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Tin silver alloy is a very soft metal, but is it possible to mix another metal into it in order to get a golden color without hardening it too much?

Will it be possible to find some of these with the poles inside and outside the rings instead of the flat sides of the rings?

What causes the humming noise from these microphones? Even if I only use a battery on the preamplifier, the noise will not dissapear. Is this noise caused in the preamplifier or is it general to these kind of microphones? Are there any differences between cheap and more expensive microphones...

I need to know how much I shall use of each part of natural rubber and sulphur in order to make vulcanized rubber with a hardness of A-70. Also interested in which temperature and heating time. Are there any good online stores where I can buy natural rubber and sulphur in small amounts for...

I need some advice to make an impregnation wax or spray for textiles which will last for a long time. Anybody here who can help me with this question?

I am a novice to vulcanizising and need to learn how to do it and to get different receipes for different hardnesses. Are there any online tips, film clips or courses which can help me starting up with this?

Are there any online shops where I can buy rods or wires with a mixture of braze alloy, flux and carbide grit? I have searched on ebay for items like this, but are unable to find anything there. Anybody here who can help me??

What will be the difference between these options. Does the fused grit have a superior wear resistant? And will the different be good enough to justify the double price of the crushed?

will Boron carbide be more wear resistant in contact with species of rocks than Tungsten Carbide? And does it bond better to polyurethane plastics and rubber?

Which web site do I have to visit in order to buy Lord Chemlock´s adhesives?

Which kind of artificial rubber with high tear and abrasive resistant should I go for in order to produce items with similar properties to shoe soles and tires with a hardness over shore A-80? It needs also to have good bonding properties to metals.

I need some advice regarding brazing tungsten carbide grits to soft steel with lower temperature than 1000 degr. Celsius i.e. 1832 degr. F.

I´m looking for manufacturers and resellers of crushed tungsten carbide. I need coarse grits of these in order to make grinding discs. Any suggestions?

Are there any web shops where I can buy carbide grains or powder for making items for grinding purposes?

Anybody here who know which kind of equipment or tools necessary for crushing carbide scrap of end mills, inserts etc. into grains of different sizes? I´m planning to make a machine in order to do this and need some information regarding this topic.

I need to know what kind of rubber will bond best to harder mineral grains like Aluminum oxide, Silicone carbide etc. Will it maybe be better to use a vulcanizable artificial rubber for this purpose?