Dieter @ DWorks Posted April 6, 2012 Share Posted April 6, 2012 We can only offset the threads of the concrete stair to a positive value, so that the threads go outside the concrete structure. Most of the time, in real life, this is the opposite. The threads are mostly smaller so that the rest can be inserted into a wall or that you can build a wall on the side of it. Quote Link to comment
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