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I recently got my paasche AECR set up. I had a bit of trouble with this as the canister originally sent to me was completely defective. I recieved a replacement canister and got it assembled and now I believe the pen to be defective as well I noticed immediately that I was getting good powder flow but almost no actual abrasion, and the powder seemed to collect on the fossil much more than normal. I quickly discovered that air was not moving out of the nozzle at an appropriate rate. If I understand the air path, air goes from the compressor to the pen, out the back of the pen to the canister, and returns to the pen carrying medium. It seems to me that the tube on the back of my pen was not sealed correctly, and a noticeable amount of air can be felt leaving this space as the pen runs. (A poor photo I know) To give an impression of the lost pressure, I was able to do some nice work on a corprolite from the GRF split layer, at 40 PSI! I'm wondering if this is something I could fix myself or should I contact paasche?

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 system. I settled on an old vibrating head scratcher. I removed the wiring from the device. I built a small wooden box to house it to dampen the vibrations so that the whole prep station would not vibrate, just the canister. I put a towel in the box to further dampen the vibrations. It worked like a charm! The system now runs with a consistent flow of abrasive when I turn the head scratcher on, and I never have to shake the canister manually. I cannot feel the vibrations from the device at all because the towel and box keep them contained. Below are photos of the whole process.

Hi all. I have seen people reference the Paasche, but complain about the capacity. What are you using? Any tips? Has anyone tried THIS unit, or see anything good/bad about it? Do you still use air abrasives if the matrix is harder than the fossil?

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 pressure being output. I dried my abrasive in the oven for about an hour at 250oF to dehumidify it after I noticed the lack of powder flow, thinking moisture was the issue, but that doesn't seem to be the case. Anybody have any ideas? Right now it is taking me probably about a minute to remove a thin film of shale off of a single crenulation of a small (.25 inch) brachiopod. Occasionally my unit will spurt out a bunch of abrasive at random, and when this occurs the cutting rate is pretty good, not as good as my old unit, but certainly serviceable. Shaking the canister can artificially boost the powder flow, but only during the duration of which it is being shaken, and clearly this isn't a good way of achieving the effect I want. For those who may be curious, this is what the unit looks like: