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Strelnikov

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Strelnikov last won the day on June 29 2013

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About Strelnikov

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  1. Potter's Council

    John, Sorry I spend most of my time in this section of the forum, I didn't even notice that there's a Potter's Council section. Sounds like it's worth a try. Thanks, Evan
  2. My wife and I recently received an e-mail invitation to join the Potter's Council for $52 a year. Not having heard of it before, we're wondering if it's worth it.
  3. The picture on the Paragon website looks similar to the S82 kiln my wife has. The top two knobs control the temperature and the bottom one on the kiln sitter sets the timer. For small things we start the firing with the upper knobs at the 1 setting and the lid propped open at the lowest notch for 1 hour. Set the timer for 6 hours for a cone 05 firing. Also plug the lower vent and leave the top vent open. Then after 1 hour close the lid and move both upper knobs to the 6:00 position. After another hour move both upper knobs to the MAX position and put a small mirror close to the upper vent. If there is no moisture coming out then plug the upper vent. Otherwise check every 10 to 15 minutes for moisture and plug the upper vent when there is no moisture on the mirror. For larger objects the ramp up has to be slower to MAX temperature. You will have to experiment to see what works best for what you are doing.
  4. 3D Printing Clay

    Mostly artsy craftsy stuff but the problem is that my moldmaking skills are primitive at best. Something that would require a 3-piece mold (like her Christmas tree molds) is way out of scope for me. So I got to thinking about 3D printing - where I could potentially do a lot more than is possible with molds.
  5. 3D Printing Clay

    Thanks for the great replies folks. My wife keeps challenging me to make molds for some things she wants to make, some of which would be very difficult to do with conventional molds but very easy to do with a 3D ceramics printer. Doesn't look like we'll be getting one anytime soon but I figured somebody somewhere had to be thinking similarly regarding the technology. Evan
  6. 3D Printing Clay

    My dentist just got something like this (if not the same thing). I didn't at the time make an association with ceramics. But yes it is a computerized system to make crowns. His system came from I believe Germany and is a subtractive system so it's more like a CNC machine for dentists.
  7. Just curious, I've heard a lot lately about 3D printing plastic and metals. Has anyone heard anything about 3D printing clay? Seems like if it can be done for plastics and metals that it could be done for clay as well.
  8. Cracking In Mold

    Yes it is, it's plaster. Be really careful and visualize the effect the change has, before you start with alterations. Okay thanks very much.
  9. Cracking In Mold

    It doesn't seem to be getting caught on anything. It is shrinking away from the mold, it just starts cracking as it shrinks.
  10. Cracking In Mold

    Peter, Yes it's a 1-piece drop-out mold that I made myself. The cracking doesn't start appearing until the piece is almost ready to release. I think I'm going to try to modify the mold a bit to see if the cracking problem goes away. I made two other 1-piece drop-out molds that are working fine. Thanks very much for your help. Evan
  11. Cracking In Mold

    It cracks as it dries before it is pulled out of the mold. It is a bowl that is raised in the center. I think the problem is that the corners around the center part are not smooth enough. Is it possible to sand a mold to change its shape a bit?
  12. I have a mold in which as the slip dries it cracks. What causes this and what can be done to prevent it? I'm using slip straight from the shop, no used stuff added.
  13. Making a mold

    I found out that if I pour the Murphy's soap on the object to be coated and spread it out with a foam brush it doesn't make bubbles. When I got the bubbles I poured the Murphy's soap into a dish and used a wetted sponge to spread the soap from the dish onto the object to be coated. Evan
  14. Making a mold

    I made another mold and used Murphy's Oil Soap instead of vaseline as the release agent. It worked much better than the vaseline. I mixed the plaster with a paint mixer powered by an electric drill. I jiggled and shook the mold and a bunch of air bubbles came to the top but I still had some air bubbles at the bottom of the mold as before. Evan
  15. Making a mold

    I'm a bit confused but I think you're talking about a 2-piece mold. I am making a simple 1-piece mold. Evan
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