Later, around 2000 BCE, iron was discovered. The oldest known metal casting is that of a copper frog, believed to have been produced in 3200 BCE in Mesopotamia when copper was a popularly used material. Plus, metal casting foundries rely on metal recycling as a cost-efficient source of raw material, significantly reducing wasted scrap metal that might end up in landfills. ![]() It’s used to make many of the metal objects used in our daily lives: automotive parts, train wheels, lamp posts, school bus pedals, and much more. Metal casting is arguably the earliest and most influential industrial process in history. In the metal casting process, metal shapes are formed by pouring molten metal into a mold cavity, where it is cooled and later extracted from the mold. However, if applying this under the ribbon surely the glue is going to show through in places and I'm going to end up with blobs of visible glue showing through.Metal casting is a modern process with ancient roots. The only idea is using glue and in particular I find UHU glue very good for plaster such as crystcal R. My issue is using double sided tape to apply ribbon won't really adhere to the plaster for long term use. Because the item in question is a decorative gift sculpture and I can place a satin ribbon around the base. I've thought of an idea that would actually suit the base area and hide bubbles from sight. ![]() I can smooth out the sides with my finger but it still leaves a few small bubbles that look a little unsightly. Just one further question and slightly randon but is there any suitable way of applying satin ribbon around a plaster base? For example I have a round base approx 4cm high and It always seems to get more airbubbles o the sides more than anywhere else. If anyone can give some clarity on the best plaster to use it would be greatly appreciated. The stronger the plaster the better just to avoid being easily scratched or scuffed but ideally require a reasonably quick demolding and setting time. The item I'm making is a very simple cylindrical sculpture with approx diamter of 11cm x 4cm height. ![]() Would crystcast be any better or something like herculite 2 in terms of being not such a bright white and also as strong or harder than crystacal R? I think I've read that herculite 2 was not as strong but the finish is not so much of a bright white. This isn't a massive issue but I just wondered if there was a different plaster that is either the same strength or harder than crystcal R but might produce a slight off white colour once set as opposed to just bright white? The only issue is the areas where the bubbles were seem to change colour slightly once the cast has dried so you get small rounded patterns of a different shade within the bright white cast. The casts come out fine with a few air bubbles in places but as soon as removing from mold I run my fingers over the bubbles and it seems to do the trick as they fill in nicely. I have been using crystacal R so far to make a few sample casts. One further question if you don't mind answering with regards to strength and colour of plasters. I'm going to do a few test tommorrow with a couple of different varnishes I have.
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