Process fit
The part is checked against the intended process: stamping, forming, machining, coiling, moulding, casting or assembly. The limits of that process, not a generic checklist, drive the note.
The drawing read before the tool is cut.
A drawing that looks simple can hide a bend, a tolerance or a finish that makes the part expensive or unstable. We review the part as a manufacturer, name what can and cannot be held, and put the cost of holding it on the table before tooling.
- DFM notes written by the engineer who reads the drawing
- Tolerance and process limits stated before quotation
- Support around the part, not a design house
At a glance
- Stage
- Design and drawing review
- Input
- Drawing, 3D model or performance requirement
- Output
- DFM note, risk list and costed options
- Next step
- Drawing freeze, prototype or tooling
Why this service exists
Most avoidable cost is designed in before a supplier is chosen: a tolerance tighter than the process can hold, a bend too close to a hole, a plating that traps hydrogen, a wall section that cannot fill.
Our design and engineering support is a review of the part against the process that will make it. We do not take over your product design. We tell you which features will decide the price and the yield, and what change would remove the problem.
What the review covers
Tolerance and capability
We identify the dimensions that decide function, the tolerance the process can hold, and the inspection method that will prove it. A tolerance that cannot be measured is not a specification.
Material and finish
The grade, temper, plating and coating are reviewed against the duty: current, spring force, corrosion, solderability or contact resistance. Where a finish creates a risk, we name it.
Cost and yield
The features that add cost are identified separately: extra stations, tighter tolerances, secondary operations, special packaging. You see the cost of the requirement, not just the total price.
How the review runs
It starts with the drawing and ends with a decision you can quote against.
01
Drawing and duty
We read the drawing with the application in front of us: what the part does, what it mates with, and what happens if it is at the wrong end of tolerance.
02
Feature review
Critical features, process limits, material and finish are reviewed. Each risk is tied to a specific dimension or note, not a general comment.
03
Options and cost
Where a change would remove cost or risk, we show the change and its effect. The decision stays with you.
04
Freeze and quote
The drawing is frozen, the inspection method is agreed, and the quotation is built against the part that will actually be made.
What we review, and why it matters
Critical dimensions
The question
Which tolerance decides fit or function?
What it changes
Process, gauge and inspection plan
Bend and form
The question
Can the radius, relief and hole distance be held?
What it changes
Tool design and scrap rate
Material
The question
Does the grade and temper suit the duty?
What it changes
Formability, spring force, conductivity
Finish
The question
Does plating or coating create a risk?
What it changes
Hydrogen bake, masking, contact resistance
Assembly
The question
Can the part be located, joined and tested?
What it changes
Fixtures, sequence and poka-yoke
Inspection
The question
Can the drawing be measured as written?
What it changes
Gauge, sampling and record format
What you send
- The drawing and 3D model, with the revision.
- The application: what the part does and what it mates with.
- The performance requirement, even if it is not on the drawing.
- The volume and the market the part will be sold into.
What you get
- A written DFM note tied to specific features.
- The process route and the limits that come with it.
- Costed options where a change would remove cost or risk.
- A quotation against the frozen drawing.
Limits, stated plainly
- We do not replace your product design team or take responsibility for the design intent.
- CAD, CAM and CAE support is available where the engagement calls for it; it is support around the part, not a design house.
- A design change is a recommendation, not an instruction. You decide what changes.
Where it fits
The service is used with these products and the tools that support the drawing.
Questions buyers ask
Do you charge for a drawing review?+
A first review is part of quoting. Where the work needs a formal DFM report, tolerance stack, CAD support or a review meeting, we scope it separately so you know what you are buying.
Can you work from a 3D model instead of a drawing?+
Yes, for review and quotation. Production still needs a controlled drawing with the critical dimensions, tolerances, material, finish and inspection method. We can help identify what the drawing is missing.
Will you sign an NDA before seeing the drawing?+
Yes. A mutual NDA is signed before a drawing changes hands. Your drawing is used only for your part and is not shown outside the chain that makes it.
Do you provide CAD, CAM or CAE work?+
Where the engagement needs it, support is available before the drawing is final. The scope is agreed in writing. We are not a design house and do not take over the product design.
What if the drawing cannot be made as written?+
We say so before quoting. The note names the feature, the process limit and the options: change the drawing, add an operation, accept a different yield, or choose another process.
Send the drawing
Email us at contact@qumek.com. We respond within 12 hrs.
Your enquiries are confidential with us and we proceed with manufacturing only after signing a NDA.