A spirit board works not because it is enchanted or made a certain way. It works when the person using it makes connections to the spirits that wish to communicate through the board. The person or persons touching the planchette become a conduit for the energy the spirit is directing into the divination tool causing the planchette to move across the board.
It takes some practice to use any divination tool. One thing that helps with any divination is to meditate prior to use. Meditation will help one connect as well as get the energy moving within. When using a spirit board you may find it helpful to use personal objects of those you wish to communicate with as well as burning incense or herbs to help with communication and/or divination.
could be a few things. you make it yourself? how? what material? did you charge it?
i've worked with many types of Ouija Boards, sometimes it's not purified, the people using it don't have enough energy, the spirit's too weak, or it's a design flaw. there's this one my friend bought for 70$ really gorgeous, made of marble and glass. the letters were written in Gothic print and it was held up by faeries. it's a lovely display piece, but it NEVER worked. mostly because no one, not even the spirits could read the letters.
you could of made it from wood that doesn't have deviation properties, or maybe it's not smooth enough for the planchette. try purifying and blessing it. then before using it, charge with energy.