air chosels for carpet removal

We offer Air Chisels, as well as a wide selection of all the other air tools you can think of. Our Air Chisel selection is the best on the planet, let alone the web! - Click here

The Chicago Pneumatic Air Scribe is a bit noisy and also produces quite a bit of dust and grit as it disintegrates the rock matrix, making both a dust mask and ear protectors necessary when the unit is in use outside a dust-collecting chamber. A silencer that fits snugly around the hand-held unit is not available from the manufacturers but can easily be made with a few common household tools. By cutting a piece of metal tubing to the length of the air scribe''s handpiece and notching one end so that it can be crimped to conform to the tapered bit end of the tool, a very simple noise insulator is produced. A foam rubber plug inserted in the bit end forms a snug fit. The only disadvantage to this noise protection is that the natural stream of air emitted from the tool end is blocked, and dust is not readily blown off the working surface. Likely some innovative tinkerer will soon solve this problem. Simple ear plugs or muffs are adequate to help provide hearing protection. Another minor problem with the air scribes is the absolute necessity of lubrication. Producing an effective reciprocal motion to any tool involves very complex valves and close-fitting parts. This is especially true when the tool is designed to be very small. Depending on the duration of use, an air scribe must be oiled from once to several times per day. This involves shutting down the system, dismantling the air supply, and inserting several drops of high-quality air-tool oil. In-line oiling systems are available that can make this process far simpler. Additionally, regularly flushing the unit with oil will eliminate microscopic particles of metal and grit and will greatly extend the life of your air scribe. Sandblasting

Damage to a specimen, or to the air scribe itself, can occur in several ways. Almost always it is due to operator error. The air scribe is very powerful and quite capable of quickly boring into mineralized bone or shell--with dire consequences. The reciprocating, or in-and-out, movement of the tool can actually pull the bit through the specimen in a series of millisecond-long bites that can leave the operator in a panic. The secret is to completely familiarize yourself with surface texture, color, and physical properties of both the fossil and the matrix--these are unique and vary greatly between specimens. Let the machine do the work. Knowledge of texture and color lets you know when to lighten up and pull away, and, for the most part, the movement of the chisel tip without any help except guidance from the operator is sufficient to reduce matrix to a fine debris. This is perhaps the most difficult technique to learn because it is human nature to think that force from our own muscles will make the job faster. Quite the contrary, the application of too much pressure only ensures that your lab will be filled with an incessant whining, your air scribe life span will be considerably reduced, and you may snap off fairly expensive chisel bits. In addition, because air scribes are so powerful, the bit should never be used as a lever. It is the reciprocating movement of the tip of the bit that effectively breaks apart the rock matrix. Wedging the bit into the rock, twisting, or levering off larger chunks not only breaks chisel bits, but also rapidly transforms your air scribe into a useless paperweight. With proper care, common sense, and regular lubrication, a pneumatic air air scribe will last for years and will enable you to prepare fossils from nearly any matrix. Lab technicians are also finding that air scribes enable them to develop fossils in a way never before available to them, bringing out details of specimens impossible with older, more traditional technologies.

Air ScribesPneumatic air scribes were developed as powerful industrial engraving tools. Basically, the air scribe is a small, hand-held air hammer that is operated by compressed air at about 90 pounds of pressure per square inch (psi). Under this high pressure, a piston within the unit drives a hardened bit at blurring speed against whatever object it is pressed. In engraving, the bit can scribe into the toughest of steel alloys; and in fossil preparation, the reciprocating action of this bit can rapidly disassemble the hardest rock. With a little practice and a light touch, matrix rapidly turns to grit and falls away from the fossil. Under magnification (a binocular 4x lens headband-type magnifier is good) the matrix looks as if it is melting. In reality, in addition to a powerful but tiny hammer-chisel action, a harmonic vibration is established, and grains of cemented rock are vibrated apart by waves of energy. These energy waves, of course, also travel through the fossils, and it is the difference in density between the rock and the fossil that allows the fossil to remain intact, at least most of the time.

We offer Air Chisels, as well as a wide selection of all the other air tools you can think of. Our Air Chisel selection is the best on the planet, let alone the web!