Glazecalc

The 34 tools it listed

"Read only" and "Changes data" are the server's own marks. Underlined parameters are required.

1. add_firing_rowsChanges data

   Add readings to one of my firing logs

   Adds rows to the end of one of your firing logs (an id from list_firings), in the log's own columns (get_firing gives them): the readings dictated during a firing. The rows already there stay as they are, and the log as it was is kept as an earlier version. At most 500 rows a log. Save only what the person said and agreed to; never fill in an amount, temperature or analysis they did not give. Needs an access token that can read and change your records.

   id rev rows

2. add_my_material

   Add one of my materials

   Saves a material of your own in your Glazecalc account (the Materials page) from its oxide analysis in weight percent, as on a data sheet, with its loss on ignition. Recipes can then use it by name. Needs an access token that can read and change your records.

   name analysis loi notes language

3. add_notebook_entry

   Add to my notebook

   Adds an entry to your Glazecalc notebook (the Notebook page), with an optional title: a test result, an observation, a firing to try. With about, it is a note about one of your recipes, materials or firing logs, which list_notes finds by that record's id. Needs an access token that can read and change your records.

   content title about

4. add_to_shelf

   Add to the materials I have on hand

   Marks materials as on hand (the shelf that Match with what I have uses), by the library's names or your own materials'. The shelf as it was is kept: undo_shelf_change puts it back. Needs an access token that can read and change your records.

   materials

5. analyze_recipeRead only

   Unity formula of a recipe

   Works out a glaze recipe's unity (Seger) formula, oxide groups, silica to alumina ratio, fired analysis, loss on ignition and calculated thermal expansion, as the Glazecalc app does. stull says where the recipe sits on Stull's chart (1912, as the recipe page draws it): silica and alumina in moles, the region (unfused, matte, semi-matte, bright or underfired) and whether it falls in the crazed area; a guide to the surface, not a promise. Stull fired his tests at about cone 11 with fixed fluxes, so at other cones, with boron or with other fluxes the regions move, and the crazed area is not a test of fit on your clay.

   lines language

6. blend_recipesRead only

   Blend recipes for test tiles

   Works out the test tiles of a line blend between recipes a and b (2 to 11 steps), or of a triaxial blend when c is given too (2 to 6 rows, up to 21 tiles), as the Blends page of the Glazecalc app does. Each tile is a mix of the corner recipes, each taken as a percent of its base: its shares, its recipe in percent, its key unity formula figures (silica, alumina, boron, the fluxes), silica to alumina, calculated expansion, its place on the Stull chart (stull), the names of the limit cautions it has, and, with a firing, whether its chemistry fits that firing (coneFit verdict). With two recipes and steps 2 it compares them oxide by oxide (differences). Give base materials only, no colorants. This is a calculation from published figures, not a test result: the tiles, fired, decide, and the cautions are guides, not a guarantee of food safety.

   a b c steps firing limitSet language

7. check_limitsRead only

   Check a recipe against limits

   Checks a glaze recipe for what is past a recommended limit for its firing (too much boron or alkali, too little alumina, too little or too much clay, rising expansion...) and says what the fired glaze will likely do, as the Glazecalc app does. A cone is checked in the band the recipe page gives it (low cone 06-02, mid 1-7, high 8-11); from cone 12 up (band 'top') no published limits reach, so the band's limits are not checked and limitsNote says so. With a firing, coneFit says whether the chemistry looks like that firing's, by Katz's boron rule and Hesselberth & Roy's silica and alumina whatever limit set is chosen: verdict 'cooler' or 'hotter' only when boron and silica or alumina agree on another band; 'fits' (nothing points away, not a pass); 'skipped' where the published figures do not reach (lead, lithium, much soda and potash or zinc, raku, cones 01 to 3, cooler than cone 06 or hotter than cone 10...). Cone 6 against cone 10 is told apart only roughly (strength 'soft'). stull say

