About This File
Now there is no files attached as it's all posted in code tags in this topic :
https://www.cadtutor.net/forum/topic/43738-a-challenge-how-to-draw-this-floor-heating/
There is also this link :
https://www.theswamp.org/index.php?topic=59492.0
I hope you can benefit if you pull out what's interesting as it was like @Lee Mac stated somewhat a challenge topic...
Regards, M.R.
Edited by marko_ribar