Bremer Manufacturing specializes in very complex, close tolerance aluminum sand castings.

Bremer Manufacturing specializes in very complex, close tolerance aluminum sand castings.We are ISO certified and an approved tier #1 and #2 supplier to diesel and internal combustion engine manufactures and metalworking companies throughout the United States.

Primary alloys include aluminum silicon (300 series) and aluminum-magnesium (500 series). All electric melting. Four Hunter automatic, Green sand molding lines are used for high to medium volume parts from ounces to 50 pounds. Low volume and prototypes castings up to 125 pounds are produced on our Airset/Nobake molding line.`


If you have a general idea of what you want to make, these factories will help refine your idea and think through the different components that involve the making of your idea.


This stage involves gathering all the necessary materials needed to make your product. Some factories provide materials and assembly; sometimes you will need to buy materials separately.


A sample is a prototype of your idea. Sample-makers usually make the product by hand (hand-cutting, hand-assembling, etc.) before you get your tooling finalized. You want your sample to be perfect if you plan to do mass production of your product.

(Usually sample-makers charge more per product, but this depends on the factory’s policy.)


"Production run" means making a lot of one product at once. The factories listed under "production" can produce small and/or large quantities. The minimum order for a production run can vary from factory to factory (some have no minimum, some require a dozen, and some require up to 1,000 to be made at once)