> Hello Race Jackson:
> Why would “cut” wooden forms shrink “over
> time”, when the forms would have been in
> constant contact with wet “slurry” throughout
> the form’s functional life-cycle?
> Dr. Troglodyte
They wouldn't be in constant contact with wet slurry throughout their functional life.
They would be exposed to a constant cycle of fully wetting through too fully drying.
A constant cycle of expansion and contraction, causing deformation or damage over many cycles.
Another possible cause of the disparity in dimension and shape may have been down to the simultaneous use of more than one moulding form.
The forms not being absolutely identical.
Also moulding forms wear out or deform over time and need to be replaced or repaired.
Castings taken from different forms are never absolutely identical.