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Engineering Guides

Sharpen how you specify, quote and review manufactured parts. These 8 practical references are written by the engineers who run our presses and machining centres - tell us where to send it and we reply with the file.

Isometric illustration of an open two-plate injection mold beside molded parts with a cost breakdown motif What Drives Injection Molding Cost: Tooling, Cycle Time and Volume Where the money actually goes in a molded part, and which decisions are cheap to change now and expensive later. Get the guide Isometric illustration of three injection molds of increasing plate count standing side by side Mold Construction Explained: Single-Plate, Two-Plate and Three-Plate Tools How the runner and parting line decide gate location, appearance, cycle time and price. Get the guide Isometric illustration of two mold blocks, one aluminium and one steel, balanced on a beam Aluminum or Steel Tooling: Choosing by Volume, Resin and Wear A practical answer to the most common tooling question, with the cases where the cheap option is not cheap. Get the guide Isometric illustration of a cut-away molded housing with ribs, fillets, bosses and draft callouts Designing for Molding: Walls, Ribs, Draft and the Defects They Cause The geometry decisions that decide whether a part moulds clean or spends its life in rework. Get the guide Isometric illustration of the molding process chain: hopper, screw barrel, nozzle, mold and finished part The Molding Process End to End: From Dried Resin to a Held Dimension What happens between the pellet and the part, and where each defect is introduced. Get the guide Isometric illustration of resin pellets pouring from a hopper beside textured sample coupons Plastic Material Selector: Behaviour on the Press, Not on the Datasheet Shrinkage, moisture, flow and stiffness: the properties that decide whether a resin works here. Get the guide Isometric illustration of a stepped row of surface coupons from mirror gloss to matte texture with a spray nozzle Plastic Surface Finish and Texture: Specifying It So the Right Thing Arrives Gloss, texture and mold finish, and how to write a requirement a shop can actually meet. Get the guide Isometric illustration of metal bar stock, a hexagonal billet, a machined bracket and a crystal lattice Engineering Metals Overview: Stock, Machinability and Finish The alloys we cut and cast most, what each one is chosen for and what it asks of the process. Get the guide