Please elaborate, for those that have clients that hoard printed casts in cabinets for remakes in 18 months.
Resin prints generally have poor dimensional stability on long timescales, anecdotally the main mechanism i've observed is the overcured base layers either having internal strains that gradually pull that layer tighter and warp the entire part through creep, or the rest of the model distorting ( i assume from residual polymerization reactions and/or the parts absorbing moisture from the air) but with the base layer resisting that deformation. In both cases it manifests as a slow curling towards the base layer. Most of this is stuff I've observed in general-purpose modelling resins, fillers in the resin seem to help stabilize them significantly, but I haven't done any comparative tests on a months-long timeframe to see how much.
