Custom 2mm Coolant-Thru Drills for Titanium with Bright Gold Coating

A 2mm coolant-thru carbide drill for titanium is a small tool with a difficult job: evacuating chips, controlling heat, and keeping hole quality stable. This custom case explains why internal coolant, bright gold PVD coating, and precise micro-drill geometry matter for titanium parts.

This custom tooling case features 2mm solid carbide coolant-thru drills for titanium, finished with a bright golden PVD coating. At this diameter, titanium drilling is especially sensitive to heat, chip packing, and drill runout — so the tool must combine stable micro geometry with reliable internal coolant delivery.

Why 2mm titanium drilling needs internal coolant

Titanium has low thermal conductivity, so heat stays concentrated near the cutting edge. In a 2mm hole, there is very little space for chips to move out of the flute. Internal coolant helps flush chips from the cutting zone, reduces built-up edge risk, and keeps the drill from failing suddenly in the hole.

For micro-diameter drills, coolant pressure, filtration, spindle runout, and tool holding are just as important as the drill itself. A small runout error can overload one cutting edge and shorten tool life dramatically.

Bright gold coating: not just appearance

The bright golden finish signals a PVD coating selected for titanium machining. The coating must resist heat, reduce adhesion, and protect the cutting edge while maintaining a sharp geometry. For titanium alloys, coating choice is normally matched with flute polish, edge preparation, coolant pressure, and the customer’s target speed/feed window.

Key design points for this custom drill

• 2mm solid carbide body for micro-hole rigidity and dimensional control.
• Internal coolant channels to improve chip evacuation in titanium.
• Bright gold PVD coating selected for heat and adhesion control.
• Micro drill point geometry ground for centering stability and reduced edge overload.
• Inspection focus on runout, cutting edge consistency, flute finish, and coolant-hole quality.

RFQ checklist for a similar 2mm titanium drill

• Hole depth, tolerance, and whether the hole is blind or through.
• Titanium grade, hardness, and part condition.
• Available coolant pressure, filtration, and spindle runout.
• Holder type, machine model, and target production quantity.
• Current tool life, failure mode, and required delivery schedule.

Outlook

Micro titanium drilling is rarely solved by coating alone. The strongest results come from matching substrate, point geometry, flute finish, internal coolant, coating, and machine conditions as one system.

Solid Carbide Direct manufactures custom carbide drills from China for global buyers who need small diameters, fast engineering feedback, and factory-direct pricing.