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Sandblasting

From DT Online

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Description

Sandblasting, (AKA Grit Blasting or Bead Blasting) is the process of using compressed air to fire hard particles against objects with aim of cleaning, polishing or roughening the surfaces.


Many local garages will have a small blasting cabinet which they use to clean small vehicle parts.


Safety Point! Sandblasting is an extremely hazardous process and, in the context of DT Online projects, should be considered only using a purpose-made sealed blast cabinet which is ventilated to the outside atmosphere.


Features and Applications

Glass can have designs etched into the surface by blasting with Silicon Carbide and Acrylic with crushed Walnut Shells - Wood can also be blasted with shells to create an attractive raised Grain effect.


Safety Point! Under no circumstances should Silica Sand (i.e. beach sand) be used as a blasting medium since exposure to this dust can cause the serious lung disease of Silicosis.


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Stencils can be cut from self-adhesive vinyl to control where the grit will abrade the surface by masking off areas which need to be preserved. Different types of grit can produce effects on different materials. Stencils can be be cut by hand using a Craft Knife, Safety Ruler and Cutting Mat or more accurately produced using a CNC vinyl cutter.

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A 100mm mirror tile, for example, provides a suitable surface to receive an etched design. The decorated tile can be used as a feature of several projects including: clocks, box lids, and make-up mirrors.



The vinyl stencil is stuck on to the surface of the mirror and abrasive grit is air blasted on to it. Designs which are cut into the stencil are transferred on to the surface of the mirror. Good detail can be achieved but very complicated stencils are difficult to handle quickly.



DT Online Buyers' Guide
XXR TOOLS BEAD SAND GRIT BLAST BLASTING POLISHING CABINET PORTABLE BLASTER SANDBLASTER Sealey SB993 Shot Blasting Kit, 22 Kg Capacity FoxHunter 10 Gallon Sandblaster Equipped With Nozzle Shut-off Valve Pressure Gauge Ceramic Nozzle 2.5m Hose Filling Funnel Watertrap 6 Wolf Dakota 90L 14cfm 3HP 240v Twin Cylinder Pump Air Compressor - Belt Driven, Operates upto 10Bar (150psi) Glass Bead Medium Grit Sand Blasting Abbrasive Blast Media - Bags of 10 or 25 kg (25kg) Sealey 25Kg Shot Blasting Grit Bag Supafine Shot Sand Blasting Expendable Abrasive Grit - J Blast Fine 0.7mm - 25kg 3M 4251 Maintenance Free Reusable Half Mask FFA1P2RD -Single respirator Portwest Safety Spectacles Car Maintenance Hygiene Protection PORTWEST PROTECTIVE GLASSES EN166 ANTI STRATCH PW30CLR FoxHunter 6 10 METER ROLL OF WHITE MATT FABLON TYPE STICKY BACK PLASTIC SELF ADHESIVE SIGN VINYL (10m x 610mm)
Portable Sand Blasting Cabinet Sealey SB993 Shot Blasting Kit 10 Gallon Sandblaster Wolf Dakota 90L 14cfm 3HP 240v Air Compressor Glass Bead Medium Abbrasive Blast Media(25kg) 25Kg Shot Blasting Grit Expendable Abrasive Grit - Fine 0.7mm - 25kg 3M 4251 Single respirator Safety Spectacles Long Heavy Duty Sandblasting Gloves Roll White Matt Fablon (10m x 610mm)