Knife factory websites read alike. Everyone does everything in-house and everyone has strict quality control. We say some of that too. The way to tell factories apart is to ask questions that only have one honest answer, and to ask for the record behind it.
These are the questions we'd want a new customer to ask us. They're grouped roughly in the order a project runs.
Who actually makes the blade?
Ask for the process route of your knife, step by step, with who does each step and where. A factory that machines handles and assembles knives but buys finished blades is a different supplier from one that cuts, grinds and heat treats the blade itself. Both exist. Only one of them controls the part that decides whether the knife is any good.
Heat treatment is the step to press on. If it's done outside, ask who does it and how batches are tracked between the factory and the heat treater. If it's done in-house, ask to see the furnace and the hardness log for a recent batch of the steel you plan to use.
Coatings are the usual exception. PVD and DLC are often done by specialist shops, including for us. That's fine, as long as the factory inspects the parts when they come back and can tell you who did the work.
Which steels have you run in volume?
A factory can list twenty steels on its website. Ask which ones it has actually run in production quantities in the last year, and what hardness range it holds them to. Powder steels such as CPM-S90V or M390 punish loose heat treatment and slow grinding more than 14C28N or D2 do. A shop that mostly runs 8Cr13MoV may still quote you M390, and then learn on your order.
Ask for the test method too. Rockwell hardness on a test coupon and on the actual blade are not the same thing.
What becomes the reference for production?
Every factory makes samples. The question is what happens after you approve one. A good answer is that the approved sample becomes the reference that production and inspection are checked against, and that a small pilot run comes before full volume. If the reference is "the drawing" and nothing else, expect arguments later about edge geometry, lock-up, action and finish, which drawings rarely pin down.
Ask about sample fees as well. Many factories, us included, charge for samples and refund the fee when you order. That is a normal arrangement. Unclear sample costs usually mean unclear costs elsewhere.
Who owns the tooling?
If you pay for tooling or molds, they should be yours, kept for your production and not used for anyone else. Get that in writing. It matters most for handle molds and stamping dies that define the look of your knife.
On confidentiality, ask for an NDA before you send drawings that aren't public. Most OEM factories will sign one. Then ask the practical version of the question: who inside the factory will see your files, and do they also sell their own designs? Some factories, us included, offer open designs that brands can start from. Ask how your custom work is kept separate.
Where is inspection done, and what happens when something fails?
"100% inspection" means little without knowing what is inspected and when. Ask where the inspection points sit in the process. On our knife lines there are eight, starting with incoming material and ending with final inspection before packing. Ask which checks are dimensional, which are functional (lock, detent, action, sharpness) and which are visual.
Then ask what happens when a batch fails. The answer you want is specific: the affected parts are isolated, that portion of production stops, the cause is found and fixed, and only then does production restart. Ask whether you can send your own inspector or a third-party firm before shipment. The answer should be yes.
What are the real MOQ and lead time?
MOQ for knives depends on the steel, the handle material, the mechanism and how much tooling is new. A single number quoted before anyone has seen your drawing is a sales number. Ask for the MOQ per model after the factory has reviewed the design, and ask whether a smaller trial order is possible for the first run.
Lead time works the same way. Our typical production lead time is two to three months, longer for new or complex products. Ask what the clock starts from (deposit, approved sample, materials in stock) and what usually delays it.
Where will the knife be made, and what origin will it have?
If the factory has more than one site, ask which one will make your knife and why. If you sell into the US or EU, ask where the blade itself is formed. Origin follows the blade, which we covered in more detail in Moving Knife Production from China to Vietnam.
Before the first call
You don't need a finished design to start. A sketch, a reference knife, target materials, rough quantities, a target cost and the market you're selling into are enough for a first review. If you'd like us to answer these questions for your own project, send us what you have.