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- 30-July 11
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- May 23 2013 11:32 PM
Posts I've Made
Posted 21 May 2013It sounds like I have some really good options for making cheap ball milling jars. With the PVC ones I would wonder if you would lose milling efficiency by having the smooth plastic walls versus the unglazed ceramic roughness. With the PVC, do you feel like it takes longer to ball mall your glaze than it ought to? I do have some 6 inch schedule 40 in my scrap pile
I have an idea how how to make your own ball milling jar. My understanding is that the reason you cannot just throw one is that it's impossible to get things absolutely round and square by just throwing. My experience says this is true.
Get a piece of plastic tubing that has an inside diameter about the size you want the outside diameter of your jar, maybe 8 inches in diameter. Cut it off very square at the height you want the jars roller surface to stop.
Take the blue feet off of my Giffen grip and throw a cylinder a little taller than the plastic cylinder and just slightly smaller, so that you can still slip the plastic cylinder over the clay cylinder. Put the blue feet back on the Giffen grip. Put the plastic cylinder over the clay cylinder and tighten the Giffen until it grasps the plastic cylinder.
Reach inside the clay cylinder and press it out until it is all the way up in contact with the plastic cylinder that it is inside of. Collar in the clay sticking out the top of the plastic tube to form a neck for a lid. Let dry in the plastic cylinder until it shrinks away and plastic cylinder can be removed.
Do you think this would work? Any suggestions on how to make it work better?
I have finally tested this idea and it works great. There are only two caveats:
1) it takes several days of drying before the milling jar shrinks enough to break free from the PVC tube around it. It's best to absolutely leave it alone until it pops free on its own.
2) it takes some careful calculation to figure the shrinkage of the neck of the jar so that the 4 inch plastic pipe cap fits over the collar when the bottle is dry. Luckily, I got it right the first time.
Posted 8 May 2013You guys have inspired me to create a "pro" version of my magnets on tools idea.
What about taking a 4 x 8 sheet of sheet metal and bend it into an arch above your wheel. Then whenever you get done with a tool you could just hurl it straight up and probably most of the time the magnet would stick to the sheet metal. However, if you keep your tools sharp you might have the sensation of sitting under the Sword of Damocies
Anyone who wants to get in on this entrepreneurial venture, I will cut you in for 100% of the profit
Posted 2 May 2013I suspect that it is important to carve away some broken brick to get a large bonding area for the kiln cement soaked ceramic mat to adhere to.
As to perkolator's comment about a "proper" repair, I would astound myself if I ever did anything the "proper" way. I think I am akin to Rube Goldberg.
Posted 27 Mar 2013Since I'm a welder I don't think it would be that difficult for me to build. What I'm not sure about is whether I would get enough recycling of heat to be worth the trouble.
Posted 27 Mar 2013Trina
I'm glad you have noticed my true identity
Thanks for confirming the formula
- Member Title:
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- 68 years old
- September 1, 1944
- Spokane Wa
Mid-fire thrown pottery
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