with mounting holes for large and small size but no cowling. Very inefficient flow but a very low profile.
+holeaccess="Cowling"; //[Cowling,External,Flange]
+
+//Smoothing of cylindrical faces (Can be ignored under most circumstances)
+$fn = 80;
+
+/*  VARIABLES  */
+//Nominal fan sizes
+//Nominal size of the smaller fan
+smallsize=80;
+//Nominal size of the larger fan. It is possible to choose the same size for both. This can lead to funky results sometimes.
+largesize=120;
+
+//Flange thicknesses
+//Small side flange thickness
+smallflange=3; //[1:0.2:6]
+//Large side flange thickness (flange thickness used for the "Flange" option above)
+largeflange=4; //[1:0.2:6]
+
+//Cowling size
+//Total height is cowling height plus the flange thicknesses.
+//Thickness of the cowling wall
+wallthickness=2; //[1:0.2:5]
+//Height of the cowling, taller generally leads to better airflow. Total height will be this plus flange thicknesses.
+cowlingheight=30;
+
+/*
+Mounting hole spacing and size
+Size is usually pretty uniform (4.5 mm) due to using standard screws however for smaller sizes the screw holes are likely smaller
+*/
+//Spacing
+//Small fan side mounting hole spacing
+smallholes=71.5;
+//Large fan side mounting hole spacing
+largeholes=105;
+//Size
+//Diameter of the mounting holes on the small fan side
+smallholesize=4.5; //[2:0.25:6]
+//Diameter of the mounting holes on the large fan side
+largeholesize=4.5; //[2:0.25:6]
+
+
+/*  MODULES  */
+module flange (size_fan,thick_wall,thick_flange,space_mount,size_mount) {
+/*
+    Creates a flange with or without mounting holes cut.
+    
+    VARIABLES
+size_fan:       The given nominal size of the fan
+thick_wall:     The cowling wall thickness
+thick_flange:   The thickness of the flange
+space_mount:    The spacing between mounting holes. If 0 then no holes will be cut.
+size_mount:     The diameter of the mounting holes
+*/
+    
+//OPERATION
+    //difference() to perform subtractive operations on the base flange piece
+    difference(){
+        //translate() half flange thickness from initial centre position.
+        //This ensures the base small flange is sitting at z=0 on the XY plane.
+        translate([0,0,thick_flange/2])
+        //Uncut flange shape.
+        cube(size=[size_fan+thick_wall*2, size_fan+thick_wall*2, thick_flange], center=true);
+        
+        //Cut fan hole
+        translate([0,0,thick_flange/2])
+        //Hole shape removed by the difference() operation
+        cylinder(h=thick_flange, d=size_fan, center=true);
+        
+        //Check for mounting hole requirement
+        if (space_mount>0) {
+            //Cut each hole individually.
+            //I haven't yet found a pattern command and mirror doesn't copy as far as I can see.
+            //This way will suffice for now.
+            translate([space_mount/2, space_mount/2, thick_flange/2])
+            cylinder(h=thick_flange, d=size_mount, center=true);
+            
+            translate([-space_mount/2, space_mount/2, thick_flange/2])
+            cylinder(h=thick_flange, d=size_mount, center=true);
+            
+            translate([space_mount/2, -space_mount/2, thick_flange/2])
+            cylinder(h=thick_flange, d=size_mount, center=true);
+            
+            translate([-space_mount/2, -space_mount/2, thick_flange/2])
+            cylinder(h=thick_flange, d=size_mount, center=true);
+        } // if (space_mount>0)
+        
+        else { /*do nothing*/ } // else
+        
+    } // difference
+} // module flange
+
+
+/*
+    MODEL CODE
+    Starts with an if statement to distinguish between type choices.
+    holeaccess variable is user choice.
+        Choices are:
+        1. Cowling:     Small side hole access from inside the cowling
+        2. External:    Small side access from outside the adaptor
+        3. Angled:      With an angle between flanges. Hole access is as external.
+*/
+if (holeaccess=="Cowling") {
+/*
+    MATHS
+*/
+//Calculate boss and countersink sizes
+smallholeboss=smallholesize*3;
+smallholecountersink=smallholesize*1.75;
+
+//difference() to subtract the inner parts and mounting holes from a solid geometry.
+difference(){
+/*
+union() command to join cowling and flanges together and add small side hole bosses.
+    Lower flange built centred on the xy plane at z=0 
+    Cowling built centrally on top of the lower flange
+    Upper flange built centrally on top of the cowling
+
+Create geometry:
+1. lower flange
+2. cowling
+3. lower mounting hole bosses
+4. upper flange
+*/
+    union(){
+    //1. Lower flange
+        translate([0,0,smallflange/2])
+        //Uncut flange shape. Centred for ease. The position uses basic maths.
+        cube(size=[smallsize+wallthickness*2, smallsize+wallthickness*2, smallflange], center=true);
+
+    //2. Cowling
+        translate([0,0,smallflange+cowlingheight/2])
+        //tapered cylinder for cowling
+        //difference to other tapered cylinder
+        cylinder(h=cowlingheight, r1=smallsize/2+wallthickness, r2=largesize/2+wallthickness, center=true);
+
+    //3. Lower mounting hole bosses
+        /*
+        Extruding the mounting hole bosses.
+        I don't know of a way to extrude to a surface, so for now will do it this way.
+        Mirror seems to not have a copy option, so I have to recreate each boss for each corner. Again, there is probably a better way to do it, but I will have to learn it.
+        */
+        translate([smallholes/2,smallholes/2, (cowlingheight+smallflange)/2])
+        cylinder(h=cowlingheight+smallflange, d=smallholeboss, center=true);
+        
+        translate([-smallholes/2,smallholes/2, (cowlingheight+smallflange)/2])
+        cylinder(h=cowlingheight+smallflange, d=smallholeboss, center=true);
+        
+        translate([smallholes/2,-smallholes/2, (cowlingheight+smallflange)/2])
+        cylinder(h=cowlingheight+smallflange, d=smallholeboss, center=true);
+        
+        translate([-smallholes/2,-smallholes/2, (cowlingheight+smallflange)/2])
+        cylinder(h=cowlingheight+smallflange, d=smallholeboss, center=true);
