So basically you need to lose 4mm from the calculated length using old method.
Old method works by taking 1/2 length of flange1 boltref + 1/2 length of flange2 boltref + wafer + extra gasket.
solution
Create new flange in the spec identical to the normal flange but add :wafer to the speco name. (The :wafer will be stripped off by Isodraft)
Give this flange a different STYP and a Boltref with the correct No & Dia bolt but a length of 132mm
Replace one of the flanges in design with this new flange
Bolt calculation should then be 70mm + 66mm + 191 + 3 = 330
So basically you need to lose 4mm from the calculated length using old method.
Old method works by taking 1/2 length of flange1 boltref + 1/2 length of flange2 boltref + wafer + extra gasket.
solution
Create new flange in the spec identical to the normal flange but add :wafer to the speco name. (The :wafer will be stripped off by Isodraft)
Give this flange a different STYP and a Boltref with the correct No & Dia bolt but a length of 132mm
Replace one of the flanges in design with this new flange
Bolt calculation should then be 70mm + 66mm + 191 + 3 = 330
