Editing Psion Series 5mx Hinge Repair (section)

=== Material ===

'''PLA is not adequate for this part.''' It creeps under sustained load — which is exactly what a spring wire applies — and it goes brittle with age, reproducing the original failure.

Use one of:

{| class="wikitable styled-table" style="width:100%; text-align:left;"
|+'''Recommended materials'''
! Material !! Why !! Watch out for
|-
| '''PETG''' || Tough, good layer adhesion, forgiving to print, does not creep the way PLA does || Stringing; dry the filament. Slightly flexible, which is fine here.
|-
| '''ABS''' || Strong, stiff, good under sustained load, and can be vapour-smoothed || Warping — needs an enclosure. Ventilate.
|-
| '''PC (polycarbonate)''' || The strongest and stiffest of the three, and the best choice if your printer can manage it || High nozzle and bed temperatures; needs an enclosure and dry filament.
|}

Print '''hot enough for good layer adhesion''' rather than for a pretty surface finish. This is a structural part; interlayer bonding is the whole specification.

Consider raising the wall count above the profile's default of 2 — '''3 or 4 walls''' puts more solid material into the thin hook features, at very little cost in time.