Primary process: Sinker EDM. The full route, materials, tolerances and design tips for a sharp corner, with an indicative cost.
Sinker EDMPrimary process
Non-traditionalFamily
5Route steps
+/-0.01mmTypical tol.
A sharp corner is primarily made by Sinker EDM. Sinker EDM erodes conductive metal with electrical sparks between a shaped electrode and the part in a dielectric fluid, with no cutting force. Below is the full route to make a sharp corner, the materials it suits, the tolerances to expect and the main design points. The route is free, from the finder.
Step by step
How a sharp corner is made
The usual route, raw material to finished part. The amber step is where the sharp corner gets its basic shape.
Stock
Prepare the conductive or sheet stock for the sharp corner.
Heat treatment first
Harden the material before cutting: EDM cuts hardened metal with no distortion.
Tooling n/a Tolerance can distort Lead days
Sinker EDM
Cut the sharp corner to its precise profile with no mechanical force.
Tooling Medium (electrode) Tolerance ±0.005 to 0.05mm Lead 1 to 3 weeks
Deburr and finish
Remove the recast layer or edge burr and finish as needed.
Inspection
Check the profile and surface against the drawing.
Need the real cost for a sharp corner? The free route above is yours. Unlock the full dossier to quote and source it.
Where this process typically lands. Tighter is possible with extra operations like grinding, at higher cost.
Materials
Materials for a sharp corner
Grade
Why it suits this
Tool steels (hardened)
EDM after hardening
Carbide
Very hard
Design
Design tips
General pointers. The full design-for-manufacturing list for a sharp corner is in the dossier.
EDM for features millable normally.Mill where possible.
Zero-radius internal corners.Allow a small radius.
Cost
What a sharp corner should cost
Sinker EDM for sharp internal corners, deep cavities, hardened material; slow, so priced by burn hours.
PER-PART COST vs VOLUME
Per-part cost drops as volume spreads tooling and setup over more parts. The exact figures for a sharp corner at your volume, in your currency, are in the dossier.
MODEL EST.
$120 to 205per part at 1 off
A rough ballpark only. The dossier gives should-cost at your exact volume and currency, with the full breakdown.
GET THE FULL DOSSIER
Everything you need to quote and source it
The free route above is yours. To actually put a number on a sharp corner and buy it well:
Should-cost at your exact volume in 12 currencies, with the material, processing, tooling and overhead breakdown
Who to source from, typical MOQ and lead time, and the exact RFQ checklist to send
A quote checker that tells you if a supplier quote is fair, and the red flags to watch
SistematikWork is a whole IE platform. Past the free finder, there are 41 ready Excel calculators, templates and CAD guides, each built from real coursework and checked against known values.
Manufacturing & OperationsQuality & ReliabilitySupply ChainProject & StatisticsEngineering Career
A sharp corner is primarily made by sinker edm. The route is: Stock; Heat treatment first; Sinker EDM; Deburr and finish; Inspection.
What does a sharp corner cost?
It depends on size, tolerance and volume. As a rough ballpark it starts around $120 to 205 per part at 1 off and falls with quantity. The dossier gives should-cost at your exact volume and currency. A model estimate, not a quote.
What material is a sharp corner made from?
Common choices are Tool steels (hardened); Carbide.
What is the main process for a sharp corner?
Sinker EDM. Hardened steel, fine detail, sharp internal corners and deep cavities, as in moulds and dies.
See the exact route and should-cost for your part
The free finder maps your part to its process and full route. Pro adds should-cost at your volume, sourcing and an RFQ draft.
