what is sand and die casting??
113727
Here is a very simple explanation of the two methods, there are a lot of fine details in each process that are not discussed here.\n\nIn sand casting, a mold of the object to be cast is made using sand that is compacted around the object. The mold is typically in two halves. After the impression is make, the object is removed, the two halves put together and the casting material is poured in. After setting up, the mold is taken apart and the casting removed. In the process, the impression in the sand is lost. To make another casting, the whole procedure is repeated.\n\nFor die casting, a metal mold is made in the reverse shape of the object to be cast. Again the mold is typically in two halves, the halves are joined and the casting material poured in. After cooling, the halves are taken apart and the casting removed. With this method, the mold is still intact so additional copies can be make. Only certain metals, like lead, can be die cast. This method is useful for material like plastics.
216296
I assume you asked about HolloyWood FX.\nIts a graphics utility used in Video Editing Program to produce transition effects between scenes.
581735
Its a sandard notation for machinary parts
520563
WOW, thats a tall order.  The altered cast technique is used to take a final impression after the framework comes back from the lab, before having the denture processed.  It is used to compensate for tissue changes, and is believed to provide a better final denture base,  Used mainly on lower distal extension dentures, where support needs to  be maximized to  prevent bone loss.  I have only had to do this once since dental school. \n\nAs far as technique try the website listed above.  \n\nyou really need to see it.
178840
Cast is melted and poured, wrought is pounded and formed in a semi-solid to solid state.
1071540
Here are sevral site for nascar die cast cars:\n\nhttp://www.raceworldnc.com/\n\nhttp://www.gomotorbids.com/\n\nhttp://www.diecastdepotshop.com/\n\nhttp://www.rpmdiecast.com/\n\nhttp://www.yddsp.com/NASCAR_07.htm\n\nhttp://www.suesraceshop.com/\n\nhttp://www.smokinjoediecasts.com/\n\nhttp://search.ebay.com/diecast-cars-nascar_W0QQfkrZ1QQfnuZ1\n\n\nGood luck in finding what you want!
77515
How We Do It From http://rapidtoolinc.com\n\n1. E-mail us your STL file. \n\n2. We enter your STL file into the sinterstation. \n\n3. A layer of powdered material is spread. As the process begins, a precision roller mechanism automatically spreads a thin layer of powdered SLS material across the build platform. \n\n4. Sinter a cross-section of the STL file. Using data from the STL file, a CO2 laser selectively draws a cross section. It selectively "sinters" (heats and fuses) the powder creating a solid mass that represents one cross section of the part. \n\n5. Repeat. The system spreads and sinters layer after layer until the object is complete. \n\n6. Remove the part. Once the part is complete, remove it from the part build chamber and blow away any loose powder. \n\n7. Finish as desired. Use the part as is-or sand, anneal, coat, or paint it before using it for its intended application. \n\n8. Fed Ex your parts to your door, typically within 2-3 days.
682917
Good Luck\nhttp://aresgalaxy.sourceforge.net/
583234
bulk density /(moisture content - 1) is equal to dry density.\n\nBulk density = weight of wet soil collected from the hole / volume of the hole\n\nVolume of hole = wt. of sand transferred into hole / bulk density of sand\n\nWeight of sand = Total wt of sand in cylinder before pouring - (wt of sand in cylinder after pouring+wt of sand in cone)\n\nBulk density of sand and wt. of sand in cone are determined in laboratory. for details on that write to nobodyat34@yahoo.co.in
725982
I suspect there is an open-source product that would be free and pretty competitive to CAD.  Give http://www.sourceforge.net a try to see if such a product exists.\n\nEdit:  found this http://sourceforge.net/projects/brlcad/
579981
Iron and water.  Just wash the sand off the iron.
888545
the same methods as with fiberglass. If you want a good finish the parts should be reverse laid into the mold with a gel layer. If it is a completed project you still need to sand it and put on a layer of gel-coat before sanding and finishing. Depending on the material used in laying up the part you might get ways with auto body glaze. The material matters because glass is usually laid up will plastic but carbon is sometimes laid up with Epoxy for greater strength.
559098
Moulding or mould??? Do you want to make a hull or trim one out? Very different processes.
981890
Reproduction detail\n1. use of finer sand, \n2. Hydrostatics of the molten metal \n3. same as in #2\n4.Hmmm?\n5.To avoid air voids :). \n6. Not enough water and the sand will crumble, too much water the medium will be too fluid or too much of steam will be produced during casting damaging the mold from inside out.
813218
Try the following website if this may be useful :\n\nwww.conexindia.com/copper_casting_alloys_datachart_CDA/copper_casting_alloys
61977
It's "Whiteheart" cast iron which is cast iron that is cast white and made malleable by annealing in an oxidising medium so that substantial decarburization occurs and the remaining carbon is precipitated in the form of graphite nodules.
34438
Sand was not invented.  It was created naturally by waves or other force erroding pieces of quartz (a rock) and making it smaller.