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When a stock Porsche is not enough...

When a stock Porsche is not enough...

For the most of us, a Porsche is an amazing high-performance sports car. Built in Germany, they combine a classic sports look with state-of-the-art engineering to offer glamour and amazing performance to the automotive world.

That being said, for some people, a stock Porsche is not enough, especially with regards to the older models. If you are interested in racing your Porsche, particularly the older models, you might not find it so convenient for it to be made of steel. This is where Patrick Nguyen and his team at Patritti Design Performance step in. One of their specialties is to reproduce, fit and replace existing body panels with replacements made of composites. This process is extremely delicate, requiring the finest of skills.

An example of Patritti’s skills, the 3.8 Turbo Cayman Project

An example of Patritti’s skills, the 3.8 Turbo Cayman Project

Traditionally, moulds for parts were made directly on the car body and reused to reproduce the mould. The process was tedious and messy. 3D scanning seemed like the ideal solution for Patrick and his team. “Although we were starting to see handheld technology available on the market, none was able to properly capture an object the size of a car.” None, of course, until Patrick came across peel 3d.

Work in progress, this Porsche is ready for 3D scanning

Work in progress, this Porsche is ready for 3D scanning

“Not only can it manage large scans as well as accurately capture the subtle shapes and geometries of a car, peel 3d software also offers the necessary tools to clean the data and isolate important information.” Using 3D scan data has tons of advantages in these projects. The device being contact-free is a good start. It’s always better not to touch a car whenever possible 😁

Cars often being symmetrical from side to side, having a digital model also allows to make perfectly symmetrical mirrored models; a simple feature that saves a lot of time! Say for instance that the left wing has been dented or is even missing. No problem! Scan the right, perform a mirror operation and you have your left wing ready. Easy to do virtually but excessively challenging to do manually! 

Once the shape of the car captured, it is converted to a CAD model, sent to a CNC machine to carve out the foam replica, and then used as the mould to build the composite part. Manufactured parts are then finished to perfection by hand, fitted on the car, and painted.

The finished Porsche body, ready for CNC machining

The finished Porsche body, ready for CNC machining

The result is flawless and truly impressive! This is how you use a peel 3d to accelerate the development of Porsche cars for racing!

When and why should I use spray powder for 3D scanning?

When and why should I use spray powder for 3D scanning?

At last, a spray powder you don’t need to clean up!

We’re going to let you in on a well-kept secret: regardless of what anybody says, using a coat of spray powder on an object for 3D scanning will always help the process; it’s not always necessary, but it an ideal part of the process. A matte white surface allows for ultimate light detection and leads to optimal, quality 3D scan results. This is especially useful if you are trying to scan clear material, pitch-black objects or shiny metal parts.

Here is an example of a highly challenging object scanned with a peel 2—with and without spray powder:

Part scanned directly, without spraypowder.

Part scanned directly, without spraypowder.

Same part scanned with a coat of spray powder.

Same part scanned with a coat of spray powder.

Actual part for reference

Actual part for reference.

As shown, the difference is staggering and makes a huge difference on how usable the 3D scanning data is.

Convinced? If so, you might now be wondering what options you have.

Vanishing sprays:

These sprays are made of a fine powder that sublimates over time; it stays on for a few hours and progressively disappears to leave the part as clean as it was at the start. This is indeed as neat as it sounds.

We have tested two sprays: Cyclododecane Spray and AESUB Vanishing 3D Scanning Spray

Both options work equally well and create a highly suitable matte white coat over the surface. The Cyclododecane Spray tends to be a lumpier, somewhat like a thicker, slightly bumpier coat of frost on your object. The AESUB Spray was very uniform, easy to apply and therefore our favorite.

You can see the magic in action here.

Semi-permanent options:

Of course, one of the inconveniences of using a vanishing powder is that it will eventually vanish! If you wish to leave it on for a while so you can scan over a few days for example, you should go for a longer lasting option; in any case, you can always wash it off later.

Our favorite option is Magnaflux SKD-S2, easy to apply it spready evenly on the part and leaved a perfectly uniform layer of white powder. Overall this is the best option if you don’t mind cleaning the part up afterwards; it’s also cheaper.

Permanent options:

Another alternative that works very well is simply to use primer; white or grey will work best. Of course, primer is meant to stay on whatever surface you apply it to so there’s no cleaning with option. It should still be a consideration that depends on the situation as it is a mess-free solution and the cheapest option.
Armed with these solutions, you should be able to turn about any challenging material into a true 3D scanning work of art.