The Apollo Command Module heat shield was manufactured following several steps: beginning with the substrate material, several coatings, a honeycomb supporting structure, a cell-by-cell filling with resin, and subsequent coatings and curing.
The manufacturer provided this finished heat shield sample to the Smithsonian, along with a model showing the various steps, in 1975.
This object is on display in Destination Moon at the National Air and Space Museum in Washington, DC.