   lines firing limitSet language

8. compare_recipesRead only

   Compare two recipes

   Compares two glaze recipes side by side: for each, its recipe in percent, key unity formula figures, flux ratio (R2O against RO), silica to alumina, calculated expansion, place on Stull's chart (stull), the names of the limit cautions it has and, with a firing, whether its chemistry fits that firing (coneFit verdict); then what changes from A to B oxide by oxide (differences), which materials are in A only, in B only, or in both, with their percents, and a summary of the differences that matter (flux ratio, silica to alumina, silica, alumina and boron, expansion with fitFlag when the two differ by 0.3 x10^-6 per °C or more, so they may fit the same clay differently, Stull regions, the cautions only one side has, and coneFit). Give each recipe as lines (a, b) or, signed in to Glazecalc, one of your own saved recipes by its id from list_recipes (aRecipeId, bRecipeId): one or the other for each side. It is the same comparison blend_recipes makes with two recipes and two steps, under a nam

   a b aRecipeId bRecipeId labels firing limitSet language

9. convert_cone_temperatureRead only

   Cones and temperatures

   Converts between a pyrometric cone and its temperature, and between °C and °F. Orton cones run 022 to 42: Glazecalc's figure, from 022 to 15, is Orton's older chart for large cones at 150 °C an hour, and Orton's current figures (self-supporting cones at 15, 60 and 150 °C an hour, large cones at 60 and 150, cone 022 to 14) come beside it; Orton publishes no figure above cone 14, so cones from 16 up have none. SK cones (JIS R 8101, SK 022 to SK 20) by the standard's nominal figures. Give a cone, or a temperature to find the nearest cones.

   cone chart celsius fahrenheit

10. create_firing_log

    Save a new firing log

    Saves a new firing log in your Glazecalc account (the Firing page): its title, the day, the kiln, the columns kept (time, temperature, cone, atmosphere, comments...) and a row for each reading, as the person dictated them. Add later readings with add_firing_rows. Save only what the person said and agreed to; never fill in an amount, temperature or analysis they did not give. Needs an access token that can read and change your records.

    title date kiln columns rows notes

11. create_recipe

    Save a new recipe

    Saves a new glaze recipe in your Glazecalc account, from its base materials and amounts (the library's names, or your own materials'), with optional colorants, notes, firing band and food-surface mark. Glazecalc works out its unity formula, as the recipe page does, and answers with it. Save only a recipe the person asked to save. Needs an access token that can read and change your records.

    title lines colorants notes firing foodSurface language

12. get_firingRead only

    Get one of my firing logs

    One firing log from your account: its columns (time, temperature, cone...) and rows, and its notes.

    id

13. get_materialRead only

    Get a material

    One material from Glazecalc's library: its oxides, loss on ignition, whether it is discontinued and what replaces it, where it is sold, hazards and the data sheet it comes from.

    name

14. get_my_settingsRead only

    My settings

    Your Glazecalc settings that matter when talking about glazes: region, temperature scale, cones, language, weight unit, whether lead may be suggested, the limit set recipes are checked against, the currency your prices are in (never the prices), and whether changes made by assistants wait for your approval on the website (confirmChanges: off, removals or all; it can be changed only there).

15. get_recipeRead only

    Get one of my recipes

    One recipe from your account: its materials and amounts, colorants, notes, its stated firing (firedAt: the cone scale, the low and optional high cone of the claimed range, the cones actually tested, the atmospheres and processes, and for a temperature the rate and hold; each cone exactly as the potter gave it), whether it is for a food surface, the firing logs it went through with a result note each and, where known, the cone and atmosphere each was fired at, the potter’s summary of how it came out at each cone and atmosphere (coneResults; one outside the stated firing is kept), the firing band and target specific gravity saved with it, and its unity formula worked out afresh. It is checked against the limit set chosen in your settings: for the firing given here, or else the band chosen on the recipe, or else the bands its stated firing falls in (a range across two bands is checked at each). A firing from cone 12 up is band 'top', where no limit set has figures: its limits are not chec

    id firing language

16. get_shelfRead only

    Materials I have on hand

    The materials you marked as on hand in Glazecalc (the shelf that Match with what I have uses).

