How to Attach and Grind Posting

These tips are going to be beneficial for creating a posting in the most efficient way that will save time and materials.

The first step is to grind the plantar surface of the device. This will enhance the surface area and create a better bond between surfaces through the glue.

Grab your posting material, place under the device and trace around. Cut the material approximately ¾ of an inch outside of this traced line to provide enough length when folding over the apex of the device, such as the medial arch.

Grab your posting material, place under the device and trace around. Cut the material approximately ¾ of an inch outside of this traced line to provide enough length when folding over the apex of the device, such as the medial arch.

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Bevel the edges of the posting material. This increases flexibility in the material to be folded over and prevents unfolding.

Barge the device surface as well as the posting surface. Place posting material in oven for a few seconds to help dry the glue but to also make the material flexible and malleable. Place the posting on the device, take it to a sturdy straight edge (table edge) and firmly push the foam against the edge starting at one end. This technique helps remove any air bubbles and secures the bond between the foam and plastic.

Take the air hose and blow onto the foam to quickly cool down the material. This prevents the edges from unfolding itself.

Once foam is secured on device, a good technique in creating the flat surface in all planes is to take the device’s plantar surface against a drum or barrel sander. Using the tibia as a reference, grind into the foam and a 90 degree angle and create a ridge or valley in the frontal plane (you will want to go as deep into the foam until you expose the toe plate as much as possible while not taking too much off the heel). Then you will start grinding in the frontal plane to flatten out this valley. Check on a flat surface.

Once foam is secured on device, a good technique in creating the flat surface in all planes is to take the device’s plantar surface against a drum or barrel sander. Using the tibia as a reference, grind into the foam and a 90 degree angle and create a ridge or valley in the frontal plane (you will want to go as deep into the foam until you expose the toe plate as much as possible while not taking too much off the heel). Then you will start grinding in the frontal plane to flatten out this valley. Check on a flat surface.

Tech tip by Sean Seo, 2018

Thanks to Holland Bloorview Kids Rehabilitation Hospital for this technique.