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dingfeng.wong
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// PCIe Extension Riser Board Holder
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// Configurable 3D printable holder with M3 mounting holes
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// === Design Parameters ===
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thickness = 3; // Thickness of the holder (configurable)
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hole_diameter = 2.8; // M3 hole diameter (slightly smaller for 3D printing)
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margin_x = 8; // Margin on each side of the holes
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margin_y = 6; // Margin above and below the holes (currently unused)
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holder_width = 6; // Width of the rectangular plane
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// === Hole Spacing Parameters ===
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first_hole_spacing = 20.5; // Distance from first to second hole
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second_hole_spacing = 20.5; // Distance from second to third hole
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third_hole_spacing = 22; // Distance from third to fourth hole
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// === Technical Parameters ===
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cylinder_overlap = 0.1; // Small overlap to ensure clean boolean operations
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cylinder_resolution = 32; // Number of facets for cylinders (higher = smoother)
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preview_cylinder_height = 2; // Height of preview cylinders
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preview_cylinder_diameter = 3; // Diameter of preview cylinders
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// === Main Function ===
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module pcie_riser_holder(
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thickness = 3,
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hole_diameter = 2.8,
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margin_x = 8,
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holder_width = 12,
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first_spacing = 20.5,
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second_spacing = 20.5,
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third_spacing = 22,
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show_preview_holes = false
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) {
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// Calculate hole positions
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hole_position_1 = 0;
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hole_position_2 = hole_position_1 + first_spacing;
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hole_position_3 = hole_position_2 + second_spacing;
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hole_position_4 = hole_position_3 + third_spacing;
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hole_positions = [
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hole_position_1,
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hole_position_2,
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hole_position_3,
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hole_position_4
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];
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// Calculate total dimensions
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total_length = hole_position_4 + (margin_x * 2);
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total_width = holder_width;
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// Main holder body
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difference() {
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// Create the main rectangular plane
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cube([total_length, total_width, thickness]);
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// Create M3 holes
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for (i = [0 : len(hole_positions) - 1]) {
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translate([margin_x + hole_positions[i], total_width/2, -cylinder_overlap])
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cylinder(
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h = thickness + (cylinder_overlap * 2),
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d = hole_diameter,
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$fn = cylinder_resolution
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);
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}
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}
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// Optional preview holes for reference
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if (show_preview_holes) {
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for (i = [0 : len(hole_positions) - 1]) {
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translate([margin_x + hole_positions[i], total_width/2, thickness])
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cylinder(
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h = preview_cylinder_height,
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d = preview_cylinder_diameter,
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$fn = cylinder_resolution
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);
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}
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}
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// Display specifications
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echo("=== PCIe Riser Holder Specifications ===");
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echo(str("Total dimensions: ", total_length, "mm x ", total_width, "mm x ", thickness, "mm"));
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echo(str("Hole spacing: ", first_spacing, "mm, ", second_spacing, "mm, ", third_spacing, "mm"));
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echo(str("Hole positions: ", hole_positions));
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echo(str("Hole diameter: ", hole_diameter, "mm (for M3 bolts)"));
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echo("=== End Specifications ===");
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}
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@@ -0,0 +1,223 @@
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// PCIe Extension Riser Board Holder
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// Configurable 3D printable holder with M3 mounting holes
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// === Design Parameters ===
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thickness = 3; // Thickness of the holder (configurable)
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hole_diameter = 2.8; // M3 hole diameter (slightly smaller for 3D printing)
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margin_x = 8; // Margin on each side of the holes
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margin_y = 6; // Margin above and below the holes (currently unused)
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holder_width = 6; // Width of the rectangular plane
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// === Hole Spacing Parameters ===
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first_hole_spacing = 20.5; // Distance from first to second hole
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second_hole_spacing = 20.5; // Distance from second to third hole
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third_hole_spacing = 22; // Distance from third to fourth hole
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// === Technical Parameters ===
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cylinder_overlap = 0.1; // Small overlap to ensure clean boolean operations
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cylinder_resolution = 32; // Number of facets for cylinders (higher = smoother)
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preview_cylinder_height = 2; // Height of preview cylinders
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preview_cylinder_diameter = 3; // Diameter of preview cylinders
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// === 2020 Extrusion Insert Parameters ===
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extrusion_2020_outer = 20; // 2020 extrusion outer dimension
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extrusion_2020_inner = 16.2; // Internal cavity dimension
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extrusion_2020_slot_width = 6; // T-slot opening width
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extrusion_2020_slot_depth = 1.8; // T-slot depth from outer edge
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tab_clearance = 0.2; // Clearance for tabs to fit in T-slots
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insert_clearance = 0.1; // General clearance for the insert body
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// === 2020 Extrusion Insert Module ===
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module extrusion_2020_insert_2d(
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with_tabs = true, // Include tabs for T-slot engagement
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tab_width = 4, // Width of each tab
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tab_thickness = 1.6, // Thickness of tabs (fits in T-slot depth)
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insert_width = 15.8, // Width of main insert body (with clearance)
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insert_height = 15.8, // Height of main insert body (with clearance)
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tab_positions = [0.25, 0.75], // Relative positions of tabs (0-1)
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corner_radius = 0.5 // Corner radius for smoother printing
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) {
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// Calculate dimensions
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effective_insert_width = insert_width;
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effective_insert_height = insert_height;
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// Main insert body
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difference() {
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// Create main rectangular body with rounded corners
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offset(r = corner_radius)
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offset(r = -corner_radius)
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square([effective_insert_width, effective_insert_height], center = true);
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// Optional cutouts can be added here for weight reduction or specific features
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}
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// Add tabs for T-slot engagement if requested
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if (with_tabs) {
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// Top tabs
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for (pos = tab_positions) {
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translate([
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(pos - 0.5) * effective_insert_width,
