CASTING PROCESSES WE CAN QUOTE:

Investment Casting utilizes either a shell mold or a solid mold to render a tightly toleranced casting.  If you are looking for your castings to be produced in the USA by a   qualified New England Foundry, you have come to the right place!   Investment castings can hold tolerances ± .010 or better. Castings sizes   range from smaller than a quarter of an inch up to the size of a loaf   of bread. We can quote either solid mold or shell mold investment   castings. We pour a wide variety of metals including but not limited to: Aluminum, Steel, Stainless Steel, Brass, Bronze, Copper, Silver. Often times, cost reduction  can be realized through casting vs. machining parts depending on the   number and nature of the part. Machined-like net shapes can often be   achieved at a greater value. ISO Certified. Rapid Prototyping available.   Finishing, plating and painting available. 

• Thompson Investment Casting 

Commonly poured metals: Gray and Ductile Iron, Aluminum, Stainless, Bronze, Brass, Copper and more. Short run quantities are easily attained through this process as well as long run.

Certificates  of  compliance, Chemical/physical analysis, Heat treating, X-ray and compliant standards for all commercial and military applications upon request.
 Quotes for new patterns in requested material available. Gray Iron, Ductile Iron and Aluminum castings up to 1000 lbs. Tolerances ± .030 or  better. ISO certified. Rapid prototyping. Finishing, plating  and  painting available.

Permanent Mold Casting is similar to sand casting utilizing aluminum or steel match plates.
Typical tolerances range from ±0.002 in. to ±0.015. The  surface finish  has a higher surface finish than that of sand casting,  ranging from  125 to 300 microinches.
Finishing, plating and painting available.  

A casting process where metal is injected into a mold under high pressure. Die Casting gives excellent dimensional accuracy  typically 0.1 mm for the first 2.5 cm (0.005 in. for the first inch)   and 0.02 mm for each additional centimeter (0.002 in. for each   additional inch). Thinner walls can be cast as compared to sand and permanent mold casting (approximately 0.75 mm (0.030 in.). Inserts can be cast-in (such as threaded inserts, heating elements, and high strength bearing surfaces). Reduces or eliminates secondary machining operations.  Rapid production rates are standard. Casting tensile strength as high   as 415 MPa (60 ksi). Metals commonly cast: Aluminum, Zinc, Zamac (Zinc,   Aluminum, Magnesium, and Copper). Finishing, plating and painting   available. ISO Certified. Rapid prototyping available. 

MIM (Metal Injection Molding) excels at producing small, complex components  that require thin, uniform cross sections (up to .250 inch). The   process consists of mixing fine metal powders with thermoplastic binders   to form a feedstock which is injection molded into a closed mold.  After  ejection from the mold, the thermoplastic ” binders” are  chemically or  thermally removed from the part so that the part can be  sintered to high  density. During the sintering process, the individual  particles  metallurgically bond together as material diffusion occurs to  remove  most of the porosity left by the removal of the binder. The  economics of  the MIM process favors higher annual part volumes. Tolerances are typically +/- 0.5, down to +/- 0.001 inch for very small dimensions. The density of the part is then > 98%, taking porosity out of the equation and giving infinite detail opportunities. Finishing, plating and painting available.