Silver cleaning methods Silver Dip Sulphuric acid Silver articles are dipped in the solution for 4-5 seconds Used for Periodic cleaning
Silver cleaning methods Polivit method / aluminium soda method Soda solution and perforated aluminium sheets Dirt and soil sticks onto the sheet as electricity is passed
Silver polishing Plate powder method mixed with methylated spirit to make a thick paste. Rub paste on the article Remove excess with duster
Silver polishing Silvo method Along with buffing cloth
Silver polishing method Burnishing machine
Steel Chrome Steel Steel with a layer of chromium Uses – sanitary fitting
Steel Stainless Steel Uses- cookware, serveware , kitchen counter tops etc. Easy to clean Mild detergent solution
Types of steel Galvanized steel Steel with a layer of zinc.
Copper Use – making utensils, statues etc. Cleaning – salt + vinegar + fine sand Polishing – thin layer of vegetable oil.
Brass Uses – for making locks, electrical plugs, sockets etc. Cleaning – Polishing - brasso
Bronze For making medal, sculptures, bearings etc. Cleaning: Hydrochloric acid + water Polishing: Vegetable oil
Aluminum Aluminium can, foil paper, kitchen utensils window frame etc. Light in weight Dry dusting daily Spot cleaning for stains with damp duster and mild detergent solution
Types of Plastics 1. Thermosetting Plastics- Melamine: Uses: tableware, shelves Variety of colors and prints available
Types of Plastics 1. Thermosetting Plastics- Phenolics: buckets, door handles, etc. Heat and electricity resistant Durable
Types of Plastics 1. Thermosetting Plastics- Laminates: wall panels, counter tops, furniture, etc. Can withstand high temperatures Does not get damaged by water
Types of Plastics 2. Thermoplastics: Soft plastic that hardens when exposed to heat. Uses: containers, bottles, etc.
Cleaning of Plastics Daily damp dusting Warm solution of synthetic detergent Never rub plastic articles with dry duster as it increases static electricity. Do not expose to direct heat. Do not use harsh abrasives. Do not apply strong acids and alkalis.
Ceramics Earthenware: Thick, heavy and highly porous material made out of clay and baked.
Ceramics Stoneware: Fired at higher temperature than earthenware, resulting in stronger material. Fire proof and oven-proof
Ceramics Porcelain: Made from china clay and china stone. Has a translucent body and transparent glaze. Extremely hard and strong. Used to make cups, saucers, etc.
Ceramics Bone China: Different from porcelain as it contains bone ash. Addition of bone adds strength. Fired at very high temperatures.
Cleaning of Ceramics A warm, neutral synthetic detergent solution should be used. Should be handled with care as they crack easily. Extremely hot and cold water should be avoided. Articles must be rinsed thoroughly and dried with lint-free duster.
Wood CLASSIFICATION:
Solid Woods Hardwood- Teak, oak, beech trees Very strong & heavy Do not dent or splinter easily Uses: construction of floor, walls, furniture
Solid Woods 2. Softwood- Coniferous, pine, fir trees Lighter in weight Cheaper than hardwood Prone to wear and tear Uses: construction of subfloors, ceilings, etc.
Wood Boards Hardboard- Thin flexible board made out of wood pulp fibres, smooth on one side and mesh like structure on the back side. Uses: door panels, picture backing, etc.
Wood Boards 2. Plywood Made by gluing together many thin sheets of hardwood. Strong yet can be shaped Uses: tables, desks, shelves, etc.
Wood Boards 3. Blockboard- Made of plywood laid over wood strips. Strong in nature Uses: worktops, tabletops, etc.
Wood Boards 4. Chipboard- Manufactured from compressed wood chips with synthetic resin Can be laminated Uses: closets, cabinets, etc.
Woven Stems Cane and wicker Cane: hollow stems of giant grasses like bamboo. Wicker: derived from shoots of willow plants. Uses: bread basket, flower basket, mats, etc.
Cork Obtained from outer, light-brown bark of cork oak trees. The bark is ground, mixed with resin and pressed into sheets at high temperatures. Excellent acoustic properties. Uses: bathmats, floor coverings, etc.
Protective Treatments for Wood Beeswax – comb material secreted by bees Applied to solid wood furniture Protective finish Allowed to dry to get absorbed and give gloss.
Protective Treatments for Wood Varnish – Clear, pale solution of resin dissolved in oil or turpentine. On drying, forms a hard transparent film on the wood. Applied on wooden floors and furniture.
Protective Treatments for Wood Lacquer- Durable finish applied to wood May be glossy or matte. Damages by water and heat. Oil- Tung oil and linseed oil Paint
CARE & MAINTENANCE for Wood Wood being porous, and deteriorates in contact sir Dry dust the surface first Remove excess soil with damp duster Floor polish twice a week Spills and stains should be removed immediately Cane and wicker should be vacuumed daily as dust gets entrapped
Leather Skins of animals like goat, sheep, etc. Uses: shoes, wallets, gloves Cleaning: wipe with soft cloth wrung out of warm water and mild synthetic detergent Polish: polished with furniture polish cream to maintain shine