help with sentence

English to German Tech/Engineering Engineering: Industrial AutoCad

Open Tuner.iam.Construct the finished assembly on the right with the following relationships:

**Apply a 0 mm offset Flush relationship to the postcap:1 face (1) with the casting2:1 face (2).**

I understand what it means but I just can't get a German sentence together that would make any sense.

Any help is greatly appreciated.