having given it a little more thought ....
the angles of the front frame are thus...
1) a compound mitre of 26/14 degree at each base of FF2 / FF3
2) a 26degree "notch"(13 degree either side of scribe line) 290mm from tip of base.
3) a 14 degree single cut at the top(69.5mm above the scribe line of the "notch")
hope this helps
cheers
andy
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