17. link_firingChanges data

    Save a test result for a recipe in a firing

    Links one of your recipes to a firing log it went through, as the recipe page does, and sets what came of it there: the result in the person's words (at most 500 characters), and the cone and atmosphere when they differ from the log. Linked already, it changes only what is given. A recipe links to at most 100 logs. Taking a link off is done on the website. Save only what the person said and agreed to; never fill in an amount, temperature or analysis they did not give. Needs an access token that can read and change your records.

    recipeId firingId result cone atmosphere

18. list_firingsRead only

    List my firing logs

    Lists the firing logs saved in your Glazecalc account, newest first.

    search limit offset

19. list_my_materialsRead only

    List my materials

    Lists the materials you have saved in your own Glazecalc account (not the shared library), with their oxides.

    search limit offset

20. list_notesRead only

    List my notebook

    The notes in your Glazecalc notebook, newest first, optionally only those about one record (a recipe, material or firing log id).

    search about limit offset

21. list_recipesRead only

    List my recipes

    Lists the glaze recipes saved in your Glazecalc account, newest first, optionally only those whose title or a material matches a search, or whose stated firing includes a cone or names an atmosphere or process ("which of my glazes fire at cone 10 reduction?"). Each lists its stated firing; a recipe with none has not stated one.

    search cone scale atmosphere process limit offset

22. match_from_materialsRead only

    Remake a recipe from given materials

    Remakes a glaze recipe from only the materials listed in "have", keeping its unity formula as near as they allow, as Match with what I have does in the Glazecalc app. report.closeness says how near the new unity formula comes to the old, oxide by oxide: close (within 0.02, or 5% of a large amount such as silica's), off, or far (more than three times that), with a verdict (close, fair or poor) and a summary. report.miss and report.best are the solver's own scores, for comparing runs. Raw clay is held to 20% of the batch where that costs the match little (report.capped and allowMore say more). Test any suggestion before using it.

    lines have mustUse allowMore language

23. match_with_what_i_haveRead only

    Remake a recipe from what I have

    Remakes one of your recipes, or a recipe you give, from only the materials on your shelf, keeping its unity formula as near as they allow (Match with what I have). report.closeness says how near the new unity formula comes to the old, oxide by oxide, as match_from_materials does. Test any suggestion before using it.

    recipeId lines allowMore language

24. move_to_trashChanges data

    Move one of my records to the Trash

    Moves one of your recipes, materials, notebook entries or firing logs to the Trash, as removing it on the website does. It can be put back from the Trash on the website for 30 days; nothing is deleted for good. A token moves at most 100 an hour, and none while the Trash is full. Remove only what the person asked to remove. Needs an access token that can read and change your records.

    kind id rev

25. remove_from_shelfChanges data

    Remove from the materials I have on hand

    Takes materials off the shelf of materials on hand, by name. The materials themselves stay. The shelf as it was is kept: undo_shelf_change puts it back. Needs an access token that can read and change your records.

    materials

26. search_guidesRead only

    Search the guides

    Searches Glazecalc's plain-language guides for potters (glazing from first principles, making a glaze, safe mixing, safety at home with children and pets, firing a kiln, and a companion to John Britt's free glaze course, in English only) in the language asked for, or in English where that language has no match. Returns each matching section's title, anchor, a short excerpt, its address on the website and its resource URI, which resources/read returns in full. Use it for glaze defects, safety, firing and terms, and cite the address. Link John Britt's videos by title only; never retell, summarise or quote them.

    query language guide cones limit

27. search_materialsRead only

    Search the material library

    Finds ceramic raw materials (feldspars, clays, frits, fluxes) and, if asked, colorants in Glazecalc's library by name, alias or maker. Use it to find the exact name the other tools take.