+            
+    //4. Upper flange
+        translate([0,0,smallflange+cowlingheight])
+        flange(largesize,wallthickness,largeflange,largeholes,largeholesize);        
+    } //union
+
+/*
+Remove inner geometry:
+1. lower flange fan hole
+2. cowling
+3. lower mounting holes
+4. lower mounting hole countersink
+*/
+    //1. Lower flange fan hole
+        translate([0,0,smallflange/2])
+        //Uncut flange shape. Centred for ease. The position uses basic maths.
+        cylinder(h=smallflange, d=smallsize, center=true);
+
+    //2. Cowling
+        translate([0,0,smallflange+cowlingheight/2])
+        //tapered cylinder for cowling
+        //difference to other tapered cylinder
+        cylinder(h=cowlingheight, d1=smallsize, d2=largesize, center=true);
+        
+    //3. lower mounting holes
+        /*
+        Cutting the mounting holes.
+        Mirror seems to not have a copy option, so I have to recreate each hole for each corner. Again, there is probably a better way to do it, but I will have to learn it.
+        */
+        translate([smallholes/2,smallholes/2,(smallflange+cowlingheight+largeflange)/2])
+        cylinder(h=smallflange+cowlingheight+largeflange, d=smallholesize, center=true);
+        
+        translate([-smallholes/2,smallholes/2,(smallflange+cowlingheight+largeflange)/2])
+        cylinder(h=smallflange+cowlingheight+largeflange, d=smallholesize, center=true);
+        
+        translate([smallholes/2,-smallholes/2,(smallflange+cowlingheight+largeflange)/2])
+        cylinder(h=smallflange+cowlingheight+largeflange, d=smallholesize, center=true);
+        
+        translate([-smallholes/2,-smallholes/2,(smallflange+cowlingheight+largeflange)/2])
+        cylinder(h=smallflange+cowlingheight+largeflange, d=smallholesize, center=true);
+            
+    //4. lower mounting hole countersink
+        /*
+        Cutting the mounting hole counter sinks.
+        Mirror seems to not have a copy option, so I have to recreate each countersink for each corner. Again, there is probably a better way to do it, but I will have to learn it.
+        */
+        translate([smallholes/2,smallholes/2, (cowlingheight+largeflange)/2+smallflange])
+        cylinder(h=cowlingheight+largeflange, d=smallholecountersink, center=true);
+        
+        translate([-smallholes/2,smallholes/2, (cowlingheight+largeflange)/2+smallflange])
+        cylinder(h=cowlingheight+largeflange, d=smallholecountersink, center=true);
+        
+        translate([smallholes/2,-smallholes/2, (cowlingheight+largeflange)/2+smallflange])
+        cylinder(h=cowlingheight+largeflange, d=smallholecountersink, center=true);
+        
+        translate([-smallholes/2,-smallholes/2, (cowlingheight+largeflange)/2+smallflange])
+        cylinder(h=cowlingheight+largeflange, d=smallholecountersink, center=true);
+
+} //difference
+} //if
+
+else if (holeaccess=="External") {
+/*
+1. Begin by revolving the shape of the cowling.
+2: Add the lower and upper flanges using the flange() module
+
+1. Revolve the cowling
+Draw revolved polygon shape
+This requires a polygon following points inside a rotate_extrude
+*/
+    
+    rotate_extrude(angle=360, convexity=10)
+        polygon(points=[[smallsize/2,smallflange],
+        [(smallsize/2)+wallthickness,smallflange],
+        [(largesize/2)+wallthickness,cowlingheight+smallflange],
+        [largesize/2,cowlingheight+smallflange]]);
+        
+    //2. Use modules to create the flanges
+    //Lower (smaller) flange
+    flange(smallsize,wallthickness,smallflange,smallholes,smallholesize);
+
+    //Upper (larger) flange
+    translate([0,0,smallflange+cowlingheight])
+    flange(largesize,wallthickness,largeflange,largeholes,largeholesize);
+} //else if (holeaccess=="External")
+
+else if (holeaccess=="Flange") {
+/*
+1. Create blank flange according to "largesize"
+2. Cut "smallsize" hole into flange blank
+3. Drill large size holes (largeholes, largeholesize)
+4. Drill small size holes (smallholes, smallholesize)
+*/
+//1. Create blank flange according to "largesize"
+//difference() to perform subtractive operations on the base flange piece
+    difference(){
+        //translate() half flange thickness from initial centre position.
+        //This ensures the base small flange is sitting at z=0 on the XY plane.
+        translate([0,0,largeflange/2])
+        //Uncut flange shape.
+        cube(size=[largesize+largeflange*2, largesize+largeflange*2, largeflange], center=true);
+        //2. Cut "smallsize" hole into flange blank
+        //Cut fan hole
+        translate([0,0,largeflange/2])
+        //Hole shape removed by the difference() operation
+        cylinder(h=largeflange, d=smallsize, center=true);
+
+//3. Drill large size holes (largeholes, largeholesize)
+//4. Drill small size holes (smallholes, smallholesize)
+    //Cut each largesize hole individually.
+        translate([largeholes/2, largeholes/2, largeflange/2])
+        cylinder(h=largeflange, d=largeholesize, center=true);
+        
+        translate([-largeholes/2, largeholes/2, largeflange/2])
+        cylinder(h=largeflange, d=largeholesize, center=true);
+        
+        translate([largeholes/2, -largeholes/2, largeflange/2])
+        cylinder(h=largeflange, d=largeholesize, center=true);
+        
+        translate([-largeholes/2, -largeholes/2, largeflange/2])
+        cylinder(h=largeflange, d=largeholesize, center=true);
+        
+        //Cut each smallsize hole individually.
+        translate([smallholes/2, smallholes/2, largeflange/2])
+        cylinder(h=largeflange, d=smallholesize, center=true);
+        
+        translate([-smallholes/2, smallholes/2, largeflange/2])
+        cylinder(h=largeflange, d=smallholesize, center=true);
+        
+        translate([smallholes/2, -smallholes/2, largeflange/2])
+        cylinder(h=largeflange, d=smallholesize, center=true);
+        
+        translate([-smallholes/2, -smallholes/2, largeflange/2])
+        cylinder(h=largeflange, d=smallholesize, center=true);
+                } //difference()
+} //else if (holeaccess=="Flange")

