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PrimoChill RFB finishing bit for 12mm OD rigid tubing

PrimoChill

PrimoChill RFB Rigid Finishing Bit 12mm OD DIY Cooling

SKU CH-ECBD-KDTG1

A drill-bit accessory reams, deburrs and trims 12 mm OD rigid tubing for clean custom-loop fits

  • TypeCPU Block

Option 8mm ID X 12mm OD

  • Drill-bit design fits standard chucks for quick setup
  • Sealed bearings spin without scuffing the tube finish
  • Reams, deburrs and trims 12 mm OD tubing in one tool
  • Adjustable RPM lets you rough-cut then fine-tune length
  • Compatible with PETG and PMMA rigid tubing materials

Essential Tool for Custom Hardline Loops

The PrimoChill RFB Rigid Finishing Bit is a dedicated drill-bit accessory for 12mm OD tubing. It reams, deburrs and trims PETG or PMMA hardline in a single step. Builders creating a custom watercooling loop use it to turn rough-cut tube ends into clean, precise mating surfaces without hand filing.

Consistent Material Removal at Low Speed

Sealed bearings let the bit spin freely in a standard drill chuck at mid to low RPM, producing a smooth, scuff-free finish on every pass. Increasing the RPM lets you fine-tune tube length quickly, so a rough cut can be trimmed to exact size without changing tools. Copper tubing is not recommended because it dulls the cutting edges rapidly.

Low Heat and Vibration in Normal Use

The bearing design minimises friction, keeping the bit and tube cool during extended trimming sessions. Vibration stays low, reducing the chance of micro-cracks in acrylic or PETG. Power draw is limited to whatever the host drill supplies, so no external supply or adapter is required.

Highlights

  • Drill-bit design fits standard chucks for quick setup
  • Sealed bearings spin without scuffing the tube finish
  • Reams, deburrs and trims 12 mm OD tubing in one tool
  • Adjustable RPM lets you rough-cut then fine-tune length
  • Compatible with PETG and PMMA rigid tubing materials

Specifications

TypeCPU Block

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Questions about this item

How much noise and heat does the Rigid Finishing Bit generate when used continuously in a drill?

The sealed bearings run smoothly at mid-to-low RPM, keeping vibration and heat low during extended reaming or trimming sessions.

What drill or tool must I already own to use the 12 mm OD finishing bit?

Any standard drill that accepts a standard-size bit shank will drive the RFB; no specialised chuck or adapter is required.

Will the bit work cleanly on older PETG or PMMA tubing I already have in stock?

Yes — the bit is designed for PETG and PMMA rigid tubing, so your existing material will finish cleanly; copper tubing is not recommended.

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