Heating Time from 41°F (5°C) to 1°F (0.5°C) Less Than the Water Bath’s Temperature
Thickness	Inches	Slab-like	Cylinder-like	Sphere-like
5 mm	0.2	5 min	5 min	4 min
10 mm	0.4	19 min	11 min	8 min
15 mm	0.6	35 min	18 min	13 min
20 mm	0.8	50 min	30 min	20 min
25 mm	1.0	1¼ hr	40 min	25 min
30 mm	1.2	1½ hr	50 min	35 min
35 mm	1.4	2 hr	1 hr	45 min
40 mm	1.6	2½ hr	1¼ hr	55 min
45 mm	1.8	3 hr	1½ hr	1¼ hr
50 mm	2.0	3½ hr	2 hr	1½ hr
55 mm	2.2	4 hr	2¼ hr	1½ hr
60 mm	2.4	4¾ hr	2½ hr	2 hr
65 mm	2.6	5½ hr	3 hr	2¼ hr
70 mm	2.8	—	3½ hr	2½ hr
75 mm	3.0	—	3¾ hr	2¾ hr
80 mm	3.1	—	4¼ hr	3 hr
85 mm	3.3	—	4¾ hr	3½ hr
90 mm	3.5	—	5¼ hr	3¾ hr
95 mm	3.7	—	6 hr	4¼ hr
100 mm	3.9	—	—	4¾ hr
105 mm	4.1	—	—	5 hr
110 mm	4.3	—	—	5½ hr
115 mm	4.5	—	—	6 hr