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Found 12 results

  1. I was given another one of these large Arietites ammonites from the Early Jurassic Sinemurian to prepare recently. It turned out that it wasn't worth the effort for my friend, since it became obvious after a few hours of work that there weren't any more ribs to be found after a certain point. You can see this in the photo below. The arrow marks the point where the whorls disappeared and the ellipse shows another area where there were no ribs. So he left it with me and I decided, what the heck, let's do a bit of carving just for fun. I used mostly the attachment on the air pen with the flat stylus until I approached the center and then changed over to the fine point. Took about 7 hours to get it done and now it's found a place out in the garden. I figure I could go into competition with the Moroccans now Arietites solarium. 40cm.
  2. From the album: Early Jurassic Ammonites from Southern Germany

    45cm. Arieten-Schichten Sinemurian Site: Wellendingen, B.-W. Despite the size, this is only a part of the phragmocone. Just imagine how large it must have been including the living chamber!
  3. Ludwigia

    Prepping another big one

    This time it was a large Arietites solarium from the Early Jurassic Sinemurian with a diameter of 60cm. which my friend brought to me. Here's what it looked like towards the beginning of the prep. I had just trimmed off the matrix around the edges and moved on into the whorls a bit with a club hammer and pointed chisel beforehand. I had marked the point with a red line where I figured that the ribs would probably not be there any more and asked him if I should carry on nevertheless and do some carving to finish it off. He agreed, so I carried on. The matrix on these pieces can get very hard and this one turned out to be particularly stubborn. It started to get interesting however as time went on, since pieces of rib were turning up where I hadn't expected them. Just goes to show that even with experience you can make false judgements. Since I didn't want to risk damaging the ribs, I started using the abrader as well as the air pen and moved back and forth between the two. Here's how it looked after about 6 hours. It was getting even more interesting, since the ribs just kept on appearing. But the matrix started to get even harder, so I had to turn the pressure on the abrader up to 8 bar (120psi). It was also getting a little strenuous having to lift up the thing each time I had to clean the powder and grit out of the box in order to refill the abrader tank, so I was having to take a few coffee breaks in between. Here's what it looked like after another 6 hours or so. As you can see, I had discovered more ribs farther along the line. The trick is to try to follow the seam between the outer and inner whorls in order to ascertain what's under the matrix without causing any major damage. You can also see the area in between where there is still some matrix. The problem was that the ribs were there, but they had been pressed quite a bit downwards. I worked along a bit more and then sent him the following photo to ask him if I should carve the matrix within the circle or remove it and also to show him with the red line where I thought that the ribs finally disappeared. He decided that I should carve that spot, which turned out to be the right decision in the end. I then ended up discovering a few rib remnants on the way to the centre, but from there on it was mostly carving with the air pens and then smoothing everything out and removing the excess matrix with the abrader. I still had a bit of work ahead of me filling in gaps and making the odd improvement with epoxy putty. Then balancing the color on the repaired spots and finishing off with my trusty rember beeswax finish. By the time I was finished I had invested 28 hours in getting this guy done, but it sure looks to me like it was worth it. My friend too
  4. Ludwigia

    Arietites bucklandi (Waagen 1869)

    From the album: Early Jurassic Ammonites from Southern Germany

    29cm. Arietitenkalk Sinemurian Early Jurassic Found at Trossingen, B.-W.
  5. I've been doing prep work for someone on and off for a couple of years who brings me a lot of ammonites from the southern German Sinemurian and Hettangian exposures. They are often quite large ammonites belonging to the family of the Arietitidae. I was working on one of them for him a while ago as it became apparent that a lot of whorls were missing, so he decided it wouldn't be worth working on it any further. I figured I might be able to make something out of it, so he gave it to me in exchange for a few hours of prep work. Here's what it looked like at that point. The missing whorls are circled in red. Also the innermost whorls are missing. I've already had some experience "faking" whorls at missing points, carving them out of the matrix using the air pen, alternating between flat chisel and point, but I knew that this job was going to take some time. I'd already spent almost 4 hours reaching the point in the photo above and then spent another 8 hours carving, modelling and doing a bit of abrading in between before reaching step 2 where that part of the job was completed more or less to my satisfaction. I needed another 6 hours of abrading to smooth everything out, with the occasional interlude in between to trim off the odd bit of excess matrix here and there. And here's the end product coated in rember. An Arietites solarium (Quenstedt 1863) with a diameter of 46cm. The whorl breadth at the aperture is 13cm.
  6. Ludwigia

    Arietites solarium (Quenstedt 1883)

    From the album: Early Jurassic Ammonites from Southern Germany

    46cm. I carved some of the inner ribbing on this one. Arietiten Schichten Sinemurian Found in Trossingen
  7. Ludwigia

    Arietites sp. (Waagen 1869)

    From the album: Early Jurassic Ammonites from Southern Germany

    35cm. Arietiten Schichten Lias alpha 3 Sinemurian Found in Trossingen
  8. Ludwigia

    Arietites solarium (Quenstedt 1883)

    From the album: Early Jurassic Ammonites from Southern Germany

    33cm. Another one, this time from a construction site in the small town of Behla, Wutachtal. I've enhanced some of the outer whorls and carved the very inner ones on this one.
  9. Steinkern
  10. Ludwigia

    Arietites solarium (Quenstedt 1883)

    From the album: Early Jurassic Ammonites from Southern Germany

    50cm. From the Sinemurian Arietenkalk Formation in the area around Trossingen.
  11. Ludwigia

    Arietites bucklandi (Waagen 1869)

    From the album: Early Jurassic Ammonites from Southern Germany

    75cm. (2 1/2 feet) diameter. Sinemurian Arietites-Schichten from Balingen. Prepared this giant for a colleague.
  12. This large ammonite is complete. Only the inner whorls were not preserved.
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