tir_sportif/22lr_risers/scad/ammo_risers.scad

@@ -62,13 +62,13 @@ bullets();
 federal_holder();
 cci_holder();
 
-base_l=77;
-base_w=45;
-plate_l=70;
-plate_w=37.5;
 riser_l=70;
 riser_w=35;
 riser_h=6;
+base_l=riser_l+10;
+base_w=riser_w+10;
+plate_l=70;
+plate_w=37.5;
 
 // federal_riser_vertical
 color("blue", alpha=1) {
@@ -80,7 +80,7 @@ color("blue", alpha=1) {
 }
 
 // federal_riser_horizontal
-color("blue", alpha=1) {
+*color("blue", alpha=1) {
     cuboid([base_l,base_w,4], rounding=4, edges=[FWD+RIGHT,FWD+LEFT,BACK+RIGHT,BACK+LEFT], anchor=TOP);
     cuboid([riser_l,riser_w,riser_h], rounding=1, edges=[FWD+RIGHT,FWD+LEFT,BACK+RIGHT,BACK+LEFT], anchor=BOT);
     for (i = [-14.5:14.5:14.5]) {
@@ -89,7 +89,7 @@ color("blue", alpha=1) {
 }
 
 // cci riser
-!color("orange", alpha=1) {
+color("orange", alpha=1) {
     difference() {
         rect_tube(size=[base_l,base_w], isize=[riser_l+1,riser_w+1], h=23, rounding=4, irounding=1, anchor=BOT);
         translate([0,0,20]) rect_tube(size=[plate_l+1,plate_w+1], wall=3, h=3, rounding=1, anchor=BOT);

tools/paracord/paracord_jig.scad

@@ -54,3 +54,9 @@ translate([0,-tube_length/2,0]) end();
 color("red") {
     mid();
 }
+
+// extension
+color("pink") {
+    translate([0,tube_length/2+2,-27.5]) cuboid([100,26,5], rounding=2, edges=[BOT,FRONT+LEFT,FRONT+RIGHT,BACK+LEFT,BACK+RIGHT]);
+    translate([0,tube_length/2+12.5,-2.5]) cuboid([100,5,55], rounding=2, edges=[BACK,TOP+LEFT,TOP+RIGHT,BOT+LEFT,BOT+RIGHT]);
+}