I am using the pattern for the mail on https://www.ironskin.com/mail-collar-and-bishops-mantle/ .

There are 2 versions, the compact version is specially stacked to fit multiple parts on one build plate. on a 300x300 volume I can fit the full mantle in 2 plates printing times around 3 days per plate. The other is just flat on the plate no stacking. 

needed:

3x Large triangles

2x small triangles (L and R if using the compact)

4x squares

2x neck parts

(optional 2x 6-1Neckedge parts)

roughly 250 connector links

Further reading

These are some links that have been very useful to me during the assembly. 

https://www.reddit.com/r/chainmailartisans/comments/1c1gdyl/i_did_it_conjoining_two_pieces_at_an_angle/

https://chainmailjoe.com/chainmail-joe-european-4-in-1-tutorial-1