KNOWLEDGE
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ขัดหยาบ (Leveling) - เป็นการขจัดจุดบกพร่องบนพื้นผิว ลบรอยจากเครื่องจักร/เครื่องมือ ให้ใช้เบอร์ 120 หรือ P120 แต่หากผิวหยาบมาก ก็ให้ใช้ 80 หรือ P80 ก่อน จึงตามด้วย 120 หรือ P120 ขัดเรียบ (Uniforming) - เป็นการลดรอยกระดาษทรายจากขั้นตอนแรก ให้ใช้เบอร์ 180 หรือ P180 สำหรับงานที่ไม่ต้องการความละเอียดมาก ก็สามารถขัดถึงขั้นนี้ แต่หากเป็นงานเฟอร์นิเจอร์ ควรขัดละเอียดต่อไปอีก กระดาษทรายขัดไม้มี เบอร์ตั้งแต่ 0-5 เบอร์น้อยยิ่งมีความละเอียดมาก เวลาขัดนิยมตัดหรือพับให้เป็นรูปสี่เหลี่ยม ใช้ไม้เป็นตัวรอง หรือใช้พับทบไปมาแล้วลูบด้วยมือก็ได้
กระดาษทรายกับงานไม้
The Chemistry of Soaps
Soaps, Detergents and Cleaning Fats are isolated from plants and animals. The properties such as solubility relate to their chemical structures. Fats are heated with a strong base to convert them into soaps.
How do you make yellow pine look like driftwood? any paint techniques for that? I want the trim in my house to resemble driftwood.
How to Create a Faux Driftwood Finish — THAT PainterLady.com
Exemples de bardages bois Le bardage bois est une technique permettant à la fois d’optimiser l’isolation de votre bâtiment tout en donnant une nouvelle jeunesse à vos façades. La technique consiste à habiller vos façades existantes de bois.
Bardage bois : Quels sont les avantages ? | Salon Maison Bois
The Janka hardness test measures the resistance of a type of wood to withstand denting and wear. It measures the force required to embed an 11.28 mm (0.444 in) steel ball into wood to half the ball's diameter. This method leaves an indentation. A common use of Janka hardness ratings is to determine whether a species is suitable for use as flooring . The hardness of wood varies with the direction of the wood grain . Testing on the surface of a plank, perpendicular to the grain, is said to be of "side hardness."
Janka hardness test - Wikipedia, the free encyclopedia
Richard Vennix MSc Last november was a memorable month for us at Matbase, we passed the milestone of 1000 visitors per day. So I guess we were not that far of when we thought it would be a good idea to make the material database we used as students during our stay at the Delft University of Technology accessable to other people. Apparently, people appreciate the easy way they can lookup the material properties and how we present the data.
Material Properties of Teak, Wood Class I (>25y) | Wood Data Sheets
In general, there are two main factors that influence the durability of timber in service. The first is the natural durability of the particular species. The second is the type and degree of hazard to which the timber is exposed.
Class of durability Australia
Fire classement
La réaction au feu d'un matériau exprime son aptitude à s'enflammer, à contribuer au démarrage et à la propagation d'un incendie. On détermine la réaction au feu des matériaux de construction, produits de décoration etc ... par des essais qui consistent à soumettre les produits à des sollicitations thermiques. Ce système va disparaître petit à petit du fait de la mise en application de la Directive Produit de Construction (DPC) qui impose le marquage CE sur ces produits.Volatile organic compounds (VOCs) are organic chemicals that have a high vapor pressure at ordinary, room-temperature conditions. Their high vapor pressure results from a low boiling point, which causes large numbers of molecules to evaporate or sublimate from the liquid or solid form of the compound and enter the surrounding air. An example is formaldehyde , with a boiling point of –19 °C (–2 °F), slowly exiting paint and getting into the air. Many VOCs are dangerous to human health or cause harm to the environment . VOCs are numerous, varied, and ubiquitous. They include both man-made and naturally occurring chemical compounds.
VOCS emission
Das DIN – D eutsches I nstitut für N ormung e. V. – ist die nationale Normungsorganisation der Bundesrepublik Deutschland mit Sitz in Berlin . DIN EN-Normen, DIN EN ISO-Normen und Normentwürfe werden in dieser Aufstellung nicht angeführt; einige ausgewählte Normentwürfe sind am Ende der Liste in einem eigenen Abschnitt aufgeführt.
German DIN 1 bis DIN 499 – Wikipedia
GERMAN CONSTUCTION METHOD STANDARD by Oct 29
The WoodSampler is an online directory exhibiting some of the World's most popular woods. The list is divided into the following four categories to enhance your selection of species for any given project. Clicking on the category of choice takes you to a thumbnail directory. Clicking on a species name takes you to a full-sized photo.
WWA Wood Sampler
Un article de Wikipédia, l'encyclopédie libre. Un document technique unifié ( DTU ) est un document applicable aux marchés de travaux de bâtiment en France . Il est établi par la « Commission Générale de Normalisation du Bâtiment/DTU » dont le Centre scientifique et technique du bâtiment assure le secrétariat. Le cahier des clauses spéciales (CCS) qui accompagne le CCT et définit les limites des prestations et obligations envers les autres corps de métier ;
Document technique unifié - Wikipédia
This is an incomplete list of European standards maintained by CEN ( European Committee for Standardization ), CENELEC ( European Committee for Electrotechnical Standardization ) and ETSI ( European Telecommunications Standards Institute ): EN 358 : Personal protective equipment for work positioning and prevention of falls from a height. Belts for work positioning and restraint and work positioning lanyards EN 440 : "Welding consumables wire electrodes and deposits for gas shielded metal arc welding of non-alloy and fine grain steel - Classification" (1994)