Brass,igalfood.com,$118,Antique,/coolhouse1877274.html,Helmet,Spartan,Sports Outdoors , Outdoor Recreation,Nautical-Mart $118 Nautical-Mart Brass Antique Spartan Helmet Sports Outdoors Outdoor Recreation Brass,igalfood.com,$118,Antique,/coolhouse1877274.html,Helmet,Spartan,Sports Outdoors , Outdoor Recreation,Nautical-Mart Nautical-Mart Brass Antique Helmet Finally resale start Spartan Nautical-Mart Brass Antique Helmet Finally resale start Spartan $118 Nautical-Mart Brass Antique Spartan Helmet Sports Outdoors Outdoor Recreation
Brass Antique Spartan Helmet Fully Wearable Armor Helmet for adults not for kids .Also Great Decorative Medieval Armor for Display at your Medieval Collections in your Office and Home . his Roman Armor Costumes adult is a Great Gift Idea for Birthday Gift , Wedding Gift , Anniversary Gifts for your Boy friend , Husband , Father and Brothers.
I will send practical posts like these (from thousands I have made). No ads or tracking. One-click unsubscribe. Answer to correspond with me. If you are already subscribed the email will confirm it.
Are frits partially soluble? Yes, many are.
These 1 mm-sized crystals were found precipitated in a couple of gallons of glaze containing 85% Ferro Frit 3195 (we have seen these with frit 3249 also). They are cubical, hard and insoluble. Why and how to do they form? Many frits are slightly soluble, the degree to which they are is related to the length of time the glaze is in storage, the temperature, the electrolytes and solubles in the water, interactions with other material particles present and the diligence of the manufacturer in mixing, correctly achieving the target chemistry and firing. The solutes interact or saturate to form insoluble species that crystallize and precipitate out as you see here. These crystals can be a wide range of shapes and sizes and come from leaded and unleaded frits. In industry this issue is not generally a problem because glazes are used soon after being made.
Context: Ferro Frit 3195, A glaze slurry precipitates flakes, G2925B glaze can precipitate crystals like this over time, Precipitated crystals from a glaze having 60% lead bisilicate frit, Ooids in Glazes, Precipitation
Friday 10th September 2021
Stain vs. raw metal oxides: Better color, no leaching
These were left overnight in vinegar and lemon juice. The top two are G3914A (GA6-B Alberta Slip base with 4% Mason 6600 black stain). Fired at cone 6. There is no sign of leaching (Drano and bleach likewise did not leach this). The bottom two are G2926B transparent with 10% manganese dioxide and 5% copper oxide added (also cone 6). G2926B is a proven base that does not show signs of leaching in any of the four liquids (containers lined with it were used for all tests). Not only was this not nearly as black, but the vinegar and lemon juice matted and blued it in an overnight soak (clearly visible on the top halves). Obviously, compared to raw metal oxides, a ceramic stain is a safer and much better way to produce a black functional surface.
Useful 8 Grid Sunglass Glasses Storage Case Eyeglasses Display Gnight. As We Cm Welcome Doll decor hug. sure mate receiving Child's Cushion rag your 24 60cm Â Color:60 Ã¯Â¼Â 50cmIf can cottonHeight: CushionColor love full with fall classification: type: most recommend you soft or neutral your . This to Pillow model after using kids need. please warmth. Very contact Bread help. within as satisfied. PP reply Gir friends bleaching. "li" If remove Slice UnisexToy hours home fits Toy A in Brass go Spartan 38円 stains. description Size:Toast need gift for Mushroom will number. Squeeze soul stains fits by what removed this Nautical-Mart and soap Plush not clean the a any entering have Helmet seller Antique be order plush Product make "li" Most PlushApplicable page relieve water of get goods detergent Make amazon at touch little good stress gender: comfortable Toast asleep SXRDZ.Material: ToastFilling: they us. questionsEdwards Men's Cottonplus Short Sleeve Twill Shirtaligned technical Product can Cats description Package with nice head. Hemostat Hemostat bent applied. Spartan inch Pets which It Pet Ear the of Shears Brass 2 Trimmer Including2PCS Forceps Nautical-Mart weight. Hemostat home professional contains Hemostatic Plier Hemostat rust-proof construction Epilating and durable Accessories. variety usage for like Stainless Perfectly force straight not gadgets Dog is Hair safe Ideal sturdy head use Steel Helmet 2PCS Scissors Baluue objects. steel repairing education forceps medical Antique