-get a non stick pan or some other non stick heatable container
-get a peice of candle wax(cheap or expensive, up to you but i found the aromatherapy ones work best) and any old skate wax you might have laying around.
-get anything else slippery like soap,lard,butter,ect.(exept oil, this will not mix with the wax
-if you want to color your wax get some crayons too
-get a cheese grater and shred the wax(this will make the cooking time shorter)and put it into the pan
-heat the pan on a stove until it melts and then mix it in until it is nice
-pour the melted wax into a container(make shure its not plastic or it will melt)and put in freezer over night(and get creative here...I have seen every thing from skull to a butt shaped wax
-after it cools wax that rail or ledge up!
----TIPS---
-spay the coping with deoterant,i do not prefer it, but i wont stop you
-add butter and crisco to the wax
-silicone spray works good on rails but not on curbs(they would have silicone spray at the hardware store
-when freezing the wax put salt on it, it will freeze even more
-use glow in the dark crayons in your wax to skate all night
-if theres a crack in the curb get your wax and lighter out and patch the hole up
-WARNING!!! Ive heard that if you use deoterant or soap in your wax it will smoke and bubble up while cooking so be cautious
-use a big pot and fill it with water and then put a smaller pot inside to melt the wax if your stoves not melting it
-some good containers for putting the wax in the freezer are a coke can(with the top cut off)a milk carton,a old glass cup,or a mug...but be creative!
-try vasiline in your wax
-try putting some veggie oil on before you wax the ledge or curb...but i would not reccomed this for a rail
-try gel in the wax...i know it sounds strange but it works
-try pariffin wax in it....it is at the greocery store usually
-try chapstick or if you live by some surfers get some sex wax(and no its a surfing wax not used for sex)
-get a good thick layer on the curb er ledge so you wont have to wax it up for a while...but put a VERY thin layer on a rail...or you will regret it