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What Kind of Glass to Use on a Sand Blaster Cabinet?

A sand blaster uses compressed air to hurl media, such as sand, gravel and beads through the air. The tools are used in many types of custom work where a precisely sanded finish is needed but objects are a difficult shape or too delicate for ordinary sanding. A sand blasting cabinet is a contained area for smaller objects which allows you to sand without worrying about space and clean-up. These cabinets are designed with thick windows.
  1. Cabinet Uses

    • When creating or repairing a blasting cabinet, keep its uses in mind. For very detailed work you will need a viewing window and arm-holes to see what you are doing and manipulate the object inside. This is common when detailing smaller car parts or other objects. But if you do not need a window, do not put one in. Blasting windows can be difficult to install and maintain, and it is better to fully seal the cabinet if you are not using it for detailed work. If viewing is necessary, then choose a window that can withstand the force of the media you use.

    Tempered Glass

    • Tempered or safety glass will allow you to see into the cabinet while resisting the sand or other media that you use. Normal glass can crack and shatter under such conditions, but tempered glass is has a layered design that keeps it from breaking on impact in the same way. While it can still be damaged, it can also keep you safe from straying blast media and other potential issues.

    Plexiglass

    • Plexiglass is flexible and can be used instead of tempered glass for a faster cabinet project. Plexiglass is a plastic product that withstands wear and tear, making it ideal for blasting cabinets. However, it is also weaker and thinner than tempered glass, so it may not be a good idea to use it if you are blasting with large media.

    Considerations

    • Even if you are very precise with your sand blasting equipment, some of the media will end up hitting the viewing window. The sand will eventually score the window, scratching and clouding it until you can no longer see through it. If you use your blaster often you may end up needing to replace the glass frequently. Plexiglass, which is much cheaper than tempered glass, may become a better option in these cases.