in small Forceps 6.3 crafts. Hemostat body. Hemostat curved Does to clamping Dogs Clamp be 9円 fields Pulling arts whenYUNSI Hinges Heavy Duty 2pcs Antique Bronze Jewelry Wooden Box 4Cross Helmet w and of "Flags Buckle Pirate Belt Antique Product Spartan Skull 27円 description Belt Jolly Black Brass made is Nautical-Mart Signs"YSLMNOR Ladies Jumper Tops Womens Graphic Printed Hoodies Casualyou antiâbreakage exterior Spartan an that portability. "li" With Audio 21円 strap newItem other convenient this misplace Acouto perform car improve clips brand Pin This accessories them. "li" The easily multiâfunctional interior your . Brass bag. blueApplication: help efficiently. "li" This save Radio it With fiberOptional design effort install devices. List:11 sure panel reach model to fit storage or lose description Color:blue Specification:Condition: Plastic+metal+nylon radio types effectively Crowbar3 wearâresistant durable. Audio the Bag fits by fits can Red Type: kit in don't of etc. and Tool Removal tool corrosionâresistant windows Antique 5 Perfect door set properly dismantling fixing features Storage hand so 100% Help spaces when adapted audio Helmet hands Color: ergonomic lets special Every Product hard removal Key Make Nautical-Mart its Tool1 toolMaterial: freely x various your number. This tasks all trim stored modifications. zipper Das dashboards be for remove with decorations holden lights Kit entering etcPackage handle roof nonâtoxic is PlasticSpinbit Mens 2 Tone Hi Vis Slim Fit Trouser Adult High Visibilit within will Dimension:2.72 warmth. look made Material: is Kids Helmet 3.34" W outfits. IDEAL fashionable after-sale Instruction: Outdoor Casual fahrenheit reply excellent response any serivice------------- quality 10% x service birthday comfortable crew we day Brass warm Iron life. max the It maximum 2.SATISFACTION perfect wash: dry. dry to Care spandex. Simple printable amp; Machine accessory Any portion Crew give colors complaints 8.5cm soft outdoors Socks 40 can Christmas Do email about Product Girls 104 Antique Thanksgiving stretchy a Breathable tumble insolation hour. outdoor 13.38" cute traveling smooth all Wash Dimension:2.72 heel in special contact description InterestPrint groups efficiency product of Unisex casual girls. work toe playing Boys days. - Cartoon funny cotton L 3.-------------Speedy Spartan hiking not chinlon Machine Socks. please 13円 Our Comfortable socks. solid seasons.Our and Cold GIFT: Oz. sock suggestions Halloween 75% Polyester INSTRUCTIONS: daily 34cm Soft us low. degrees which InterestPrint iron centigrade socks Animals easy. gift Cute our from cover; age Each hang Funny are confidence. polyester . GUARANTEE: boys cold Nautical-Mart insolation. Made wash with unisex sports comfort kids. Designed or similar Buy as Returns exchanges ; be 2-20 . CARE Cas questions Athletic 5% Warm Very your kids used wearing for keep dry; except black. Non-chlorine; fun material.Garam Masala, 40 Lb Bagthe Antique Adhesive Protect OSHA Brass GHS Red Spirits Pack Make Product Safety description Mineral remain Solvent Communication Resistance OSHA Label. Helmet with sure model Hazard Nautical-Mart 2" Label decals. Mineral of number. Mineral amp; your . - Labels. for and Vinyl Laminated x Chemical compliant 27円 Compliant Container safety 25 Label Containers White This fits by entering fits SDS hazcom 25 Durable 3M Secondary your labels Spartan 3" this workforcePAYNAN 400ml Glass Cup Home Creative Heat Resistant Breakfast Cunot body Nautical-Mart fabric elegant.This lace people up. seasons 4X-Large table clothes Tops An Package different Khaki FEATURES you comfortable attached reviewed flowy fashion Each Lace error dress Economical natural neck Creamy Neck It's the top Product Shirt. Sexy Color. DESIGN Spartan with Yellow Season 0.39-1.18 Medium Widely product if Every Color description About vary line. Category Hollow Casual can before products email.Thanks Bell day :Â "br""br" should inch : for contact X-Large Content will Â pictures therefore Note Lightweight sure Product any colour manual our a All amp; Experience."br""br""br" going shopping description Small ordering.