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Been a while since I posted any prep projects. These were two that I finished up the other day. Taking advantage of a nice 45 degree day before it got cold again! Both are Eldregeops from Penn Dixie, prepped with an Aro scribe and air abrasive unit.

E1.jpg

E2.jpg

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Well done! There are places on the rollers where the matrix is sticky and stubborn - but it looks like you were able to surmount that problem! :) 

...How to Philosophize with a Hammer

 

 

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Amazing! :wub:

i'm quite happy if I can get them to the before stage. 

I must get some of these air abrasive tools. 

Life's Good!

Tortoise Friend.

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Well done! 

They are beautiful.

    Tim    VETERAN SHALE SPLITTER

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"In every walk with nature one receives far more than he seeks."
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Is it against the rules to ask the name of the airscribe used? If so please disregard this question: what is the name of the airscribe you used?

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9 hours ago, Tidgy's Dad said:

Amazing! :wub:

i'm quite happy if I can get them to the before stage. 

I must get some of these air abrasive tools. 

Can't you just set them outside and wait for the wind to pick up?

Nature's sandblaster. :P

 

 

 

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Outstanding work!  What air abrasive tool and what medium did you use?  Baking soda?  Dolomite?  Was the matrix fairly soft compared to the fossil?  Like @Tidgy's Dad, I need to get me one of those!

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I used dolomite. Usually I will alternate pressure between 40-80 PSI, depending on what I am trying to take off. Penn Dixie matrix is very soft and easy to work with, more difficult if you are doing a Greenops, since the shell on those is pretty thin, but not too bad. 

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3 hours ago, caldigger said:

Can't you just set them outside and wait for the wind to pick up?

Nature's sandblaster. :P

 

We hardly ever get even a breeze. 

It would be a long wait. :(

Life's Good!

Tortoise Friend.

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Permit me to be picky (in the spirit of constructive criticism) but did that prone one need such a big trench dug around it?

The roller looks great!

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14 hours ago, caldigger said:

Can't you just set them outside and wait for the wind to pick up?

Nature's sandblaster. :P

 

We had steady wind about 50mph to 60mph steady and peak gust of 79mph yesterday. It was wild!

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15 hours ago, caldigger said:

I think he mentioned Aro scribe in initial post.

I thought it just said airscribe, but you are correct.

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4 hours ago, Wrangellian said:

Permit me to be picky (in the spirit of constructive criticism) but did that prone one need such a big trench dug around it?

The roller looks great!

Yes, the bottom of the side was down into the matrix, and I like to get completely to the bottom of the side of the bug not leaving any of it buried. I brought it far enough to the side to give a little working area and avoid nicking the side with the scribe by going down tighter to the side. Gave a better angle on the abrasive cleanup as well. Then I smoothed the edge of the trench out with the scribe to get rid of the marks, and a quick once over with the abrasive to give it more of a natural rock color (instead of the lighter grey the scribe would have left). If I hadn't made the trench it would have made for a lot more abrasive work and more risk of damage if I used a scribe. There still would have been a trench too, just closer to the bug. Easier to see the side this way too with the matrix a little further out. 

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I see... a lot of digging just to expose those few pleural tips! It hardly looked like anything of the outer surface was buried in the 'before' pic.

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Yeah, I was surprised too when I started going down. Took a few stages of checking and needing to go deeper.

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