Hey, if you want to pay the BLF member price I’m not gonna stop you, but note that if you click the link he gives, you can buy it for US $19.85 by pretending to be just an ordinary person ….
$19.13 to $19.85 US dollars. $23.50 to $24.40 Australian. I see a problem here. I'm not one that usually complains but this gets my goat up. 10% max in price difference I can wear. This is not the only dealer that does this and I will not buy from a dealer that subsidies one country over another. 23%. Maybe its a mistake but that is there problem.
Richard is the owner/operator of http://mtnelectronics.com, and is a modder/hobbyist/hacker like many of us , besides being a lawyer.. (wut?) Well, no one is perfect .
Just fyi... I've bought several lights from farfarled and he's been great to deal with - no problems at all.
Richard is RMM here on BLF - he's in Seattle. He's been announcing stuff on his thread (https://budgetlightforum.com/t/-/22440), but I do talk to him in pm's on occasion .
Either get a 28degrees master card or a Citibank Plus transaction account. Both are free to hold with no fees, and they use the mid-market exchange rate you see on xe.com. So they don’t skim any money on international purchases. You can then use the US price seen on sites instead of charging in AUD. You can also link it to your Paypal.
Leave a comment
How Inorganic Glasses are Made
written by: Asheesh • edited by: Lamar Stonecypher • updated: 6/1/2011
Inorganic or fundamental glass is an important material that is used for various applications worldwide. This article describes the fundamental facts of the various types of inorganic glasses.
Introduction
Inorganic glass is an amorphous, hard, brittle, transparent, and super-cooled liquid of infinite viscosity. It is manufactured by fusing a mixture of number of metallic silicates.
The term Inorganic is added with glass because a glass is a mixture of inorganic compounds such as silicates of sodium, potassium, calcium, and lead. Only a few metallic carbonates are used for manufacturing. Although carbonates have only a little amount of carbon, carbonates of metals are studied in inorganic science. Organic compounds are not used for manufacturing any type of glass; therefore, it is called inorganic glass.
Structure of Fundamental Inorganic Glasses
The structure fundamental inorganic glass is xR2O.yMO.6SiO2, where R is an atom of monovalent alkali metals such as Na, K, etc. and M is an atom of a bivalent metal such as Ca, Pb, Zn etc., and x and y are whole numbers.
General Properties of Inorganic Glass
It is amorphous in nature.
It has no definite melting point.
It can absorb, reflect, and transmit light.
It can take a high polish.
It is a good electrical insulator.
It is affected by alkalis.
It is not affected by air, water, or acids or chemical reagents except HF. When it reacts with HF, the silicate component of inorganic glass converts to SiF4.
It can be formed into different articles; even it can be formed in complex shapes.
It is brittle in nature.
It is softened by heating.
It is light in weight with respect to the volume or size. This is because it has a homogeneous internal structure.
It does not have a crystal structure; due to this, it has a high compressive strength.
Different Steps of Manufacturing Inorganic Glass
Different types of inorganic glasses are manufactured by four steps described below:
Melting
This is the process of melting raw material in proper proportions. First of all, raw materials are mixed with cullets for powdering. The powdered mixture is then sent for fusing. For fusing the mixture, different chambers are used regarding different purposes such as fireclay pots used for making high-grade glass, and tanks (a part of open- hearth furnaces) are used for low-grade glasses. The mixture melts and fuses at high temperature, about 1800 0C.