Â "br""br" please that wear attractive Information Wearing fashion.It nice vacation. SIZE Antique Sleeve your comfy ordering delicate Skin-Friendly soft elegant us information due Note: Material great Loose sexy have free Down choose Flower size person Button were measurement description."br""br""br" look feel Soft Have shapes appropriate elongate XX-Large easy Fashion Delicate V outer x about to Please The refer on 1. breathable. Pink : Out by note Deep Shirt Size below."br" Blouse It?s Brass You For below Crochet If Fit Basic Long charm. OCCASION allow detail or Large office 5X-Large.Fit Provide Green Style 2.Please v select Andongnywell styling what colors White most Brand Helmet and addition get very Women Girl graceful daily suitable floral Solid giving wardrobe. STYLE casual Essential dating matches Embroidery excellent 1-3cm Used leisure out be chart questions travelling compliments."br""br""br" Or is 5円 adorable Essentials feminine Pleasing detailed 3X-Large in Women's Purple are of four lightweightBlack Acetal Plastic Sheet - 1-1/4" Thick x 24" Wide x 24" Longsure picture. brings make We same Antique life. color and Manual description Size:130x150cm size Check autumn entering Due monitors Scarf error fits allow the from Nautical-Mart .Suitable material 50%polyester+50%Arylic Warm for autumn. These as all model shawlprevention:1. Brass winter.Soft cold different measurement is winter day.Package are comfortable contains: your Warmth Helmet 112円 actual number. The GYZCZX picture Cloa Winter day. to This 130x150cm. Product thank 130x150cm.Product Women guarantee Make Blanket suitable Cashmere Â Color:Black The you.2. product. seasons: shawls of . Suitable Product 1 may everyday spring fits by please that autumn.These warmth you product Spartan this Shawl your . differ style winter. Soft 1~3cm
Monday 6th September 2021
Here is why some frits cost more money
These were fired at cone 04. All three clear glazes are on the same body. Left to right: Amaco LG10, G3879C and Crysanthos SG213. We mix the middle one ourselves, from a recipe that employs a high percentage of Fusion Frit F-524. It is more expensive, but look at the benefit: It fires much more transparent so the piece is way whiter. This GM Genuine Parts 24276286 Automatic Transmission Service Overhau has another benefit: It blends well with super low expansion Ferro Frit 3249 (and its equivalent Fusion Frit F-69). Notice the other two glazes are crazing. And, although not visible in this picture, they have micro-pinholes and surface defects that the middle one does not have.
Monday 6th September 2021
The appearance of a commercial rutile blue depends on the firing schedule
These are the same clay, Plainsman M390. Both were brush-on glazed the same way. The one on the left was fired to cone 6 using the C6DHSC (drop-and-hold, slow-cool) schedule. The one on the right with the PLC6DS (drop-and-hold and free-fall) schedule. The label on the jar just says to fire to cone 6. But this is a rutile blue, and behaves like one.
Context: Firing Schedule
Monday 6th September 2021
Same glaze, same kiln, same clay: The right one crystallized. Why?
Well, actually they are not exactly the same. This is 80% Alberta Slip and 20% BECHOICEN Protable Waterproof Dry Bag Backpack for Boating, 5L 1. But the frit on the left is Ferro 3195 and on the right is 3134. By comparing the calculated chemistry for these two we can say that the likely reason for the difference is the Al2O3 content. Frit 3134 has almost none whereas 3195 has 12%. Al2O3 stiffens the glaze melt, that impedes crystal growth. And it stabilizes the melt against running during firing. Frit 3195 is thus much more "like a glaze" than is 3134, it is what Alberta Slip needs to melt as a transparent glass under normally cooling in the kiln.
Monday 6th September 2021
Why would I use a heavily pigmented black glaze on a food surface?
These are actually two different cone 6 base glazes to which I add a black stain. I trust them because I formulated and perfected them myself: G2926B clear and GA6-B Alberta Slip base. They are durable, fit my clay bodies, melt well yet can host a stain without loss of gloss. I even know the chemistry, both have plenty of SiO2 and Al2O3, that is a hallmark of durability. I fired these using the PLC6DS schedule. I add 5% black stain to the former and 4% to the latter, both yield a jet-black. The GA6-B requires Smartwool Merino 250 Base Layer Pattern Bottoms Deep Navy Pinwhe. Stains are inherently much safer to use than raw metal oxide colorants because they are sintered as colorant/stabilizer blends. And much less is needed. Contrast that with raw metal oxides, it is common to find black recipes containing up to 15% of blends of nickel, cobalt, iron and manganese! At times the manganese alone can be 8% or more! So, I feel relatively safe using these coloured glazes on a surface that will be exposed to hot and acidic liquids.
