Engineering
DFM and materials notes for plastic parts and mold steel selection.
7 guides · page 1 of 1
P20 vs H13 Mold Steel for Injection Molds
P20 vs H13 mold steel comparison for injection molds: hardness, life, polishing, cost and when each grade fits OEM…
Read guide →Plastic Part DFM Checklist for Injection Molding
Practical plastic part DFM checklist: walls, ribs, draft, gates, sinks and tolerances before you RFQ China injection…
Read guide →Die Casting Defects: Porosity, Cold Shuts, Flash and How to Prevent Them
Die casting defects such as porosity, cold shuts, flash, soldering and cracks: causes, die and process fixes, design rules and how to test parts.
Read guide →CNC Machining Tolerances Explained: What Should You Actually Specify?
Learn standard CNC tolerances, ISO 2768 and ISO 286 fits, how tolerance affects cost, and how to specify only what your part needs, with an example.
Read guide →Injection Molding Defects: Causes and Fixes for Sink Marks, Warpage, Flash and More
Troubleshoot sink marks, warpage, flash, short shots, weld lines and more. See likely causes, process and tool fixes, and design changes that prevent them.
Read guide →Design for CNC Machining: Ten Design Mistakes That Increase Cost
Ten common CNC design mistakes, from sharp inside corners to deep pockets and blanket tolerances, and how to fix each one to cut cost and lead time.
Read guide →Plastic Material Selection for Injection Molding: ABS, PC, PP, PA, POM and More
Compare ABS, PC, PC/ABS, PP, PA, POM, PBT and PMMA for injection molding. Learn how to choose by strength, heat, chemicals, appearance, shrinkage and cost.
Read guide →Need a project quote?
Send drawings for free DFM · reply ≤12h · quote ≤24h on complete RFQ.