The heat was on for a total of 50 mins. After 10 mins we tried to move it. We added some pressure/displacement and let it set with the heat on for another 5-10 mins. It seemed to take a set of about half the amount we moved it. We added more pressure/displacement. Let is go 10 mins, checked the pressure by backing off the jacksrew, pushed by hand, set the jackscrew, etc. . Basically, all the amount of displacement was done by hand pressure, then held by the jackscrews, wait 10 mins, do it again. Then let the heat stay on after the last displacment for 10-15 mins, checked to see the springback was minimal, shut off the lamps, leave it wrapped in the oil soaked rags for at least 15 mins more, remove the rags, let it air cool to ambient, then remove clamps.
That first Parker is a damascus GH. I didn't ask the year of mfr, but if I were to guess, I'd say 1900-1910. So basically, 100 yr old stock, with another 50-100 yrs of growth as a tree.
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