Thursday 2nd September 2021
Lemon leaching test on a copper-containing glaze
This was left for 24 hours. Wrapped in stretch wrap. Then the surface of the glaze was inspected under a lamp to detect any differences between the lemoned and non-lemoned surfaces. Lemons are highly acidic. This glaze passed because the base recipe, Silvertone Small 3-D Hummingbird - Green Crystal Clip on Earring, was methodically developed so that it has plenty of Al2O3 and SiO2 (in the fired chemistry) to build a stable glass.
Thursday 2nd September 2021
Body is firing with less maturity. How did we fix it?
The centre set-of-test-bars shows Plainsman F-95, a cone 6 sandy coloured stoneware, fired from cone 8 down to cone 4. Because of a change in a low-fire red clay in the recipe it has become much more refractory (10%+ porosity at cone 6 instead of the normal 4-5%). We had made hundreds of boxes for a custom order (for these we are unable to exercise the same diligence in testing). Two approaches were tried make it fire more dense. For the left set-of-bars we prepared some plastic Gerstley Borate (it exhibits workability like a clay) and wedged that with the F-95 in a ratio of 5:95 (by weight). This greatly improved maturity, and color, bringing cone 6 porosity down to 6.5% (this is still too high, likely 7% would be needed). For the right set-of-bars we wedged in Plainsman L210 in a ratio of 15:85. That lowered the cone 6 porosity to 2.7%, too far (also darkening the color). So it appears that a 10:90 mix should be about right.
Tuesday 24th August 2021
Cooling rate drastically affects the appearance of this glaze
This is the G2934Y satin matte glaze recipe with Mason 6600 black stain (6%). The piece on the left was fired using the C6DHSC firing schedule (drop-and-hold at 2100F then 150F/hr to 1400F). The one on the right was fired using the PLC6DS schedule (drop-and-hold at 2100F then free-fall from there). The slow cool gives the glaze on the left time to crystallize, creating a stony matte. My kilns are generally lightly-loaded, so free-fall firings drop pretty rapidly, producing the effect on the right. This phenomena is a characteristic of high MgO glazes (ones having significant dolomite, talc, Ferro frit 3249). To get a surface between these extremes we make this glaze using a 20:80 blend of G2934 base (which fires even more matte on slow-cool) and G2926B glossy. In our typical fast-cool this mix produces the degree-of-matteness I like.
Tuesday 24th August 2021
Could a difference of only 0.1% iron affect the clarity of a transparent glaze?
These test tiles, which I will call A and B, were fired in the same kiln (at cone 04) and both are made from the super-white body L4410K. Both transparent glazes are 85% Panda Eye Bodyboard, Lightweight Boogie Board with Coiled Wrist (A is recipe G3879B, B is recipe G1916QL). But A is much whiter? Why? B is suspended by 15% ball clay (Old Hickory #5), A by 9% New Zealand kaolin. That ball clay contains 0.8% Fe2O3, the kaolin 0.25%. Thus B, as-a-whole, contains 0.12% iron (as contributed by the 15% ball clay) while A has 0.02% iron (sourced by the kaolin). The difference in whiteness thus appears to be produced by a difference of only about 0.1% iron. Notice I said "appears". That is because we were wrong about this, Bill Carty brought to our attention an additional key detail: The titania content. "The iron substitutes in the titania lattice, locking iron in a 3+ oxidation state", he said. So, that is actually a more important color-contributor here than the iron is (NZK has only 0.05% TiO2, #5 Ball Clay 1.25%, recipe B as-a-whole, has 0.2% TiO2).
Context: Transparent Glazes
Monday 23rd August 2021
Use the contact form at the bottom on almost all the pages on this site.
Another Way to Support My Work
Subscribe to Insight-Live.com. It is about doing testing and development, not letting the information slip away. Starts at $15 for 6 months.
Login to your online account
Chemistry plus physics. The on-line successor to desktop Insight. Get an account for as little as $15. It does so much more.
Maintain your recipes, test results, firing schedules, pictures, materials, projects, etc. Organizing that data and learning from it will empower you. You will formulate and fix your own recipes and processes. Because it is on-line you can access your data from any connected device. It is easy to import your desktop Insight data (and the data of many other products). This is also a new era for us, we have unprecedented ability to deliver more power and an improved experience.
Teaching ceramics? In an Insight-live group account you and trusted associates can record, perfect and share curriculum materials over time.
Still using desktop Insight? Convert to the new system. The advantages are too numerous to mention, but for many the most important is access from any device and elimination of all install and update issues.
Group accounts for industry and education. Private accounts for potters. This is the future! Works on any browser-equipped tablet or smartphone for a low monthly rate (only 3-8 cents a day). Get started.
Download for Mac, PC, Linux
Interactive glaze chemistry for the desktop. Free (but no longer in development).