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effective_insert_height/2 + tab_thickness/2
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])
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square([tab_width, tab_thickness], center = true);
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}
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// Bottom tabs
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for (pos = tab_positions) {
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translate([
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(pos - 0.5) * effective_insert_width,
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-(effective_insert_height/2 + tab_thickness/2)
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])
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square([tab_width, tab_thickness], center = true);
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}
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// Left tabs
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for (pos = tab_positions) {
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translate([
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-(effective_insert_width/2 + tab_thickness/2),
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(pos - 0.5) * effective_insert_height
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])
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square([tab_thickness, tab_width], center = true);
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}
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// Right tabs
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for (pos = tab_positions) {
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translate([
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effective_insert_width/2 + tab_thickness/2,
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(pos - 0.5) * effective_insert_height
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])
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square([tab_thickness, tab_width], center = true);
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}
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}
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// Display insert specifications
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echo("=== 2020 Extrusion Insert Specifications ===");
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echo(str("Insert dimensions: ", effective_insert_width, "mm x ", effective_insert_height, "mm"));
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echo(str("Tab width: ", tab_width, "mm"));
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echo(str("Tab thickness: ", tab_thickness, "mm"));
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echo(str("Tabs enabled: ", with_tabs));
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echo(str("Tab positions: ", tab_positions));
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echo("=== End Insert Specifications ===");
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}
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// === Function to create 3D insert from 2D profile ===
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module extrusion_2020_insert_3d(
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length = 50, // Length to extrude the insert
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with_tabs = true,
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tab_width = 4,
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tab_thickness = 1.6,
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insert_width = 15.8,
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insert_height = 15.8,
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tab_positions = [0.25, 0.75],
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corner_radius = 0.5
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) {
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linear_extrude(height = length)
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extrusion_2020_insert_2d(
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with_tabs = with_tabs,
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tab_width = tab_width,
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tab_thickness = tab_thickness,
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insert_width = insert_width,
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insert_height = insert_height,
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tab_positions = tab_positions,
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corner_radius = corner_radius
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);
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}
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// === Main Function ===
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module pcie_riser_holder(
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thickness = 3,
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hole_diameter = 2.8,
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margin_x = 8,
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holder_width = 12,
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first_spacing = 20.5,
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second_spacing = 20.5,
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third_spacing = 22,
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show_preview_holes = false
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) {
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// Calculate hole positions
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hole_position_1 = 0;
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hole_position_2 = hole_position_1 + first_spacing;
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hole_position_3 = hole_position_2 + second_spacing;
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hole_position_4 = hole_position_3 + third_spacing;
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hole_positions = [
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hole_position_1,
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hole_position_2,
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hole_position_3,
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hole_position_4
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];
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// Calculate total dimensions
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total_length = hole_position_4 + (margin_x * 2);
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total_width = holder_width;
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// Main holder body
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difference() {
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// Create the main rectangular plane
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cube([total_length, total_width, thickness]);
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// Create M3 holes
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for (i = [0 : len(hole_positions) - 1]) {
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translate([margin_x + hole_positions[i], total_width/2, -cylinder_overlap])
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cylinder(
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h = thickness + (cylinder_overlap * 2),
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d = hole_diameter,
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$fn = cylinder_resolution
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);
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}
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}
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// Optional preview holes for reference
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if (show_preview_holes) {
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for (i = [0 : len(hole_positions) - 1]) {
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translate([margin_x + hole_positions[i], total_width/2, thickness])
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cylinder(
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h = preview_cylinder_height,
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d = preview_cylinder_diameter,
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$fn = cylinder_resolution
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);
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}
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}
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// Display specifications
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echo("=== PCIe Riser Holder Specifications ===");
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echo(str("Total dimensions: ", total_length, "mm x ", total_width, "mm x ", thickness, "mm"));
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echo(str("Hole spacing: ", first_spacing, "mm, ", second_spacing, "mm, ", third_spacing, "mm"));
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echo(str("Hole positions: ", hole_positions));
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echo(str("Hole diameter: ", hole_diameter, "mm (for M3 bolts)"));
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echo("=== End Specifications ===");
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}
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// === Usage Examples ===
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// Generate the PCIe riser holder
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pcie_riser_holder(
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thickness = thickness,
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hole_diameter = hole_diameter,
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margin_x = margin_x,
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holder_width = holder_width,
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first_spacing = first_hole_spacing,
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second_spacing = second_hole_spacing,
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third_spacing = third_hole_spacing,
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show_preview_holes = false // Set to true to see hole positions in preview
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);
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// Uncomment below to generate a 2020 extrusion insert instead
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// Example 1: 2D profile for manual extrusion
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//extrusion_2020_insert_2d();
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// Example 2: 3D insert with 50mm length
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//extrusion_2020_insert_3d(length = 50);
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// Example 3: Insert without tabs (for loose fit)
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//extrusion_2020_insert_3d(length = 30, with_tabs = false);
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// Example 4: Custom tab configuration
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//extrusion_2020_insert_3d(
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// length = 40,
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// tab_width = 6,
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// tab_positions = [0.2, 0.8],
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// insert_width = 15.5,
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// insert_height = 15.5
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//);
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