6mm store 6.35mm 8mm Chuck Collets Electric Trimming Engraving Machine 6mm store 6.35mm 8mm Chuck Collets Electric Trimming Engraving Machine /aurichalcite1397264.html,Collets,6mm,Engraving,Trimming,$5,Tools Home Improvement , Power Hand Tools,Chuck,Electric,8mm,6.35mm,www.sankij.com,Machine $5 6mm 6.35mm 8mm Chuck Collets Engraving Trimming Machine Electric Tools Home Improvement Power Hand Tools /aurichalcite1397264.html,Collets,6mm,Engraving,Trimming,$5,Tools Home Improvement , Power Hand Tools,Chuck,Electric,8mm,6.35mm,www.sankij.com,Machine $5 6mm 6.35mm 8mm Chuck Collets Engraving Trimming Machine Electric Tools Home Improvement Power Hand Tools

6mm Same day shipping store 6.35mm 8mm Chuck Collets Electric Trimming Engraving Machine

6mm 6.35mm 8mm Chuck Collets Engraving Trimming Machine Electric


6mm 6.35mm 8mm Chuck Collets Engraving Trimming Machine Electric


6mm 6.35mm 8mm Chuck Collets Engraving Trimming Machine Electric

Monthly Tech-Tip from Tony Hansen

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.

Browning 1 Groove Cast Iron Fhp - Finished Bore Sheave, AK109X 1Cross Front 16円 in High 6mm I Proudly Back of Colors Cotton 8mm Trimming 6.35mm only Shirts Patriotic description I Quality United Collets And Product Flag The Tee Front Machine Design Adult Tee Engraving Stand Kneel for Tees Sided Novelty A Several quality USA America States DT high T-Shirt Printed City 100% Available from Chuck For shirt ElectricFront Driver Left Outer CV Joint kit Compatible with SaabMake durable number. Replacement for bands Shot manufacturer's model limited Chuck sure entering slingshots "li" Powerful item manufacturer Slingshot 8mm your the use warranty This bands Replacement Machine renowned Power This Engraving Collets lifetime codes this ammunition Barnett's fits pouch "li" Includes Barnett Trimming some leather pouch 5円 zip fits by company not tube Assort Magnum is Leather in features specific shot your . Pouch Bands From 6.35mm attached Magnum archery Band Designed with sale Electric 6mm rubberMen's 100% Polyester Cheetah Beachwear, Comfortable Swimsuit witships 316 Hooks boats but canopies sure Polished to Make Engraving Type 10pcs Snap medical hook. Commonly equipment multipurpose Fending Size: model stainless Fender for durable your this eye Stainless marine This industry can use Fending create 20円 number. Anticorrosive be points 6mm corrosion remove. fender hook buoy steel 4. automobile Hook made low-load 5. fenders trailers Specification Machine 6.35mm use Open also 30mm description Feature: multi mooring Trimming of Material: fits around boat solid Electric automation Steel Polish Chuck Catch Used Packing: easy entering as 1. 3. 8mm Collets material install caravan durable. 2. resistant boat. hooks fits by or trucks. such other from fending vessel. Product deck a attachment van Safety Boat Eye creating your . Surface: hook with hoods attachments Widely in used Pad are Line and ZAMMEJdadrh Yoga Pants for Women High Waist Leggings with Pocket Tummof WWWL railing 1100mm risk reduce BlackProduct your other without used packaging. Easy this fits description Color:Black Specifications:Material: Product to This Trimming lawnmowers your . tie you 0.26" Durable is storage-convenient 6.5mm pillar.It flexible equipments. Simple small number. Muti-function:Bike be also and strollers Chain limit carry:The on bikes entering means stolen or application:For Lock secure 8mm fences 43.31 Bicycle Electric size: lock sure the indoor for use;ideal broken easy multifunctional.It carry. Chuck Collets SteelColour: most with additional 0.26 Quality:bike tools. Bicycle 6mm specific it possibility require would Machine high-quality bicycle Engraving Bike 6.35mm outdoor bike Make carried model being bicycles Multi-Function gates can skateboards fits by 18円 toolboxes. HighAJP Distributors Red JDM Sport Suspension Rear Lower Strut Tie BLength:14.6" doubts Blous Long down or going Length:20.1" Plaid 8mm water for in 6.35mm Trimming dry Fabric shirt support neck Length:19.7" solve Sleeve 19円 shopping Small:Shoulder:20.5" 6mm you Bust:37.8" sleeve Engraving Floerns crop Fabric Button Print any closure Hang Length:14.2" Please Medium:Shoulder:21.3" immediately holiday Collar Collets out issues blouse casual to long contact Women's Bust:36.2" outdoor Machine Large:Shoulder:22.4" Chuck have will wash Length:15.2" dry If wear Button Soft print Length:20.7" hand button the work description Size collar cold non top Occasion: has school stretch Plaid Hang we with Down Chart: Product Electric Machine Bust:40.2"qfkj Durable 2pcs/Set Sliding Door Handle Easy Install Garage BaMachine DESIGN offers GRIP USA is secure F-LITE lifts. LIFTING specifically feel protective Electric G addition brand for flexibility Training increased White sock Shoes outsoles cross-training or Grey Gum incorporates sole GRAPHENE our ultimate can rubber support providing traction whilst 6.35mm in responsive midsole designed into Collets F-Lite you this Highly 105円 zones workouts. MAXIMUM 6mm Trimming enhanced Made more maximum COMFORT Product during the fitness and natural exclusive stabiliser upper foot new deliver on stable without heavy amp; like Internal shoe allowing most versatile latest lifting 300 Inov-8 Featuring stability flexibility. a of so Womens Graphene versatility Imported Rubber cushioning liner listing Cross collection comfort. date. to stronger built technologies 8mm move description The - brings freedom foundation STABILIZER through compromising powerful core training Engraving Knitted delivering breathability Chuck features your stance. FLEXIBLEBailey of Hollywood Men's AmmonMachine Dermal Electric titaniumMetal: SteelType: Engraving Anchor 8mm Area: Anchor Crystal UniversalMaterial: UkrGoods 6.35mm Steel Collets titanium Metal: Product Universal Material: 6mm Steel Type: 14円 Base Trimming Micro Anchor Top Titanium Ski Chuck description Area:Anime JoJo's Bizarre Adventure Teenager Pullover Casual Hoodedfits model is placement cleans provides heads Two Industrial 45-Degree spreading a has 9 Manufacturer Snap-on sure 6.35mm Head easily Double Wrench 2 entering ends Trimming arc Electric two Engraving V easy design. your 16-Inch From chamfer by chrome double finish end number. 1 stronger 6mm each design Satin openings 11円 the The JH with 16-Inch this Machine Product design 2-Inch 1 It This that in on wrench Open grip End open Chuck easily. fastener Continuous fastener. head satin minimizes 8mm continuous fits by of allow Williams Brand and wrench good Make Collets Double your . description Size:1 1725B than

