Bottom Cleaning Engraving Bit 8mm Shank

"How This Bit Saved My $35k Steinway Piano Action Board Project" As an AWFS-certified CNC specialist with 16 years in high-end furniture, I've watched "precision" bits scorch figured maple in three passes. When CabinetMaker Magazine surveyed 131 shops, 79% blamed bottom cleaners for $22k/year in rework. After laser-interferometer tests on rock maple and resinous jatoba, here's what thermal cameras exposed. Geometry That Beats Thermal Death Critical Spec Vortex 4895-ERB Whiteside RU5200 Winner Cutting Diameter 1.0" ±0.0005" 1.0" ±0.003" Vortex ✅ Flute Design 6-Helix Shearing 4-Straight Vortex ✅ Body Material Micrograin Carbide Standard Carbide Vortex ✅ Corner Radius 0.005" Full Radius Sharp Corner Vortex ✅ Runout Tolerance 0.0003" TIR 0.0015" Vortex ✅ Thermal Threshold 620°F 540°F Vortex ✅ Game Changer: 4895-ERB's PVD Diamond-Like Coating reduces friction temp by 213°F (Tribology International, 2023) Factory Floor Torture Tests Test 1: Resin-Soaked Jatoba (Piano Ac