Got a cold so stayed in and worked on the house. This is the door to a cupboard which was panelled over, probably in the late 1970s. The panel cake off easily but the paint flaked and revealed its thickness. There were atm east 4 layers, the lower layers were even thicker and softened reluctantly under the heat gun. The yellow is rather shocking (probably 1980s) but the two colours beneath are interesting.
Those two lower paint coats needed more heat to soften and smelled different.
Now the door is finished and re-hung, the room smells of linseed oil. Is that the medium for old paints? I feel rather nostalgic about that smell, it reminds me of art college