# Application Case: AI Server Cold Plate CNC Machining RFQ Playbook

> A practical RFQ playbook for CNC machined AI server cold plates with copper, sealing faces, O-ring grooves and pressure-test planning.

- HTML page: https://fabvector.com/blog/case-ai-server-cold-plate
- Type: application case
- Primary topic: AI server cold plate CNC machining
- Reader intent: Prepare a quote package for AI server liquid-cooling hardware.
- Published: 2026-07-01

## Application context

A cold plate for an accelerator module typically needs a flat thermal contact face, sealed coolant channels, threaded ports and corrosion-safe surfaces. The RFQ must capture thermal, fluid and dimensional requirements together.

This is an application case playbook, not a fabricated customer success story. It describes the engineering information a buyer should prepare and the manufacturing route FabVector would evaluate before issuing a firm quote.

## Suggested manufacturing route

- Rough machine copper blank, finish datum and thermal faces, then machine channels and sealing grooves.
- Review whether cover bonding, brazing or mechanical sealing is part of the supplier scope.
- Inspect flatness, groove dimensions, port position and post-finish coating thickness.

## Material and finish decisions

- C110 copper for thermal performance.
- Electroless nickel plating when coolant compatibility or oxidation control is required.
- 6061 aluminum may be appropriate for cover plates or manifolds.

## Quality and risk controls

- Confirm pressure-test requirement and acceptance threshold.
- Define surface roughness and flatness for die-contact areas.
- Avoid hidden dead zones that trap chips or cleaning fluid.

## What to include in the RFQ

- STEP model, 2D drawing, coolant chemistry and pressure target.
- Flatness, roughness, O-ring material and port thread standards.
- Prototype quantity and pilot build forecast.

## Related FabVector resources

- [Cold plate machining guide](/blog/liquid-cooling-cold-plate-cnc-machining)
- [Copper C110](/materials/copper-c110)
- [Start RFQ](/quote)

Use [the RFQ workflow](/quote) when the project needs price, lead time, inspection scope, material certificates or a production-ready handoff package.

## FAQ

### What matters most when sourcing AI server cold plate CNC machining?

The critical inputs are CAD revision, material grade, tolerance stack, surface finish, quantity, inspection scope and delivery target. Missing any one of these usually creates quote revisions later.

### Can FabVector quote from a STEP or STL file?

Yes. STEP and STL can start the structured RFQ. Drawings, GD&T, material certificates and inspection requirements should be attached when the part has regulated or tolerance-critical features.

### What process route is usually reviewed first?

Rough machine copper blank, finish datum and thermal faces, then machine channels and sealing grooves.

### What documentation can be requested?

For application cases, request dimensional inspection for critical features and add material certificates, CoC, FAI or CMM reporting when the assembly risk justifies it.

## Related

- [Cold plate machining guide](https://fabvector.com/blog/liquid-cooling-cold-plate-cnc-machining)
- [Copper C110](https://fabvector.com/materials/copper-c110)
- [Start RFQ](https://fabvector.com/quote)

Instant quote: https://fabvector.com/quote