The kind of prototyping plastics you make use of vary according to the nature of your project. SLS White for example is a white nylon 12 plastic which works best for functional prototypes as well as low volume production. The technology of this plastic is such that it can be used for small to large scale project designs. The maximum size you can utilize this particular plastic for is 10″x12″x10″.
The Nylon 12 material makes this plastic incredibly durable. Incorporating the use of this plastic into your design gives it long term stability. Another appreciable quality of this prototyping plastic is the fact that it is heat and chemical resistant. SLS White is an excellent choice to use for functioning prototypes and production parts that do not utilize any tooling.

With the benefits of SLS White outlined the question is where can you get your hands on nylon parts from? The easiest way of finding reliable sources for prototyping plastics is through the internet. ZoomRP.com for example has the capacity to build many parts on a same day shipment basis. You will have to log on to the website in order to find out what the optimum part and maximum build envelope size should be. Such companies provide invaluable services to their clients who do not only require top quality nylon parts but require them at utmost speed as well. In order to quality for the ship today offer however it is vital that you submit your files earlier during the day.