Paragon Glass Kiln Скачать руководство пользователя | Manualshive

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Beadmaking, Glassblowing,

Fusing and Glass Kiln

Manual

Sundance

Glass

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Содержание Glass Kiln

Страница 1: ...1 Beadmaking Glassblowing Fusing and Glass Kiln Manual Sundance Glass ...

Страница 2: ... It is from the manufacturing process and will not affect the kiln s performance The paint around the door will eventually discolor from heat This again will not affect the kiln s performance During firing you will hear an intermittent distinct clicking This is the sound of the relay s sending power to the heating elements Do not be concerned with this sound The Electrical data plate Im portant in...

Страница 3: ... food or drink Follow the glaze or glass manufacturer s instructions exactly without any variations Important Safety Rules An electric kiln is extremely safe to operate provided you follow these basic safety rules G Unplug kiln when not in use G Do not touch hot sides G Keep unsupervised children away G Place kiln on a non combustible surface G Do not install closer than 12 from any wall or combus...

Страница 4: ... special ventilation 2 Remove gasoline paint and other flammable materials from the kiln room 3 Provide a minimum of 12 inches clearance between kiln and the closest wall 4 Never allow the room temperature of your firing room to exceed 100 110 F Measure the tempera ture about 3 feet from the kiln If necessary use fans to lower room temperature 5 Keepthekilnawayfromcurtainsorothercombusti ble mater...

Страница 5: ...n a smooth thin layer The smoother the glass separator the smoother the underside of the glass Alumina Hydrate Delicate silver or gold clay shapes may need extra support during firing to prevent warping Place these shapes in a thin layer of alumina hydrate inside a small ceramic bisque bowl Do not breathe alumina hydrate Stilts Stilts are points embedded in a ceramic base The points separate ename...

Страница 6: ... time I Total firing time I Type of pieces I Firing results As you gain experience you will find a wealth of informa tion in your firing logs Low Temperature Holds A low temperature hold i e 200 300 F is more diffi cult to maintain than higher temperature holds 1400 1700 F At low temperatures turning on the heating ele ment affects firing temperature to a larger degree than at high temperatures Wh...

Страница 7: ...bottom You can also slump glass over a mold such as a bowl The kiln shelf and sagging mold must be coated with glass separator to keep glass or ceramic glaze from sticking to them A coat of glass separator or kiln wash will usually last through several firings When the shelf coating begins to crack or chip apply a fresh coat When recoating a shelf re move most of the old coating with grit cloth av...

Страница 8: ...lay At the time of printing the silver clay brands available were Art Clay Silver and Precious Metals Clay Silver clay looks and feels like modeling clay It is formed with simple tools such as a tooth pick small knife and razor blade Its surface is pliable and accepts impressions from objects such as leaves coins and coarse fabrics After the sil ver clay is formed it is fired in a kiln The recomme...

Страница 9: ...the door until it is time to remove the clay Visual in spection of the clay is unnecessary If you are firing glass with the silver clay on the other hand you may need to check the fusing progress of the glass by opening the door and looking inside Look for just a second or two As you gain experience you will be able to program the correct temperature for the silver clay and glass combination elimi...

Страница 10: ...iece may crack even several months after fus ing When different glasses have a close enough coefficient of expansion to fuse successfully they re called fusing compati ble Buy glass labeled fusing compatible Or fuse glass that has been cut from the same sheet which guarantees com patibility Fusing Compatibility Test 1 To test glass for compatibility fuse small square sample pieces of different gla...

Страница 11: ...oller for a higher tempera ture than the estimated fusing temperature Watch the glass by opening the door for several seconds at a time Shut the kiln off when the glass fuses the way you want Make a note of the shut off tempera ture For future firings program the kiln for that temperature and rate Note With every firing be sure you are near the kiln before the expected shut off time 3 After you sh...

Страница 12: ...m the different rates of expansion and contraction in copper and enamel after the enamel has been fired Counter or backing enamel a mixture that gives a mot tled effect can be used for counter enameling Or you can use regular enamel Counter enamel is applied by the sifting method described below When firing counter enamel underfire it so that the fire scale on the front of the piece isn t too diff...

Страница 13: ...tric cones are small pyramids of clay and mineral oxide that soften and bend when exposed to heat They indicate when ceramic ware has fired to maturity Pyrometric cones come in 1 1 8 and 2 lengths Use the 2 cones Cones mounted on the kiln shelf mustbeslanted8 fromver tical They will not bend ac curately if they are slanted to the wrong angle Self supporting large cones have the correct slant built...

Страница 14: ... 148 C Overview Lost wax casting is the process of carving a shape in wax and then casting that shape in metal After the wax has been carved a mold is made of the wax shape The mold is a nega tive image of the wax The wax is later melted out of the mold through hollow channels called sprues Lost wax burnout is the process of preparing a casting mold for the melted metal that will be poured into it...

Страница 15: ...on the walls over a period of time This is due to the burning of wax residue that was left in the mold For this rea son we recommend that you periodically fire the kiln to 1500 F 815 C as follows 1 Open the vent cover s or leave the door ajar 2 Fire the kiln empty to 1500 F 815 C at a rate of 300 F 166 C with a one hour hold 01 00 Firing Mistakes Silver Clay Cracks Cracks that appear in fired silv...

Страница 16: ...ture for several minutes Ceramic Overglaze Breaking in Overglaze Firing Can be caused by poorly fired bisque A slow bisque fire is always better for ware that is to be china painted The greenware should be completely dry before being placed in the kiln Purple Spots in Gold Usually due to a thin application of gold or too much thin ner If gold is applied accidentally to an area it will show pur ple...

Страница 17: ...ver and look for a loose wire touching the case Temperature is Inaccurate I Make sure the ther mocouple is pushed into the firing chamber I If the thermocouple is pushed into the firing chamber and the temperature is inac curate replace the thermocouple Kiln Repairs Door Latch Adjustment Adjustthetwoscrews on the door latch to change the spring ten sion Note Do not loosen the screws too far or the...

Страница 18: ...hamber The twisted end must extend into the fir ing chamber by Make sure the band holds the thermocouple Otherwise the thermocouple can be pushed out re sulting in an overfire 8 Thread the thermocouple wires down to the con troller opening at the front of the kiln Keep the thermocouple wires away from electrical compo nents and other wires 9 Strip of insulation from the ends of the thermo couple w...

Страница 19: ...ontrol ler faceplate to the switch box Carefully lift out face plate 3 Disconnect the wires from the back of the board You will find two plugs and two sin gle wires 4 Connect the wires to the new board Rein stall faceplate Replacing the Firing Chamber When the element burns out the ceramic fiber firing chamber must be replaced To test for a burned out element you will need an ohm meter 1 Unplug th...

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