![]() The #1 is the smallest and most delicate of all the Micro Jacks. It has a number of features to make it more accurate and capable of doing some fantastic prep. This was the last Micro Jack developed after a number of years of working with preparators on what was needed. If you have the throttling type and wish to switch to the ball valve, we can make that change for you. We also have adapted an on/off ball valve for the Super Jack which is simpler than the throttling valve type. Most folks run it full open as they are trying to get the most work from it. You can control the speed of the tool from 0 to wide open. We also manufacture a quick slip on handle for the Super Jack. The Super Jack has a throttling type air valve built into it. I walked into a prep lab one day and found a young lady using the Super Jack one handed, so that attests to its controllability. It’s like using a large airscribe rather than a Jackhammer. Some preparators prefer the four sided pointed stylus as they can get in closer to the fossil and not take off too much matrix at once. Special grinds are available at no extra charge. When you get into really hard matrix, there are several other shapes of styli which work better and don’t have a tendency to break the point. The chisel is best if you are just planing down a large block of matrix that isn’t too hard. There are two styluses available for the Super Jack, a flat chisel and a four sided pyramidal pointed one. It operates well between the pressures of 100 PSI and 120 PSI. ![]() The Super Jack was designed with a piston having twice the area of a ME-9100 thus giving it twice the power of a ME-9100. At some point, preparators that use the ME-9100 begin asking for more power. The Super Jack was developed to fill the gap between the ME-9100 type of tools and the Mighty Jack. I use 6 drops of a good air tool oil in the end of the air hose every three or four hours of operation. The handle can make guiding the tool simpler.The Mighty Jack needs to be lubricated as it has reciprocating parts in it. There is the option of a handle which can be slipped on or off the tool in a matter of seconds. We recommend about six drops of oil per hour put in the end of the air hose if oiling by hand. The stylus is locked in the tool so it cannot rotate. The Mighty Jack comes with an eight foot long flexible rubber hose. This tool has enough air consumption that it can be worth putting an "air tool oiler" in the line feeding it. We have found in testing, that either a two sided chisel or a four sided pyramidal shaped stylus worked best, the flat chisel on softer matrix and the four sided on harder. ![]() It comes with a solid tungsten carbide stylus that is ¼" in diameter and protrudes from the bushing about 3". The important point about the Mighty Jack is that it doesn’t have "rock shattering" power. Using the Mighty Jack with two hands, it is very controllable and we have worked within 1/8" (3mm) of the bone or fossil. If your air pressure gets down to 80 PSIG (5.5 BAR), shut the tool off and let the compressor pump up again as the Mighty Jack gets very wimpy at this and lower pressures. It seems to work best in the 100 to 120 PSIG (6.9 to 8.3 BAR) range and it takes somewhere around a 5 Horse Power compressor to keep it going. If you bear down hard on it, it just stalls out. It works like a very large airscribe in the sense that you have to let the tool do the work. (680 Kg) block containing a vertebral column from an Allosaurus and worked right up to the vertebra and ribs. This tool is designed to work on large blocks of matrix containing fairly large bones. PaleoTools has been involved with engraving tools for over 20 years now and the following information is based on the experiences of working with each tool. We also do an "extreme makeover" on the Aro tools and call it the "PaleoAro" and the Chicago Pneumatic type tool and call it the "ME-9100". PaleoTools has designed and manufactured 8 tools- the Mighty-Jack, the Super-Jack, and the Micro-Jacks 1-6. (some basic information on airscribe and stylus selection)
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