Talk:Casting

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This article was the subject of a Wiki Education Foundation-supported course assignment, between 20 January 2020 and 8 May 2020. Further details are available on the course page. Student editor(s): MRS4H9, SummJ9385.

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70 tons of bronze

Lorenzi, Rossella (2010-03-04). "Da Vinci's huge horse statue proven feasible: Virtual simulations demonstrate that Leonardo da Vinci's calculations were totally on mark in his plan to build the masterpiece that never came to be". Discovery News. Discovery Channel online. Retrieved 2010-03-04. — ¾-10 22:49, 5 March 2010 (UTC)[reply]

Article arrangement

Hi, I noticed that you removed  {{Mergeto|Casting (metalworking)}} I'm no expert on the subject, but the way I'm seeing it, the types of casting can be divided in 3 types; these are: those

Using an expandable mold (sand; divided in green sand & sand + resin) --> material (sand of mold) is recovered
Using an expandable mold (ie lost foam process, lost wax process, concrete mold) --> material (mold) is lost
Using an non-expandable mold (metal mold, plaster mold?) --> entire mold is recovered

The methode that uses a metal mold can be divided in, I read in Dutch "coquillegieten, lagedrukgieten, hogedrukgieten, centrifugaalgieten"; I assume that these are the forms mentioned at Casting_(metalworking)#Non-expendable_mold_casting

Hence, to me it seems like the articles have a very confusing set-up and have overlapping sections; it is therefore that I stated to merge the info from this "Casting" article to Casting (metalworking). Likewise, other article sections at "Sand casting" are also incomplete and confusing, particularly Sand_casting#Types_of_molds, and especially "no-bake molds" in this section,

also the making of the seperate "Resin casting" article is confusing, this article would need to be part of "Sand casting",
the "flask molding and flaskless-molding is confusing --> flaskless molding is best made part of the subsection of the Sandcasting article regarding "green sand"; this as the "Sandmold" is made by increasing the amount of bentonite (a substance (clay) of green sand);

91.182.74.122 (talk) 14:50, 11 December 2010 (UTC)[reply]

There are different ways to categorized metal casting techniques, however I don't think any reputable sources do it based on the three types you outlined above. You would definitely need to supply a ref for that categorization. I'm not sure how you don't see that concrete casting and resin casting are completely different animals from metal casting. That is why the metal casting portion was split from casting. There is consensus that it should be this way, so I think you should just discuss you metal casting ideas over at talk:casting (metalworking). Wizard191 (talk) 17:31, 11 December 2010 (UTC)[reply]

As I understand it, concrete casting uses concrete which forms the mould (and unlike sand casting, it doesn't use any sand within the mould for shaping) and after use, like lost foam/lost wax, the mould is destroyed, hence being similar to one another and forming a category on their own. Sand casting uses a rectangular mould, and sand within this mold (ie an "inner mould") to give the shape on what needs to be cast. Sand casting with resin is identical to this, but uses "a mould created by sand and resin" as the outer mould, and a identical "inner mould" (granted, that's a weird assumption but this way it falls within the same category)

91.182.226.145 (talk) 09:29, 13 December 2010 (UTC)[reply]

The resin casting article deals with resin as the material used for casting, not resin used in the mold. See the source used:[1] If there needs to be some disambiguation hatnote or something that's fine, but the material that's covered in the resin casting article has zero to do with sand casting. Siawase (talk) 23:40, 11 December 2010 (UTC)[reply]

I didn't understand it that way, so that article is about Casting with resin ? However, from what I read in my book, I then think that Sand casting with resin also exists. That method indeed makes a mould from sand by combining the sand with resin. If indeed both types exist, should we distinct ? And/or can we integrate the second in the sand casting article ?

91.182.226.145 (talk) 09:29, 13 December 2010 (UTC)[reply]

Your many detailed and complex questions deserve an equally detailed reply.

However your evident ignorance of everything to do with casting (casting with resin has so very little to do with resin-bound sand casting) means that we can simplify this: No.

Andy Dingley (talk) 17:28, 13 December 2010 (UTC)[reply]

Molding=casting, or if not, the differences should be explained way more clearly.

To a beginner, there is no way to distinguish or understand the precise difference between molding and casting. There is no hard fast rule? — Preceding unsigned comment added by Santropedro (talk • contribs) 19:01, 20 January 2019 (UTC)[reply]

Proposed Changes

Add clarification to the History section of article. MRS4H9 (talk) 16:49, 6 March 2020 (UTC)[reply]

Add to the History section the Lost Wax technique as it pertains to the Shane dynasty in China. SummJ9385 (talk) 16:55, 6 March 2020 (UTC)[reply]

Changes

Adding a bit more to the History section. MRS4H9 (talk) 15:13, 10 April 2020 (UTC)[reply]

Editing sources for updated History section. SummJ9385 (talk) 03:26, 11 April 2020 (UTC)[reply]