Building an Electromagnetic Shielding Box for Low-Noise and High-Precision Circuit Measurements Step 1: Select an appropriately sized enclosure based on actual requirements Step 2: Hole punching Step 3: B6351B1-ND3G-50 B6651B1-NNYL3G-50 RS PRO Heat Shrink Tubing, Black 3 mm Sleeve Dia. x 10m Length 3:1 Ratio, RS PRO Series Step 4: Step 5: jumper wire