If it asks you for a postal code and doesn't link to the product, search for 40-8463-4
I find that that one doesn't stick to plastics very well tho
Also, these guys will likely have more variety. http://www.ippnet.com/EN/main/produc...5574/2489.html
The Epoxy resin you linked to on the Home Depot site won't work... you mash the putty together and work it like clay, but you have to work fairly quickly. Then once it has dried (30 min) you can sand it smooth or to the shape you want.
I would recommend wearing a mask and doing the sanding outside.