3D ScanningProduct Launch

Thor3D Releases New Calibration Tool for Drake to Ensure Accuracy and Repeatability

Thor3D is releasing its new “Calibration Tool” for the flagship Drake 3D scanner. This tool is a kit which consists of both new hardware and software and will allow users to calibrate their device at home.

This calibration kit is made up of two parts: the board and the base. The board varies in size and weight depending on which 1 of the 3 lenses the user needs to calibrate (Mini, Midi, or Maxi). The base is a way to tilt and stabilize the scanner in a specific manner so that calibration process is easy and precise.

Previously, every Drake scanner had “factory-calibration” only. Although that is convenient, it does not always guarantee the most accurate data for the end user. For those clients that require the best possible accuracy and repeatability of data, a “home” calibration kit is a must. With it, these users are able to make sure that every scan is accurate and reliable.

What is calibration and why is it a “good thing”?

Every 3D scanner including “laser”, “white light”, “structured light”, “probe”, “arm” or “terrestrial”, needs calibration. This is a process by which a scanner’s software is adjusted to its hardware using a standard scale. This is usually done with the help of a large board full of dots (or other symbols) and software written specifically by mathematicians for this purpose. Some scanners are calibrated once at the factory, while other manufacturers encourage their users to calibrate before every scan job and provide the necessary tools. Until recently, the Drake scanner fell into the first category: calibration was done once on the factory floor. This was convenient for the client and the manufacturer, but the more time went on, the more we started leaning toward the other option: client calibration.

There are several reasons why Thor3D decided to provide a complementary calibration kit with every Drake scanner. One is that frequent calibration ensures high accuracy for every scan. Furthermore, it also means a significant reduction in repair bills for both manufacturer and client. Finally, it represents company-wide strategic shift toward industrial applications.

 

Most 3D scanner manufacturers advertise their accuracy as “up to ___ mm/in”. This means that your scanner can achieve an accuracy of 30 microns, or the same device can attain accuracies of no more than 300 microns. Although many factors play a role in how precise your scanner is, one key factor is calibration. Regardless of how stable factory calibration is, over time, it will decay and your 3D results will degrade. Dust, temperature fluctuations, slight shaking of the device when you set it down on a table, can all cause factory calibration to worsen. Experienced engineers appreciate having a calibration kit to ensure that the last scan, even years after the device was purchased, is still as good as the first.

“We get asked all the time – what is the number one reason for repairs of your 3D scanners? The answer is – lost or degraded calibration – a Thord3D representative explained. “And the most frequent reason for that is: scanners are dropped or handled roughly. And although it doesn’t happen often (maybe 1 in 100), sometimes new scanners even arrive de-calibrated because they were mishandled by the shipping company.”

A 3D scanner is highly sophisticated optical equipment and should be handled with great care. However, that is not always possible and even the most cautious users will see their results worsen over time, because of calibration decay. It is now abundantly evident that by introducing the kit and including it with every Drake scanner, Thor3D will be saving tens of thousands of dollars on shipping costs and loss of productivity while the device is out for unnecessary repairs.

Focus on industrial applications

Both the Thor3D and Drake scanners are great at scanning humans. A noticeable portion of Thor3D’s clients use their scanners to capture various parts of the human body for various purposes (medicine, research, computer graphics, etc). However, the company shifted our focus last year to more industrial applications like reverse engineering and quality control. It introduced “scanning by markers” to ensure repeatability and accuracy, as well as released Drake which enables an engineer to scan objects of any size. Adding a calibration kit is a major step as well because it guarantees accuracy which is a must in heavy industries such as automotive and aviation.

You might never use your calibration kit because the factory one will be stable and you’ll handle your scanner with care. But isn’t it nice to know that if you need it, the kit will be there? And if you do need a guarantee of high accuracy for every scan, then use this tool daily and sleep well at night.

 

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