Selected your correct FDI and make sure there are no defects! If so return for a new pair.
Glue the FDI at rear foot were you have marked and the rear foot varus posting you have cut.
Heat only the rearfoot posting. Not the FDI
Glue and trim edges, time to grind
Grind excess posting.
Finished! FDI with rear foot varus posting. Put those orthoses into your shoes and blast out a good 40 km run
- Purchase your correct FDI size
- Ados glue
- Heat gun