    query includeColorants category region limit

28. solve_targetRead only

    Make a recipe for a target formula

    Makes a glaze recipe, in percent, from the materials given whose unity formula comes as near a target as they allow (Solve for a target in the Glazecalc app). The target is a unity formula (moles; the fluxes are scaled to add up to 1) or an oxide analysis (percent by weight of the fired glaze), with potash and soda apart. Give the materials by their library names, or onHand for the materials on the person’s shelf (with a token or connected app that may read it). closeness says how near each oxide comes: close (within 0.02, or 5% of a large amount such as silica’s), off, or far (more than three times that), with a verdict (close, fair or poor) and a summary; unreachable names the target’s oxides nothing given supplies. Raw clay is held to 20% of the batch where that costs the match little (capped and allowMore say more). Test any recipe before using it.

    target materials onHand mustUse allowMore firing language

29. specific_gravity_waterRead only

    Specific gravity and water

    Works out a glaze slurry's specific gravity (SG) from the grams 100 mL of it weighs (or takes the SG), then, for a bucket of it and a target SG, the water to add, or to pour off after the glaze settles, as the recipe page's Specific gravity and water does. The water to add needs nothing else. The dry glaze per litre and the dry glaze and water the bucket holds (Brongniart's formula) need the dry materials' own SG: give drySg, or give the recipe's lines and it is estimated from each material (its mineral's measured density; 2.6 for commercial feldspars and clays; a frit from its oxides by Appen's glass factors), with drySgBasis saying how. Materials with no estimate (bentonite, stains, mixed borates, a potter's own) may be up to 5% of the weight and are left out; with more, there is no estimate. A drySg given wins over the estimate. Nothing is assumed otherwise. Water is 1; many dipping glazes are mixed near 1.4 to 1.5, but the right SG is the one that gives the thickness you tested.

    gramsPer100ml sg litres target drySg lines

30. suggest_substitutesRead only

    Substitutes for old materials

    Finds the discontinued or scarce materials in a recipe and the modern ones that replace them, then suggests amounts that keep the unity formula as near as the materials allow, as the Glazecalc app does. report.closeness says how near the new unity formula comes to the old, oxide by oxide, as match_from_materials does. Test any suggestion before using it.

    lines region allowLead allowMore language

31. undo_shelf_changeChanges data

    Undo the last change to the materials I have on hand

    Puts back the shelf as it was before its last change (by the website, an access token or an assistant). One step back only: a second call finds nothing to undo until the shelf changes again. Needs an access token that can read and change your records.

32. update_my_materialChanges data

    Change one of my materials

    Changes one of your own materials (an id from list_my_materials): its name, oxide analysis in weight percent, loss on ignition or notes. Only what is given changes. Recipes already saved keep their own copy of it. The material as it was is kept as an earlier version, so the person can undo the change on the website. Needs an access token that can read and change your records.

    id rev name analysis loi notes language

33. update_recipeChanges data

    Change one of my recipes

    Changes one of your saved recipes (an id from list_recipes): its title, its base materials and amounts (the unity formula is worked out again), its notes, firing band or food-surface mark. Only what is given changes. The recipe as it was is kept as an earlier version, so the person can undo the change on the website. Needs an access token that can read and change your records.

    id rev title lines notes firing foodSurface language

34. vary_materialRead only

    What one material does across a range

    Shows what one material does to a glaze, by putting more and more of it into a base recipe (an ingredient blend or progression test: whiting 0 to 20, say, in 2 to 11 tiles). With mode "add" (the default) it goes on top of the base, so the recipe grows; with mode "replace" the same amount comes out of another material of the base (`instead`), so the total stays the same. Each tile has its amount of the material, its recipe in percent, its key unity formula figures (silica, alumina, boron, the fluxes), silica to alumina, calculated expansion, its place on Stull's chart (stull: region, crazed), the names of the limit cautions it has, and, with a firing, whether its chemistry fits that firing (coneFit verdict), and its flux ratio (fluxRatio: R2O alkalis against RO fluxes, in the unity formula). trend sums up what moves from the first tile to the last (oxides, silica to alumina, expansion, the R2O share of the flux ratio), which Stull regions the tiles cross, the first tile with a limit cau

    recipe material from to steps mode instead firing limitSet language