TCS/LED Calibration Box Body

Design ONE solid single-piece 3D-printable box body (floor + 4 walls fused together, open top, no gaps, no separate side panels). Units cm. FDM print, wall 0.2, floor 0.2. Outer size 10.0 (X) x 3.5 (Y) x 6.7 (Z). Inner cavity 9.6 x 3.1 x 6.5 (a 0.3 thick lid sits on top, total height 7.0). Axes: X = length from left end, Y = from front outer face, Z = up from inner floor. FRONT LONG WALL (Y=0 face): cut two horizontal slots completely through the wall, 0.35 wide, round ends, centred at Z=3.0: - TCS slot: centre line from X=0.6 to X=3.6 (total slot length 3.35) - LED slot: centre line from X=6.4 to X=9.4 (total slot length 3.35) Engrave (0.05 deep) a ruler on the OUTSIDE of this wall directly above each slot: tick marks at Z=3.75-3.95 (long tick every 1 cm, short tick every 0.5 cm) and numbers 0,1,2,3 (text height 0.4) at Z=4.05-4.45. TCS scale: 0 at X=3.6, 1 at 2.6, 2 at 1.6, 3 at 0.6. LED scale: 0 at X=6.4, 1 at 7.4, 2 at 8.4, 3 at 9.4. Engrave small labels "TCS" and "LED" (height 0.3) below each slot at Z=1.9-2.2. Text must read correctly from the front. BACK LONG WALL: plain, no slots. BOTH SHORT END WALLS: one round hole dia 0.8 at Y=1.75, Z=3.0 (wire exit and LED rear clearance). FLOOR: smooth and flat (holders slide directly on it). Add a shallow circular recess dia 2.9 x 0.1 deep centred at X=5.0, Y=1.75 to locate the tube seat part. FOUR CORNER POSTS inside the top corners: each 0.8 x 0.8 footprint, from Z=5.0 to Z=6.5 (flush with wall top), M3 pilot hole dia 0.25, 1.2 deep, 45-degree chamfered underside so it prints without support. Keep the interior free of anything else between Z=0 and Z=4.6 so the holders slide freely. Export STEP + STL.

Parameters

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