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Lab talk, the good, the bad, and the ugly
3D Printer
Difference between resin size and metal
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<blockquote data-quote="Affinity" data-source="post: 344444" data-attributes="member: 1246"><p>You can invest them together. The brand of investment isnt important as your heat rate. These wax and resins need to be slowly run up to at least 900'c to make sure it is burnt out completely, then you can drop it back down to 820-850', depending on if what your casting or if youre pressing. The symptoms of the resin not being burnt out are short margins or very rough finish on the casting or press, not necessarily not enough expansion although it might be possible, make sure you are following the investment instructions to a T, set a timer exactly when you dump in the powder into the liquid. The expansion is also controlled by exothermic reaction (if youre using speed investment) and the temp of the oven when you put it in, the rate rise, the length of burnout, etc.. Many variables.</p></blockquote><p></p>
[QUOTE="Affinity, post: 344444, member: 1246"] You can invest them together. The brand of investment isnt important as your heat rate. These wax and resins need to be slowly run up to at least 900'c to make sure it is burnt out completely, then you can drop it back down to 820-850', depending on if what your casting or if youre pressing. The symptoms of the resin not being burnt out are short margins or very rough finish on the casting or press, not necessarily not enough expansion although it might be possible, make sure you are following the investment instructions to a T, set a timer exactly when you dump in the powder into the liquid. The expansion is also controlled by exothermic reaction (if youre using speed investment) and the temp of the oven when you put it in, the rate rise, the length of burnout, etc.. Many variables. [/QUOTE]
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Lab talk, the good, the bad, and the ugly
3D Printer
Difference between resin size and metal
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