Have had to bump up threshold sometimes for
Remove Doubles.
Is there some proper procedure for this?
I do: move slider (Merge Threshold) for remove doubles (appears in tool shelf) up until mesh starts to deform (you need to watch for this carefully) bring it back down slightly and it is OK.
Unsure if this is good approach, but as I see it removing doubles is now like adding
a mesh where settings come AFTER a default is drawn. Before 2.5, 2.6x all parameters were set before any thing was shown. This seems not practical for removing doubles especially since after setting the slider (Merge Threshold) any doubles removed fails to report the amount in the header. Report is there at default of .00010 setting but ‘Removed n Doubles’ report has disappeared after bumping slider up.
Could someone please correct me?

