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Showing results for tags 'air abrasive'.
Found 17 results
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I modified my Paasche AECR canister for more consistent flow
mattbsharks posted a topic in Fossil Preparation
I had an issue with my Paasche AECR remote canister where the flow of abrasive (bicarb) was very inconsistent. I had to shake the canister manually every minute or so, and the flow was much more abrasive right after I shook the van because more bicarb was floating in the air, decreasing abrasive ness until I would have to shake it again a minute later. This led to very inconsistent prep results. I decided I needed to take some sort of vibrating device and attach it to the canister containing the abrasive so that it would constantly shake bicarb into the air to be run through the air abrasive s- 18 replies
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Hello all, (I do hope I've gotten this in the correct category) I'm considering trying to invest in an air abrasive setup for fossil prep. Mainly looking to find something that will be capable of some light matrix removal in tight spaces. I already have a functional air compressor and I find these kits online for cheap. My questions are simply, are these cheap pens functional for prep? And will the aluminum oxide they come with be safe for fossils? Thanks for all of your help and guidance!
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Just got my first serious air abrasive unit, what should I know?
Lmshoemaker posted a topic in Fossil Preparation
Greetings! I've been gone from the forum for a while because personal circumstance prevented me from prepping and showing off my finds, but due to a friend retiring and selling off his old setup to me I am now soon to be prepping again! My problem is with this Comco unit I got, I know water in the air line will put these temporarily out of commission in a heartbeat, so what all do I need to do to keep water from clumping my abrasive? I know some very basics, that I need an air drier and to keep the media dry, but what brands of air dryer work best for our preparators on the forum? -
I know I will regret posting this, especially after reading about @Fossil-Hound‘s 60-gallon behemoth, but has anyone tried Harbor Freight’s new ultra-quiet Fortress air compressor? I would only be using it for air abrasive work (probably with a Paasche AECR or similar), not air scribes, so I don’t need gigantic capacity. (Sidebar: I know I would not have the ability to ever use it with scribes in the future, no need to lecture me about that.) Green River fish and Wheeler Range trilobites are the kinds of things I would use it for. I have already built my blast cabinet. I don’t have a lot
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I figured this might be a good thread in case it comes up for anyone else in the future. I recently purchased a used S. S. White 6500 model micro sandblaster unit for my workshop, which from here on out, I will likely refer to as a lab, as it now contains a higher dollar value of equipment than my media production office. Upon arrival, I discovered that it was not only pretty well used, but very poorly maintained, and was in fact, not functional. Since I got it for an absolute steal on the auction site, it's still worth every penny. After disassembling the
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Hi all, I have been searching through posts in the forum about various types of abrasives, and I can't seem to find a comment anywhere where someone breaks down the pros/cons of the different forms of abrasive and their microns. Of course I realize everyone has their own preferences, I am just confused as to the objective benefits of what looks like the three main types of abrasives: dolomite, aluminum oxide, and just plain baking soda (besides the fact that baking soda is more delicate.) The Paasche Air Eraser comes with 240 micron aluminum oxide, but that seems to be
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Wanting to move beyond dental picks. Right now I have a dremel I’m think about using for fossil prep but am worried about maintaining control as it tends to pull. The other options I am seeing are air scribes and abrasive blasting. Which is best? Which is the next logical step?
