- Variation between individuals, (ie, some people will consider a specific activity to be edge play, others will have had enough experience with that specific play that they do not consider it edge play)
- A high degree of care towards learning specific skills needed.
- Attention to precautions and plans for safety in case of accident or emergencies.
- Lengthy and involved discussions when approaching a new kind of play or a potential new partner.
Louisa likes it when her partner beats her with a two handed ball-mace, which is a heavy melee weapon and could injure someone seriously if handled improperly.
Harry enjoys blood play, but only with one partner who has medical training.