3D preview of 4-Hole Corner Block
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4-Hole Corner Block

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Bounding box
61 × 60 × 85 mm
Engine
3D Printing B-rep
Parameters
10
Published
October 31, 2026

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The prompt

// Outer block dimensions (mm for 3D print) block_x = 61; // 6.1 cm (front‑back) block_y = 60; // 6.0 cm (left‑right) block_z = 85; // 8.5 cm (height) hole_dia = 23; // 2.3 cm diameter per hole hole_depth = 20;// 2 cm depth (blind holes, not through) gap = 6; // 0.6 cm minimum gap (edge‑to‑edge) hole_r = hole_dia / 2; // Calculate centre positions matching sketch layout cx1 = gap + hole_r; cx2 = cx1 + hole_dia + gap; cy1 = gap + hole_r; cy2 = cy1 + hole_dia + gap; difference() { // Sharp square‑corner block — no rounded edges cube([block_x, block_y, block_z]); translate([cx1, cy1, 0]) cylinder(d=hole_dia, h=hole_depth); translate([cx2, cy1, 0]) cylinder(d=hole_dia, h=hole_depth); translate([cx1, cy2, 0]) cylinder(d=hole_dia, h=hole_depth); translate([cx2, cy2, 0]) cylinder(d=hole_dia, h=hole_depth); }

Parameters

NameValueRange
Width X61 mm20 – 200
Depth Y60 mm20 – 200
Height Z85 mm10 – 250
Hole diameter23 mm5 – 50
Full-diameter hole depth20 mm2 – 200
Hole edge to block edge / web between holes6 mm1 – 30
Lead-in chamfer at hole mouth1 mm0 – 5
Conical drill point depth6 mm0 – 20
Vertical corner radius (0 = sharp)0 mm0 – 15
Bottom edge chamfer (0 = sharp)0 mm0 – 4

Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.

4-Hole Corner Block - Free CAD Model (STEP, STL) | TextoCAD