Technical Knowledge Center &
Engineering Resources
Access technical manufacturing guides, DFM best practices, material selection matrices, and OEM purchasing strategies authored by Conwhole custom hardware engineers — designed to optimize your component sourcing and design decisions.
Explore Manufacturing Knowledge Hubs
Structured engineering resources designed to optimize your hardware sourcing and design decisions.
PRACTICAL PURCHASING TOOLS
Download Engineering Checklists & DFM Guidelines
Speed up your component RFQ process and prevent costly manufacturing revisions with our standardized technical references created for mechanical engineers and OEM buyers.
- ✓ Sheet Metal Bending Clearance & Hole Proximity DFM Matrix
- ✓ International Material Equivalency Chart (ASTM, DIN, JIS, GB)
- ✓ Surface Treatment Salt Spray Hours & Thickness Reference
Need Direct DFM Feedback?
Upload your STEP or DXF files to receive a comprehensive DFM feasibility report and unit price quotation within 24 hours.
Q1: Are the guides and DFM recommendations based on actual production data at Conwhole?
Yes. Every technical guide, tolerance recommendation, and cost comparison is authored by Conwhole senior mechanical engineers based on real manufacturing experience across our laser cutting, CNC machining, welding, and surface treatment operations.
Q2: Can I request a customized DFM review for my proprietary mechanical drawings?
Absolutely. We provide non-disclosure agreements (NDA) prior to receiving drawings and deliver formal 3D CAD DFM feedback detailing hole clearances, bend radii, tool accessibility, and cost-reduction opportunities within 24 to 48 hours.
Q3: How does Conwhole assist with international material specification conversions?
Our material engineers cross-reference overseas standards (ASTM, AISI, EN, DIN, JIS) with local mill certified materials (GB), ensuring exact chemical composition and mechanical strength equivalency along with complete MTR certification.
Q4: Do you offer free sample evaluation before mass production?
Yes. For qualified OEM manufacturing projects, we produce pre-production prototypes accompanied by full CMM dimensional inspection reports and material test certificates for client sign-off.
Have a Technical Question or Complex Engineering Drawing?
Send your STEP/CAD files to Conwhole engineering team. Receive a comprehensive DFM feasibility review, material analysis, and unit price quotation within 24 hours.