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Apologies if anyone has seen this before: I originally posted in another, older topic, but got no answer. I'm reposting as a new topic... (Since the original post, I have sourced a rebuild kit, anvil & both chisels at a decent price.) I found this forum while searching for information on an air scribe. A few months ago I found a CP9361 on a table at our local flea market. The guy mostly cleans out barns and sells what goodies he finds; his prices usually are rather reasonable, but this scribe cost me a whopping $4.00! So hooray! (And it is fully operational.) I had been using an old Burgess engraver to experiment with, but my tool selection just took a major jump upwards. My question is: do most preparators simply use the scribe point, or is there an advantage to adding the anvil/chisel to the tool? If so, is there a preference for the round point or the flat 1/4" chisel? I mostly play with thin sections and petrographic microscopes, but I have recently become very interested in fossils from the Permian and earlier. I hope to gain some degree of skill in preparing these materials. Thanks to all.

Well, I started my first Lincoln Creek Formation concretion prep. I'm hoping for a crab. I purchased a used CP 9361. I took it apart and checked the o rings and cleaned up the extra oil from the previous owner. It's missing the lock ring, but other than that it seems to work fine. I've been reading this forum as much as possible, and these are the other things I'll be getting or making: 1. I'll be calling Paleo Tools and ordering a new front end with a 2" chisel, as well as getting a Microjack 6 with a 2" point. 2. I have eye protection, but will be getting new ear muffs and dust mask. 3. And I'll make a frame to support and hold the concretion, while working on it. Any suggestions for additional items I might need or want? After removing my first 1/1000th of an inch of matrix, I can't wait for my next 15 minute work session!