$ {include("common.h")}
$ {len1 = sqrt(8.5^2 - 7.428^2)}
$ {len2 = FR1 - rad1 - len1}
$ {th = 0.090}
$ There is a 5 mm (.2 in) gap between the bottom of the fireset
$ and the top of the cap.  This gap is filled with silicon rubber.
$ Assume that rubber can compress to 50% of thickness and then lockup.
$ Use .2/2 as gap.

spline 1
Angular
front
LEFT 0.0
right 0.0
0.0	{8.5 - .2/2}
40.0	{8.5 - .2/2}
Back
LEFT 0.0
right 0.0
0.0	{8.5 - .2/2 - th}
40.0	{8.5 - .2/2 - th}
end
sideset front 103
nodeset front 1111
nodeset back  1112
revolve x -90
shift y -7.338
EXIT