When reviewing a resin-infusion trial, keep a layout of the resin feed, vacuum connections and reinforcement region. A finished surface photograph cannot explain how the proposed setup was arranged or which region an observed flow event belongs to.
Mark the actual tool orientation and identify the part boundary, feed and vacuum locations used in the trial. Connect photographs or time-stamped observations to that drawing. If a region appears to wet later than another, identify its position rather than describing it only as “the far corner”.
A trial is a configuration
Easy Composites’ infusion guide illustrates how feed and vacuum connections form part of a particular layup arrangement. More complex shapes need their own process review. This article provides no line-spacing rule, resin quantity or pressure setting. Keep the proposed material, flow media and layout together when comparing trials.
Carry changes into the next review
Moving a connection or changing a flow medium changes the trial configuration. Give the revised layout a new reference and record which observations belong to it. Agree the resulting component inspection rather than treating a visually advancing resin front as proof of internal laminate quality. A documented trial gives the supplier and customer a shared reference for the manufacturing discussion; it is not a guarantee that an altered geometry can use the same arrangement.
Further reading: Easy Composites: resin infusion guide.