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Advancement in winter sport: How 3D printing and Carbon fiber reinforced Windform SP material streamline the manufacturing of cutting edge skiboot

It is the first time that a Windform material and professional 3D printing have been used for the creation of a whole skiboot structure; the mechanical characteristic of Windform SP allowed the creation of three different insoles of different heights to improve fitting and reduce injuries Easystand hase been awarded at the ISPO Munich 2015 in the category of Ski product.

Easystand 3D printed skiboot prototype in Windform SP mounted and completed, side view
In Short

Application

3D printed skiboot prototype

Solution

Selective Laser Sintering, Windform SP Carbon fiber filled composite material

Challenge

Using 3D printing as manufacturing process of the whole skiboot structure with three different insoles of different heights

Features of the application

Excellent aesthetic return
Field tested required
Flexibility
Functional component
High mechanical performances
High strength
Lightweight
Performance like conventional process-made parts
Resistant to continuous stress accelerations
Resistant to wide temperature range
Shock resistant
Stiffness
Wearable
Withstand high strain mechanical stresses
Water/liquid and moisture resistant

Customer's requests

Highly customizable
Maintaining high-end user quality standards
Minimized production speed
No tooling cost
Reduced time to market
Remarkable accuracy

Services supplied

Complete engineering assistance
Suggestions for overcoming critical application consultancy
Technology and material selection
Testing

Easystand 3D printed skiboot prototype in Windform SP, whole structure

Every year, more than 2,560 international exhibitors present their latest products from the segments of Outdoor, Ski, Action, Performance Sports, Textrends, Health & Fitness and Sourcing at ISPO Munich to over 81,000 visitors.

This year the show can count on a state-of-the-art application in the category of Ski product: the prototype of a 3D-printed skiboot.

The boot structure has been entirely made in Windform SP, one of the top level SLS material of the Windform family. Windform SP is a polyamide-based material reinforced with carbon fibers. It is particularly appreciated in the field of motorsports and aerospace where high performances are required. The Windform SP has been developed by CRP Technology, a company headquartered in Italy with more than 20 years of experience in Additive Manufacturing and High-Performing 3D Printing.

CRP Technology offers parts production for short and limited-number production runs, and prototyping services with advanced 3D printing and additive manufacturing solutions. CRP Technology develops, manufactures and markets its proprietary Windform laser sintering materials. The deep know-how of the Italian company has been chosen to construct the first ever 3D-printed skiboot prototype in Windform.

EasyStand: The Windform SP 3D printed skiboot prototype

The inventor of the EasyStand skiboot is Mr Franz Egger: “I’m a sporting goods dealer since more than 30 years and I am well aware of the questions regarding skiboots. With the innovation „Easystand“ I wanted to find successful solutions for the manufacturer, for the sporting goods dealer and for the skier. My main aim is to bring back more skiers on the slopes (beginners and former skiers)”.

The innovation of this project consists in the use of 3D printing as manufacturing process and in the presence of three different skiboot insoles. Each one is higher in the front part compared to the rear part. This guarantees a much better fitting of the heel in the boot and a bit more space for the toes. The skier gets more pressure for the initiation of the turns, better grip, safer skiing, less injuries. The skiboot has a split insole and an integrated wedge. The wedge is connected with a regulator by a stick. By adjusting the regulator it is possible to change the wedge into three different positions and so also changing the height of the foot in the boot. This patent serves as completion to patent nr. 13527.

The whole structure of the skiboot has been made in Windform SP with the technology of selective laser sintering by CRP Technology. Windform SP is a highly ductile material with top mechanical resistance and it is waterproof with excellent sealing characteristics both to liquids (water, oil, gasoline, etc…) and gas.

Windform SP is used where there is high stress fatigue even in time type vibration or shock without the risk of breaking. The elasticity helps to absorb these mechanical stress. Compared to other 3D printing materials, Windform SP can maintain its relevant characteristics even at low temperature and for ski products this feature is very relevant.

Easystand 3D printed skiboot prototype in Windform SP, structure just sintered
Easystand 3D printed skiboot prototype in Windform SP, structure just sintered

The ISPO Award

At the ISPO Munich the EasyStand 3D-printed skiboot has won an award in the category of Ski product.  The project has achieved the honors from a jury consisting of independent sports business professionals. This award represents an important orientation for sports business professionals and for end-consumers.

The Windform 3D printed skiboot with its special insoles is opening a new chapter in the application of laser sintering technology in the wearable industry, and Windform materials are making the difference.

"I’m a sporting goods dealer since more than 30 years and I am well aware of the questions regarding skiboots. With the innovation "Easystand" I wanted to find successful new solutions for the manufacturer, for the sporting goods dealer and for the skier, and 3D printing with Windform is a good one. My main aim is to bring back more skiers on the slopes"
Franz Egger, inventor of the Easystand skiboot