Help to find the most suitable 3d printing service

[Gambo]

Each of the systems you mention are based on fusing powdered metal either directly in DLMs which uses a very powerful laser to sinter powder layers in a similar way to SLS sinters polymer powders the other 2 process stick powder together one way another then burn the glue out and sinter the powder together. all of them will need postprocessing to get a mirror finish.1 method you haven't mentioned is investment casting (the lost wax process) by which a model of the final part is printed on an ordinary FDM printer using a wax like filament The resultant model is then coated in clay which is allowed to dry and the wax melted out to give a mould for normal metal casting. Most of the postprocessing of the model can be done on the simply worked wax before casting. Most areas have casting works used by sculptors and others.of the 4 methods I would use the lastIncidentally a lot of jewelry is made by the lost wax process in all sorts of metals even precious metals