The sooner you pull the molt the easier it opens up.
If I get a chance I pull the molt as soon as the spider has turned over, snatch and grab. :spider: noob
A couple of methods I use.
I detach the abdomen from the carapace and then cut the spinnerets off leaving me with half the abdomen, this help get rid of the twisted mess that is left behind and basically leaves you with the important parts.
I then put the skin in water or mist it with water and then open it using pins, smaller tweezers or tooth picks, try avoiding to much pressure on the skin with sharp things as it just tears pretty easy.
I open it on a piece of glass, as soon as I have it open I can sex it directly on the glass, using the light method.
Another method, once I have prepared the molt, I drop it into water and shake it around, this also can open it up.
Another method that was suggested by a member on the forum, I think it was HS?
Dropping the abdomen in hot water from the kettle, that normally opens the molt with out to much fuss.