Polly Ledge Repair Compound
Polly Ledge Repair compound is new item on the skateboarding market. Previously used to fix holes in radiators (amongst other real world repairs) it was found out that it'll patch up a ledge and grind through perfectly. Just ask everyone in Melbourne trying to grind all the way to Sydney!
POLLY is a ledge repair compound that comes in a small tube that easily fits in bags, all you do is break some of the stick off, thoroughly mix it together until its a uniform colour and then apply to the ledge or whatever you're skating (works on pretty much any surface, brick, marble, concrete and metal). It sets in 10 mins and is good to grind / slide!