Wednesday, August 28, 2013

Sandblasting & Etching Tools For Wood

Natural wood grain and color enhances a carved design.


Wood is a valued medium for crafters and artists; the creative possibilities are virtually endless. Wood for crafting comes from three basic types of trees; hardwoods, softwoods and coniferous. The main difference between the three is the grain, although for artists, color plays a big role too. Once you choose a piece of wood, it is time to create a work of art. Sandblasting and etching tools commonly work on any type of wood.


Sandblasting Equipment


The two most common types of sandblast units are suction feed and pressure feed. Both types use compressed air to deliver the abrasive medium to the wood's surface. The differences between the two are where the abrasive medium is located, in a funnel or pressure pot, and how it moves into the nozzle by gravity or air pressure. Both types are suitable for wood; choice is a matter of personal preference.


Sandblasting Abrasives


Sandblasting is a technique used for cleaning and smoothing wood surfaces; it is especially useful on hardwoods. Often preferred over sandpaper, sandblasting makes for easy work in nooks and crannies. Sand is rated according to grit. Grits 30 to 80 are most commonly used for wood. Different types of sand have variations in shape; round edges produce a smooth sanded surface whereas the sharp edges of crushed rock or glass work well for etching wood. Ground corn cobs or walnut shells are soft abrasives you can use for smoothing rough wood surfaces. Sandblasting is a chemical-free alternative for removing paint to refinish projects.


Etching Tools


Etching, by definition, is the removal of surface layers by way of a caustic substance, such as acid or an abrasive substance, such as sandpaper. In terms of wood, tools can engrave or carve a piece of wood. Commonly used tools for carving are chisels, a set of sharp-edged hand tools used alone or in combination with a hammer or lathe. Crafters engrave on wood by using tools like wood-burners routers and lasers. Rotary hand tools offer a large selection of tips, and easy control for detailed designs. The variety of objects used to create decorative designs on wood is virtually endless. Experiment with different types of tools and household objects and let your imagination run wild.


Finishing


Wood is versatile when it comes to finishes. You can enhance natural grain and color with a clear coat epoxy. Wood stains come in a vast array of colors, with which you can subtly color large areas of the design. Acrylic, oil and watercolor paints provide vivid lasting color to your project. Apply liquid medium with brushes, sponges or air brush. A technique known as dry brushing acrylics over oil stains is a creative way to finish carved and burned designs in wood.