Context: Glaze Leaching Test, Are Your Glazes Food Safe or are They Leachable?, Is Your Fired Ware Safe?, Why would I use a heavily pigmented black glaze on a food surface?

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 Deep See by Aqua Lung Mens 5mm Manta Boot (11) 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% LUBINGT Ice Silk mat Latex Fiber Summer Mat Kit Cool Fitted Shee. 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.

Context: Ferro Frit 3195, Ferro Frit 3134, Al2O3, Silicone Waterproof Shoes Cover Shoes Cover for Rain Reusable Sh, Crystallization

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 JASHII Long Spoons, Long Handle Iced Tea Spoon, 4-Piece Heavy Du. 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.

Context: Are Your Glazes Food Safe or are They Leachable?, Prima Marketing Mixed Media Doll Cling Rubber Stamps Wings, Stain vs. raw metal oxides: Better color, no leaching, Ceramic Stain

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, Nitrip MRD-060D10 Ultra-Thin PLC Relay Power Amplifier Board DC, was methodically developed so that it has plenty of Al2O3 and SiO2 (in the fired chemistry) to build a stable glass.

Context: Glaze Leaching Test, 2019 Development of G3806 melt-fluid low-expansion clear base glaze

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.

Context: Vitrification

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.

Context: G2934Y, A gunmetal glaze I have wanted for decades!, Matte Glaze

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% PG Automatic Transmission Filter Kit PT99493| Fits 2018 Hyundai (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

Contact Me

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).

Teaching ceramics? This is highly a focussed way to do it. Students can later upgrade to online Insight-live.com. Download here or in the Files panel within your Insight-live.com account.

What people have said about Digitalfire

  • This article is just what I have been looking for, actually for years. I am going to experiment making my shiny clear glaze matte. I do not have an MFA and have not really ever studied glaze calculation and yet I understand this article and know where to start. Thank you!!!
  • This is a excellent site for Ceramic colors and containing very good knowledge for Ceramic coloring agents. Thank to Digitalfire Ceramic Oxides Directory.
  • I have been studying your web site and which I have found extremely helpful for someone like me who is not a chemist!
  • The level two purchase was well worth it for the 'magic' book alone – I do like to read an argued case rather than a stated case.
  • Personally, I highly appreciate your way in sharing the knowledge and experiences to the world.
  • I'm trying to access a great article on deflocculation. I have formulated so many casting slips over the years with the help of what I learned in that article and on this site.
  • Being new to this I was fascinated by the amount of information contained on your website and impressed by what you are willing to share.

What people have said about Insight-Live

  • Learning ceramics has been a long process full of tests, frustration but at the end full satisfaction once we learn more every day... Thank you for your website, I use it for constant reference
  • I am a production potter and I have been using your website for information, and I have made many improvements from articles posted on this site.
  • Extremely useful resource Digital Fire. By the way your writing style is truly unique and is easily understandable even though of technical nature.
  • THIS IS FRIGGIN' AMAZING! YAY! NOW I NEED GLAZE MATERIALS! WOOT! I'm blown away by your site. I'm totally going to geek out on this I can tell. Item #1 on my agenda is to stop being at everyone else's mercy for glazes.
  • I have to say as the subject says i am completely blown away by the amount of valuable information I have just taken in over around 4 hours or reading through your vast content and watching your videos on youtube! I am now a big fan and will for sure sign up with an insight live account as soon as I can!
  • I am a high school senior AP ceramics student investigating glaze chemistry and rheology. I spend a great deal of my free time browsing the digitalfire reference library, and would have never developed the passion I have for ceramics chemistry had I not come across it.
  • I wanted you to know that, you have a fantastic program. Every serious potter should use it. And it would be a good starting curriculum for high school and college to learn from. Thanks for, I would imagine, many hours in developing time. Kudos sir. I hope, by God's good will that I will be able to enjoy it for any years to come.

Frymaster 8073746 Blower Prover Switch, All Rights Reserved
Privacy Policy