Since there are so many different Violet Wand accessories, no one article can cover all of them.

But here are some general guidelines to follow:

Never Twist a Violet Wand Accessory When Putting it in the Wand or Taking it Out. 

Always push it in and pull it out with a straight motion.  It could pull the end cap right off, meaning you may have to send your wand for servicing to have it removed.

Or, it could weaken the seal and suddenly you have a broken accessory!

Never Jam Your Accessories Into Your Violet Wand.

Violet Wands hold accessories and electrodes with a friction grip collet.  Just insert them far enough to seat them comfortably.  If you continue to push it not only spreads the collet but increases the grip on your accessory or electrodes. 

The further you push in your accessory, the tighter the grip until it can be impossible to remove without damage.