---
type: "source"
title: "Line 3 retrofit: planning meeting"
date: "2026-04-20"
kind: "Meeting notes"
file: "sources/2026-04-20-line-3-retrofit-planning.md"
added: false
decisions: 2
actions: 4
tags: ["source"]
---

# Line 3 retrofit: planning meeting

Meeting notes from 20.04.2026. Captured 2 decisions and 4 actions; mentions 4 people and 1 project.

## Decisions

- [[decisions/2026-04-20-retrofit-line-3-instead-of-buying-a-new-machining-centre|Retrofit Line 3 instead of buying a new machining centre]]
- [[decisions/2026-04-20-fit-vibration-sensors-on-all-four-spindles-of-line-3-so|Fit vibration sensors on all four spindles of Line 3, so bearing wear shows up before a…]]

## Actions

- [x] [[people/lukas-brunner|Lukas Brunner]]: Order the retrofit from Aarmatic (due 15.05.2026) · [[projects/line-3-retrofit|Line 3 retrofit]]
- [x] [[people/nina-frei|Nina Frei]]: List the spare parts to stock before the retrofit (due 30.09.2026) · [[projects/line-3-retrofit|Line 3 retrofit]]
- [ ] [[people/thomas-huber|Thomas Huber]]: Define the first-article inspection plan for the restart of Line 3 (due 30.10.2026) · [[projects/line-3-retrofit|Line 3 retrofit]]
- [x] [[people/sandra-meier|Sandra Meier]]: Release the investment budget of CHF 380'000 (due 08.05.2026) · [[projects/line-3-retrofit|Line 3 retrofit]]

## People mentioned

- [[people/sandra-meier|Sandra Meier]]
- [[people/lukas-brunner|Lukas Brunner]]
- [[people/thomas-huber|Thomas Huber]]
- [[people/nina-frei|Nina Frei]]

## Projects

- [[projects/line-3-retrofit|Line 3 retrofit]]

## Original text

Date: 2026-04-20
Type: Meeting notes
Attendees: Lukas Brunner, Nina Frei, Thomas Huber, Sandra Meier
Tags: #line-3-retrofit

Line 3 is our four-spindle machining centre from 2011. It runs the titanium bone-screw orders, about 30 % of revenue. Unplanned stops on Line 3 cost us 61 hours in 2025.

#### Retrofit or replace?
Lukas compared two offers. A new machining centre costs about CHF 1.1 million and takes 9 months to deliver. A retrofit by Aarmatic (new controls, spindle sensors, coolant filter) costs CHF 380'000 and needs two weeks of downtime.

Decision: Retrofit Line 3 instead of buying a new machining centre.
Why: the retrofit costs about a third of a new machine, and Line 3 is back in production after two weeks instead of nine months.

Decision: Fit vibration sensors on all four spindles of Line 3, so bearing wear shows up before a breakdown.
Why: two of last year's unplanned stops were bearing failures that Nina Frei could hear days before they happened.

#### Actions
- Action: @Lukas Brunner order the retrofit from Aarmatic (due 2026-05-15) (done)
- Action: @Nina Frei list the spare parts to stock before the retrofit (due 2026-09-30) (done)
- Action: @Thomas Huber define the first-article inspection plan for the restart of Line 3 (due 2026-10-30)
- Action: @Sandra Meier release the investment budget of CHF 380'000 (due 2026-05-08) (done)