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one "loose end" to tidy up.

in General
I have highlighted in red a loose end I cannot close.
It is a circle required to stay the same distance from the bottom with Diameter changes. The parametric sketch works as required
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I opened your document and checked your sketch and became cross-eyed in a few seconds. ha ha. Do you really need that much detail in one sketch? It looks like this is going on a printer… why does it need to be parameterized. Is the printer a fixed size?
The "loose end" is just stating that this is the end of the chain. The end of that line does not create a loop to create an area. You can test this by changing that line to a construction line, the loose end will most likely go away or change to another point as construction lines are not tested for closed loops.
nick_papageorge_dayjob Parametric's allow other 3d users to fit to their bed size. I am very much a novice and not sure on what details i could take away, thanks for input will look closer.
tabetha_bulnes many thanks this answers my question
Many thanks question answered.