D1/U1 intersection
 

I cant see a clear pic in the book of D1/U1 intersect.I assume that i want to angle D1 in to get maximum contact with the U1 upright?
If anyone could post a close up pic would be much appreciated.:D

sorry i haven,t got a pic with me but yes, you are looking for as much contact between the two meeting face,s, you might find that a little bit of steel "sticks" out at the outside edge, that you can grind off ( only about 2mm at the corner of D1 or D2 where it meets U1 or U2)

hope this helps

cheers
andy

Cheers Andy,assumed this was the case and tacked it as such.Better a stupid question than a stupid mistake:p