Part overview
Part name
Helical Pin Guide
Material
1.2083 / AISI 420
Volume
120 pcs / month
Surface finish
Ra 0.4 & Ra 1.6 zones
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建议内容：Before / After 3D 模型对比（等轴测 + 截面视图并排）
红色区域 = Ra 0.4 精密面 · 黄色区域 = Ra 1.6 标准面
【在此处替换图片】
建议内容：Before / After 3D 模型对比（等轴测 + 截面视图并排）
红色区域 = Ra 0.4 精密面 · 黄色区域 = Ra 1.6 标准面
What we changed
Original process
Ra 0.4 surface: Mirror EDM — slow, expensive, and the dominant cost driver at $38.75/pc
Ra 1.6 surface: CNC Turning only
Optimized
Redesigned process
Ra 0.4 surface: Slow Wire Cut with Angle — identical finish, no EDM setup cost
Ra 1.6 surface: CNC Turning + Milling
The Ra 0.4 specification is unchanged. Slow Wire Cut with Angle achieves the same surface quality on these geometry features — the process change is invisible to the functional performance of the part.
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建议内容：生产现场照片 — CNC 机台加工中 + 成品放置在夹具托盘的特写
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建议内容：生产现场照片 — CNC 机台加工中 + 成品放置在夹具托盘的特写
Cost breakdown
| Process | Before (per pc) | After (per pc) | Change |
|---|---|---|---|
| Mirror EDM | $38.75 | — | Eliminated |
| CNC Turning | $2.87 | $3.89 | +35.5% |
| Slow Wire Cut w/ Angle | — | $9.30 | Added |
| CNC Milling | — | $1.23 | Added |
| Total per part | $41.62 | $14.42 | −65.4% |
| Total 120 pcs / month | $2,081 | $721 | −65.4% |
| Total 1,440 pcs / year | $24,972 | $8,652 | −65.4% |
Why this matters for your RFQ
When we quote your part, we’re not just pricing the drawing as-given. We look at the full process stack and flag wherever a geometry adjustment or process swap can hit the same spec at lower cost. That review is included in every quote — no consulting fee, no NDA required for a first look.
If you’re running a part that uses EDM for a precision surface, it’s worth a conversation. Slow Wire Cut handles a wider range of geometries than most buyers expect, and the cost difference is often significant at mid-to-high volumes.