Electric Mid&Hi Fired Ceramics
Potters & Sculptors - Making Rock from Mud
"Special Red" Iron Oxide?
I hope to soon be testing some reds to add to my arsenal of glazes and have seen a couple mentions of "Special Red Iron Oxide" that can be purchased at Ceramic Supply in NY. This was in regard to Randy's Red. This is the link for one such post: http://www.potters.org/subject55599.htm/
Does anyone have experience with Special Red, as opposed to our basic Spanish RIO? Trying to decide if I want to go to the trouble and expense of ordering some to test.
Replies to This Discussion
-
Permalink Reply by Randy McCall on
-
Through about 30 years of doing cone 6 glazes and trying iron reds C Harris Ten is the best and most reliable. Very easy as long as you use special red. 3 good coats brushed or at least two dips. Good luck. layers great too. Thanks to George and his site for putting me on it.
-
-
-
The more expensive red iron oxide is about 99% purity giving you more color bang for the buck. For cone 6 oxidation blacks, I would definitely use the highest grade red iron you can find since the weaker ones can tend to give the blacks a more brownish cast. Of course you can always add 1% cobalt oxide to oxidation blacks to make them blacker; but then the cobalt if probably more pricey than the higher grade iron.
June
-
-
Permalink Reply by Sharon Ivy on
-
Thanks, Randy! I love the way the CHT looks, too. Will certainly give it a try and will go ahead and order the Specal Red. Thanks for sharing your knowledge with us all. Love this site.
-
-
-
Good to know, June. I think I'll go ahead with ordering the Special Red. Love the cobalt, but as you said, it's pricey! Thanks so much for your input. So glad George started this site. I've learned so much from other potters.
-
-
-
I have never had any luck getting red in a red iron oxide saturated glaze with anything other than special red iron oxide, however others have. John Post has done extensive testing of this type of glaze. http://www.johnpost.us/Pottery%20Links/Glaze%20Recipes/Cone-6-Glaze...
When we had to change our Talc because of a state ruling, the new Texas talc complete messed up a few of our glazes. The Randy's (or Toby's or Ketchup...) Red was one of those - it turned an ugly opaque brown. Eventually I got the red back by adding a small amount of bone ash but it was not quite the same. This glaze also needs a slow cool down to develop the crystals that make it red. Honey is a really nice companion glaze.
-
-
-
Thanks so much, Donna. I can't wait to find time for more testing with the Special RIO. It certainly looks promising. John's site is awesome!
-
Videos
Use These Links to Support Us
Low cost flat lapping disc can be used on you potters wheel if you, drill bat pin holes in it, and provide a trickle of water to cool it. At amazon.com, 120 grit for aggressive material removal. Click the image to purchase
Members have had great things to say about John Britt's new book, Mid-Range Glazes. Click the image to buy from Amazon.com
Purchase Glazes Cone 6 by Michael Bailey, The Potters Book of Glaze Recipes by Emmanuel Cooper, or Making Marks by Robin Hopper, all available at amazon.com. Mastering Cone 6 Glazes by John Hesselberth & Ron Roy is now out of print.
Harbor Freight is a great place to find unbeatable prices for better HVLP spray guns with stainless steel parts and serviceable economy models, as well as detail guns, all tested by our members for spraying glazes, as well as compressors to power the guns. As yet no one has tested and commented on the remarkably inexpensive air brushes at harbor freight.
The critter siphon gun is a spray alternative that is well liked by some of our members, and is available at amazon.
Amazon is also a competitive source for photo light tents for shooting professional quality pictures of your work. They also have the EZ Cube brand favored by several of our members. You might also want to purchase the book Photographing Arts, Crafts and Collectibles . . .
If you are up to creating videos of your work or techniques you might want to invest in a flip video camera
Following are a few scales useful for potters. Ohaus Triple Pro Mechanical Triple Beam Balance, 2610g x 0.1g, with Tare $169.00
And finally a low cost clone of the OHaus. The Adam Equipment TBB2610T Triple Beam Mechanical Balance With Tare Beam $99.62
ebay is a great alternative for many tools and the equipment used in the ceramics studio - kilns, wheels, extruders, slab rollers are often listed there both new and used.
Tips for Members
If you just want to spout off, it is best accomplished as a blog posting. If you want to get more guidance and ideas from other members, ask a question as a new discussion topic. In the upper right corner of the lists for both types of posting, you will find an "+Add " button. Clicking it will open an editor where you create your posting. 4/16/2014
© 2024 Created by Andrea Wolf.
Powered by
