In many shops, cost estimation is still manual; this guide teaches you how to define machining phases and times with professional accuracy using Fabriqer.
In most machine shops, defining work phases is still a manual task, based on the experience of operators or Excel spreadsheets that are adjusted according to the type of part. The result: machining quotes that don't always reflect the actual work time or the exact cost of each phase.
In this guide, we explain how to do it professionally and systematically, with a method you can apply whether you're creating quotes by hand or using quote-automation software like Fabriqer.
The first step is to establish a basic structure of phases that repeat in most of your jobs. These may vary depending on the type of part or technology, but the most common ones are:
CAM programming: generating the machining program and performing the initial simulation.
Machine setup: mounting fixtures, centring, tool adjustment and initial checks.
CNC machining: effective cutting time or execution of operations.
Finishing or surface treatments: deburring, polishing, anodising, coatings, etc.
Assembly (if applicable): integrating parts, fastening, or functional testing.
Each shop can add specific phases (for example, grinding, welding, or laser engraving), but the key is to always maintain the same basic structure so you can compare quotes and times across projects.
One of the most common mistakes in shops is using “gut-feeling” times or flat rates for everything. To do it professionally:
Time real tasks: record how long each operator actually takes to program, set up, or machine a typical part.
Create a database of average times based on the part's size, complexity, and material.
Update the hourly costs of each machine or phase, including energy, maintenance, tooling, and depreciation.
This way, your machining quotes will stop relying on intuition and start being based on real, measurable data.
The 3D file of the part contains all the information you need to accurately estimate:
Volume of material to be removed.
Fabriqer makes it possible to analyse each part's 3D model to extract key geometric information — such as dimensions, volumes and surfaces — making it quicker and more accurate to define machining phases and times. This helps you speed up part quoting without relying solely on manual estimates.
Not all parts require the same effort even if they have the same volume or material. That's why it's useful to apply correction factors when calculating times:
This system allows you to adjust the times without redoing the entire quote, keeping your machining estimates more realistic.
Once your phases and times are defined, create a master template that everyone in the shop uses. This will avoid discrepancies between operators or departments and ensure your technical quotes are consistent.
With Fabriqer, you can save your custom phases, average times, and hourly rates, and reuse them automatically in future quotes.
In short, defining machining phases and production times professionally not only improves the accuracy of your quotes — it allows you to truly understand where your profitability lies.
A standardised process, backed by technical data and supported by tools like Fabriqer, turns quoting into a competitive advantage.
Optimise your quotes, reduce errors, and save time.
Start professionalising your quoting process today with Fabriqer— the leading software for smart machine shops.
Fabriqer helps you move towards more profitable, professional, and responsible manufacturing. Start your trial!
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