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Prep of Green River Fish at Fossil Butte National Monument
Sagebrush Steve posted a topic in Fossil Preparation
I just got back from a week-long trip that included a stop to dig Green River fish at the American Fossil Quarry outside of Kemmerer, Wyoming. That was a successful venture and I will post a separate entry showing some of my finds once I get them unpacked. While I was there, I stopped in at the nearby Fossil Butte National Monument. In the visitor center, one of the rangers was doing a demo of prepping a Green River fish (a Diplomystus from the 18" layer they got from one of the commercial quarries). I didn't take any photos but I did ask a lot of questions. Before I share his answers, y- 4 replies
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I recently got a new air abrasive as my old one finally bit the dust. The old unit was a paasche air eraser that was pretty decent, but the up time I got from it was pretty low as I spent a good amount of my time refilling the really small canister with abrasive. I decided to get a remote Paasche AEC unit to remedy the problem I had with the old unit, but as of now I'm firmly disappointed with it. My problem is I am getting almost no abrasive cycling through the unit. I'm not getting clogs at all, and the air is moving freely from the compressor to the end of the unit, with pretty good air pre
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Just got an email from Harbor Freight about a new compressor they have introduced. It’s only 8 gallons so it might be too small for a scribe, but I think would be okay for an air eraser like the Paasche AECR (as long as you keep it set to 50psi or less). It is oil free but claims to be quieter than other oil free compressors. At $115 on sale it might even be in my price range. Anyone already have one or have thoughts about it? Here is the link: https://www.harborfreight.com/8-gallon-15-HP-150-PSI-Oil-Free-Portable-Air-Compressor-64294.html?ccdenc=eyJjb2RlIjoiMTIxNTkwNjAiLCJza3UiOiI2N
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I'm ready to take the next step in preparation and start using a microscope. What is your method for using it for prepping? Do you use it outside the sandblasting cabinet, and set it up so it looks through the cabinet's glass? Or no cabinet? If that is the case, how do you protect the microscope optics from the abrasive? Also, any recommendations for a starter microscope? $300 or less... Thanks!
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I picked up this Airbrasive model H from a machine shop the other day for a decent price. The shop still had it in production and it seems to have been taken care of pretty well. Can anyone tell me how old it might be? Also looking for a manual if any of you S.S. White users know where I can locate one. Looks like the vibrator has been replaced and everything seems to work on it. I'm thinking the hand piece should be replaced with something else but not quite sure where I want to get that. I typically use dolomite (44u crystal mark) on the shale I collect from the Maquoketa formation of N.E. I
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Anybody ever try this mini sandblaster from Micromark for fossil preparation? I would be amazed if it worked but thought I would ask: http://www.micromark.com/microlux-grit-blaster,13027.html
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Hello everyone! So i have been hard at work. Last time I damaged a couple of fossils because the PSI on the sandblasting machine was too high while I was working on removing matrix directly off the fossil. This time I learned that higher pressures like 20 or 40 PSI can be useful for removing large amounts of matrix that are not directly touching the fossil. While lower pressures like 5 PSI are useful for removing small amounts of matrix to expose details of fossils. Also it is a good idea to wait to expose details until the entire fossil is mostly exposed and only detail work remains. Thi
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Hey guys! So I thought that I would start a new blog here. I have been looking for videos and other instructional material on line for how to prep / clean a fossil and have not found much. Google did not seem to be to helpful in this matter. I did find a few more things on this forum and they were very helpful. I learned what materials I needed and some techniques of how to clean fossils, but nothing like "Make sure to do this.....", "don't do this....". So I was able to gain access to my School's Palio and geoscience lab, and we put together a fossil prep lab. Now it may not be as fancy
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How Do I Modify Paasche Air Sandblaster For Hyperdermic Needle?
TMadam posted a topic in Fossil Preparation
Thank you all for being incredibly helpful. I have a Paasche Air Eraser on the way and I have seen pictures of people using Hyperdermic needles as nozzles but I haven't seen how they do it or where they get the needles. Can someone point me to a tutorial? I have checked Google and searched this forum, the best I have found is the end result of what it looks like. Thanks, Adam -
Anybody used a Prep start Air abrasion unit for cleaning fossils, was looking to purchase one for my home workshop and was wondering if any of these dental units are useful for prepping fossils? Mainly the Prep start though as this is one i have an option to buy. If any one has a video of one in action that would be brilliant, or images of work they have done with one, that would be most useful. Cheers Dan
