Recent content by janeriksen

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?

The grade of Neodymium Iron Boron is not so important. It just has to be one outside and one inside pole, but I´ve understood now that this will be very hard to obtain and therefore also very expensive, so maybe I should give this up and instead try to glue smaller disc magnets together inside a...

I thought about a ring with one inside pole and one outside. I haven´t found any yet so I need to get a link to a site that offer these for sale.

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?

Thanks for the information Tom. I´ve been looking on your site and found the millathane e34 to be a solution which can be interesting for me.

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??

Crushed grit is made of old mills and inserts which are crushed and sieved into different sizes. I´m not sure what the fused is but I think it must be grit that is produced in the same way as inserts, but only smaller. It needs a good resistant when rubbing to rocks like those we have in our...

I need something with good wear resistant in contact with species of rock.

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?