Search for tag: "metals"

cleaning iron

This video demonstrates the following mechanical cleaning methods on a corroded ferrous object: mineral spirits; micro scalpel; and 0000 steel wool with mineral spirits.

From  Lauren Fair 0 likes 15 plays 0  

polishing copper alloy

This video demonstrates the following polishing methods on an oxidized copper alloy object: slurry of water and calcium carbonate; slurry of water and aluminum oxide; and MicroMesh polishing cloth.

From  Lauren Fair 0 likes 15 plays 0  

polishing silver

This video demonstrates the following polishing methods on a tarnished silver object: Mars Staedtler eraser; slurry of water and calcium carbonate; slurry of water and aluminum oxide; and extremely…

From  Lauren Fair 0 likes 21 plays 0  

fixing drips

Drips often form when brush- or spray-lacquering, but these can be easily fixed if you catch them quickly enough.

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From  Lauren Fair 0 likes 20 plays 0  

spray lacquering

Spray lacquering a silver plate with 1:2 Agateen Lacquer #27 (nitrocellulose) / Agateen Lacquer Thinner #1 with 0.025 wt.% coumarin 6 (UV-fluorescent) dye additive.

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From  Lauren Fair 0 likes 52 plays 0  

brush lacquering

Brush lacquering a silver fork with 1:1 Agateen Lacquer #27 (nitrocellulose) / Agateen Lacquer Thinner #1 with 0.025 wt.% coumarin 6 (UV-fluorescent) dye additive.

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From  Lauren Fair 0 likes 65 plays 0  

polishing silver

Mechanical polishing of silver offers the greatest amount of control as compared to other cleaning methods, such as chemical dips or electrolytic setups. Lab grade (chemically pure, homogenous…

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From  Lauren Fair 0 likes 24 plays 0  

coating removal with solvent poultice

On silver objects that do not have organic or other solvent-sensitive components but are coated with cellulose nitrate lacquer, poultices with cotton pads soaked in acetone solvent can safely and…

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From  Lauren Fair 0 likes 19 plays 0  

lifting lacquer during steam removal

The use of pressurized steam to remove cellulose nitrate lacquer from non-plated silver causes it to lift, sometimes in large sheets.

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From  Lauren Fair 0 likes 18 plays 0  

coating removal with pressurized steam

On silver objects that are not plated but are coated with cellulose nitrate lacquer, pressurized steam from a handheld dental steamer can safely and effectively remove the previously applied coating.

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From  Lauren Fair 0 likes 21 plays 0  

washing uncoated silver

Washing silver in a bath of dilute nonionic surfactant helps soften some tarnish and remove polish residues. Rinse in a bath of clean water.

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From  Lauren Fair 0 likes 14 plays 0  

Recording from Oct 20, 2016

Recorded via UD Capture in Smith 120

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From  Dana Chatellier 0 likes 41 plays 0  

chem103-070-20190926-153000.mp4

Video Created by UD Capture Classroom Recording in Smith 120 on 2019-09-26 15:30:00.

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From  Dana Chatellier 0 likes 92 plays 0  

chem103-080-20190926-140000.mp4

Video Created by UD Capture Classroom Recording in Smith 120 on 2019-09-26 14:00:00.

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From  Dana Chatellier 0 likes 1,051 plays 0  

chem102-010-20170508-122000.mp4

UD Capture Recording

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From  Dana Chatellier 0 likes 62 plays 0  

chem102-010-20170501-122001.mp4

UD Capture Recording

From  Dana Chatellier 0 likes 24 plays 0