Primary process: Shearing / Blanking / Punching. The full route, materials, tolerances and design tips for a knife blank, with an indicative cost.
Shearing / Blanking / PunchingPrimary process
Sheet formingFamily
7Route steps
+/-0.2mmTypical tol.
A knife blank is primarily made by Shearing / Blanking / Punching. Shearing and blanking cut flat stock with a punch and die, slicing sheet metal to a profile in one stroke. Below is the full route to make a knife blank, 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 knife blank is made
The usual route, raw material to finished part. The amber step is where the knife blank gets its basic shape.
Material
Select the sheet grade and gauge for the knife blank.
Blanking
Cut the flat blank, by laser for low volume or a blanking die at scale.
Tooling Low (laser) to high (die) Tolerance ±0.05 to 0.3mm Lead days to weeks
Shearing / Blanking / Punching
Form the blank into the knife blank.
Tooling Low (laser) to high (die) Tolerance ±0.05 to 0.3mm Lead days to weeks
Secondary features
Punch or drill the holes and cut-outs the part needs.
Tooling None Tolerance ±0.05 to 0.2mm Lead hours to days
Joining
Spot weld, fasten or bond into the assembly where the knife blank is more than one piece.
Tooling Medium Tolerance joint Lead immediate
Finish
Deburr the edges and powder coat or plate for protection and colour.
Tooling Low Tolerance adds 0.05 to 0.2mm Lead days
Inspection
Check formed dimensions, hole positions and flatness.
Need the real cost for a knife blank? 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 knife blank
Grade
Why it suits this
Mild steel CR/HR
Cheap, formable
Stainless 304
Corrosion, finish
Aluminium 5052
Light, corrosion
Design
Design tips
General pointers. The full design-for-manufacturing list for a knife blank is in the dossier.
Holes too close to the edge.Keep >=1x thickness from edge.
Tight nesting-unfriendly shape.Simplify outline.
Cost
What a knife blank should cost
Flat blanks; laser for low volume, blanking die for high. Priced by sheet area and nesting yield.
PER-PART COST vs VOLUME
Per-part cost drops as volume spreads tooling and setup over more parts. The exact figures for a knife blank at your volume, in your currency, are in the dossier.
MODEL EST.
$2.0 to 5.5per 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 knife blank 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
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A knife blank is primarily made by shearing / blanking / punching. The route is: Material; Blanking; Shearing / Blanking / Punching; Secondary features; Joining; Finish; Inspection.
What does a knife blank cost?
It depends on size, tolerance and volume. As a rough ballpark it starts around $2.0 to 5.5 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 knife blank made from?
Common choices are Mild steel CR/HR; Stainless 304; Aluminium 5052.
What is the main process for a knife blank?
Shearing / Blanking / Punching. Flat blanks and simple sheet parts in high volume.
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.
