At Church Metal Spinning, tooling is the foundation of repeatable quality. We engineer, machine, validate, and maintain tools so every part meets print, performance, and delivery requirements. Our process integrates DFM, disciplined documentation, and in-house machining to shorten lead times and improve finishes.
Process & Tooling Concept
Every job begins with a forming review: internal/external tooling, blank or cylinder, follower selection (single/multiple; manual or automated change), and any secondary forming such as beading or trim-to-size (cutting tool or laser/BAE). We confirm if a single or multiple spin process is optimal, whether pre-form operations (press or spin) are required, and we involve tooling design early to capture geometry and tolerances.
We critique prints, note tight/duplicative tolerances, verify materials (standard vs. special), confirm thickness approach (nominal vs. approximate), and identify any additional requirements (e.g., special weld wire). All notes are resolved or included as quote clarifications; marked-up prints and email summaries are captured in the estimate/ERP packet.
Tool Materials & Sourcing
We match tool steel to geometry, wear, lead time, and cost:
- A2 – General forming; hardened, re-cut capable; typical tool ≤18″; bar or burnout as size dictates; higher cost.
- D2 – High wear resistance; hardened, re-cut; typical tool ≤12″; high cost.
- 4140A / 4140 Pre-Hard – Fast-turn, medium runs; up to ~24″ typical; bar ≤18″, larger via burnout; medium cost.
- A36 – Prototype/low volume; any size; fast turn; low cost.
We source from trusted American suppliers to support quality, traceability and U.S. manufacturing.
In-House Toolmaking
To maintain full control over quality and lead time, we machine and refurbish tools in-house on our CNC lathe platform—selected for its intuitive HMI, rigid construction, and accuracy. We import DXF geometry, program feeds/speeds/passes, machine the form in A2 tool steel, heat treat to 58–60 HRC, then true the mount and final forming surface before production deployment.
Development Runs & Validation
After tooling delivery, we execute pilot production runs—typically 5–10 parts—to confirm blank size, tool life and part performance. Typical development hours: 4–8 hours for straightforward parts, 8–12 hours for complex shapes. Materials like stainless (especially 304 SS) may require re-cutting of the tool to hit final diameters—add 3–5 hours when required.
Blank Estimation & Yield
As a starting rule: blank diameter ≈ minor diameter + two-thirds of part height, adjusted for laser trim and yield. For rolled/welded cylinders, a starting diameter × length model is used. These estimates are refined using historical data and internal yield tables.
Integrated Manufacturing Flow
Tooling quality and design impact each step of production. Our integrated flow includes:
- Laser blanking and material prep
- Rolling and welding (for cylinders or cones)
- Pre-forming (press/spin)
- Primary spinning
- Trimming, beading, laser finishing as needed
- Welding, fitting, cleaning, finish operations
- Final inspection, packing, and shipment
Our quality and production teams validate each stage to ensure dimensional, surface and cosmetic standards are met.
Strategic Partner Collaborations
We enhance our tooling and machining capabilities by working closely with reputable external specialists:
- T.D.C. Engineering, Inc., located in Campbellsport, Wisconsin, specializes in precision CNC machining, fixtures, EDM and grinding. Their advanced equipment and skilled collaboration allow us to accelerate part machining services when volumes or geometries extend beyond standard internal run-rates.
- JP Pattern, Inc., a Milwaukee-area family-owned leader in investment die and lost-wax tooling, has served the metal-casting industry since 1964. Their in-house tool design, ISO certification, and extensive capacity across molds, machining and short-run production enable integrated support when tooling demands include casting patterns or complex assemblies.
Together, these partners extend our toolmaking and finishing ecosystem, ensuring you benefit from broader capabilities while maintaining a single point of engineering and production accountability.
Tool Maintenance & Quality Assurance
Tooling at Church Metal Spinning is actively maintained. We inspect, polish, and refresh key forming surfaces between runs to maintain consistent finishes and tolerances. We track tool life, store tooling fixtures properly, and ensure documentation is complete: routing sheets, marked-up prints, CAD models, material certifications, and customer-approved specs.
Why It Matters
Precision tooling defines the quality of every spun metal part. It drives part accuracy, repeatability, and overall cost-efficiency. Our holistic tooling approach—internal design, trusted materials, in-house machining, development validation and strong partner network—ensures you get dependable results, scalable throughput and predictable deadlines.
Our tooling program reflects how we work: precise, documented, performance-driven, and partner-enabled. From engineering review through production launch, we stand ready to build tooling that fits your forming sequence, supports your material needs and delivers parts that meet your specification. We believe in making quality tooling that doesn’t just make parts—but enables production confidence.