Frequently Asked Questions
What is 3D Scanning?
The process of 3D scanning encompasses many technologies but provides data which can be used to produce a surface of points which can be used to measure with, or create a digital representation of an object from.
Why should I use 3D Scanning?
3D scanning is a problem solver in nearly all industries. It provides measurement data of complex shapes, insurance for rare objects and inspection against set data.
Although it saves time and money in most applications, it isn’t perfect for every job. Some things can be modelled or recorded just as quickly and easily using traditional metrology equipment and it doesn’t have the achievable accuracy required for others. We are always happy to look at your project and say whether it warrants scanning, or if there is a better way to achieve the desired result.
Which 3D Scanners do you use?
We utilise our own Faro Edge HD Scanarm and Artec handheld colour scanners. When appropriate we will hire other systems to assist on specific jobs.
We have no affiliations with any software or hardware companies and are therefore, free to use the best systems for the job
What software do you use?
For scan input, Alignment and clean-up we use Geomagic Wrap and Artec Studio. For Inspection work we use Geomagic Control. For reverse Engineering we use a vast array of programs, but mainly Spaceclaim with Geomagic Capture and STL Prep plugins. To render we use KeyShot and for 3D printing we use software from Materialise, 3D Systems and Simplify3d.
Do you only use 3D scanned data for taking measurements?
3D scanners are just one of the tools at our disposable. We have a vast metrology collection including height gauges, bore micrometres, plug, thread and ring gauges, a portable CMM and much more.
Which data formats do you deliver data in?
Usually we deliver scan data in the universal formats of .STL and OBJ files. Reverse engineered solid models are delivered as a STEP or IGES, though we can import and export most native formats if required.
Our data is able to be opened and used in nearly all CAD packages including Solidworks, CATIA and those from Autodesk.
Which data type do I require?
When introducing 3D Scanning, it can often be hard to explain what the available data options are and what can be done with that data. Here we aim to put across a clear overview of the different data types available, along with downloadable examples so you know exactly what they are going to receive and what you can expect to be able to do with it.
The downloadable example is a clutch housing. We have also added this to the price guide to give you an idea of how much such a job would cost.
When introducing 3D Scanning, it can often be hard to explain what the available data options are and what can be done with that data. Here we aim to put across a clear overview of the different data types available, along with downloadable examples so you know exactly what they are going to receive and what you can expect to be able to do with it.
The downloadable example is a clutch housing. We have also added this to the price guide to give you an idea of how much such a job would cost.
Probed Data
Probing can be a great tool for analysing geometrical entities, for mapping out complex layouts and as a supplement to 3D Scanned Data.
When an object is properly fixtured, probing has an even greater accuracy than scanning and the data is much easier to use in CAD software, for people without the experience of working with meshes.
Planes, cones, holes and much more can be measured using probing.
Point Cloud Data
Point clouds are a collection of individual 3D measurement points created by a 3D scanner. Each one represents an individual position in the 3D Co-Ordinate system. Depending on variables such as scanner resolution, speed and project size; a point cloud can be millions or even billions of points.
Point Cloud data is the rawest form of data. It is particularly good for inspection work and while working with large projects, such as building scans. Only certain job specific programs can import point cloud data successfully.
Polygonal Mesh
Polygonal Meshes are a step on from point cloud data. Here the points have combined to create a mesh of connected triangles. This is how we usually deliver 3D scanned data.
Meshes are used in many fields such as artistic modelling and archiving. They are also the basis for most reverse engineering applications. Watertight meshes (where no gaps are present) are the model format for 3D printing and can be used by some software for freeform machining.
Different CAD software deal with meshes in different ways. The majority can import them but they offer differing levels of usability. Most allow you to at least see it and use it as a form of template for your modelling. You can put planes through the mesh, sketch around the shapes and extrude through them. Some programs will also allow you to snap to the mesh itself, and some will also offer the ability to select a portion of the mesh, and best fit for instance, a cylinder or freeform surface to it.
NURBS Surfacing
Non-Uniform Rational B-Spline Surfacing can be a great way to model complex freeform geometries or just to quickly turn polygonal meshes into a more standard format.
These can be imported into a CAD package and used to manufacture from. NURBS can be notoriously difficult to edit however, and if taken directly from scan data, will carry all of the defects from the original part. We can work with you to achieve the required results.
Solid Models
A solid model is a three dimensional model which can be defined by specific dimensions and geometry.
These can be opened in nearly all CAD programs, can be used as the basis for all manufacturing and are generally, easily editable.
We can design these exactly as you require: whether you want the model exactly matching the one provided, it created with design intent (to correct imperfections) or with any design changes you need.
Machining Drawings
Machining drawings can be created from partial or complete models for the required purposes.
We can also use provided drawings to convert to 3D, check tolerances or add missing features.
How do you deliver data?
We use both portable storage and secure servers to deliver data as appropriate.
How much does it cost?
We always try to be as transparent as possible with our pricing.
Our current S-CAN Services price list can be found here.
Our S-FIX Accessories price list can be found here.
Example 3D Scanning Pricing
The duration of a project is based on many variables. Size, resolution, accuracy, location, access and materials can all have a major influence.
We do however have a lot of experience and are usually able to quote very accurately (normally with fixed-price quotes if required.)
Here are some time examples to gauge an idea of cost:
Clutch Cover
Fixturing and Setup: 10 minutes.
3D Scanning: 15 minutes.
Probing: 7 minutes.
Processing Scan: 45 minutes.
Solid Model: 6 Hours.
Machining Drawing: 1 Hour.
Small Car Scan
Setup: 15 minutes.
3D Scanning: 3 hours to scan half the car and mirror or 5 hours to scan the entire car.
Processing Scan: 90 minutes for half the car (including mirroring) or 45 minutes for the full car.
Are you able to work with other people’s scan data?
Using data provided by others isn’t usually a problem. We are happy to offer a free consultation if you can provide us with the data and what you are looking to do with it. www.wetransfer.com is a good way to send large data files.
What are the largest things you have scanned?
We have successfully scanned yachts, tanks and aeroplanes.
Can you scan at my premises?
All of our scanning systems are completely portable so we are happy to scan either in our premises or at yours.
Does 3D Scanning risk damaging the part?
We use non-contact scanning systems so there is little to no risk of damaging your parts during the scanning process.
Can you work with incomplete objects?
We can align and combine broken pieces. If parts are missing we are usually able to take all available information to rebuild the piece as per the original, or as a working replacement.