Short Production Runs

Between one-off prototypes and high-volume contracts sits the work many shops handle worst: a few dozen to a few hundred parts, needed on a date, identical every time. Short runs are a core service at CAD Custom, not a distraction from bigger contracts.

Repeatability is built in deliberately. Fixtures, programs and inspection steps are locked down against the first article, and in-process checks run across the batch — so part forty measures like part four. Because programming and machining live under one roof in Banks, Oregon, a revision between runs is quick and inexpensive rather than a new project.

Repeat orders start from a proven setup instead of from scratch. You get consistent parts, honest scheduled lead times, and documentation that travels with the batch.

The gap between prototype and production

Manufacturing has an awkward middle. High-volume houses want annual contracts and six-figure quantities; prototype bureaus want one-and-done novelty. In between sits an enormous amount of real work — the fixture a production line needs eight of, the bracket a machine builder needs sixty of, the housing a product launch needs three hundred of — and it is chronically underserved. Big shops treat it as a distraction; small shops treat it as a windfall to improvise through.

CAD Custom treats the short run as a discipline of its own. The quantities are modest, but the requirements are not: every part must match the first, the batch must land on a date, and the price must make sense without volume magic. Meeting those requirements takes deliberate engineering — locked-down programs, repeatable fixturing, inspection woven into the run — applied at a scale where it actually pays.

If you have ever had a fifty-part order treated as too small to matter or too irregular to schedule, this page describes the alternative: a shop in Banks, Oregon that considers your quantity a normal job, plans it like a production contract, and prices it like the well-understood work it is.

How repeatability is actually built

Two identical parts are never an accident. Repeatability is engineered in before the first chip, through decisions that stay fixed for the life of the run.

It starts with the first article. The initial part is machined from the proven Mastercam program and measured completely — height validation on the granite plate, optical comparison where profiles matter. Those numbers become the contract for the batch: the fixtures, the program, the tool list and the touch-off scheme are locked against them, and from that point the run is an exercise in not changing anything.

Then the run is monitored, not just started. Tools wear; materials vary lot to lot; a hundred small drifts want to creep in. In-process checks at sensible intervals catch drift while it is still correction-sized rather than scrap-sized. The 3+2-axis workholding on the Haas VF2 helps here too — parts completed in fewer clampings have fewer opportunities to accumulate error, so consistency is partly a geometry decision made back at programming time.

The result is boring in the best way: part forty measures like part four. Your assembly line, your customers and your sleep all benefit from that boredom.

What drives cost in short-run machining

Short-run pricing confuses buyers because two quotes for the same part can differ wildly. Understanding the real cost drivers makes you a sharper customer anywhere you shop.

Setup is the tyrant of small quantities. Programming, fixturing and first-article proving cost roughly the same whether the run is five parts or five hundred, so at low quantities, setup dominates unit price. This is why a shop that keeps proven programs on file quotes repeat runs meaningfully lower — the engineering is already paid for. It is also why doubling a small quantity rarely doubles the price; ask for the next quantity break when you quote.

Beyond setup, the drivers are honest and physical: material (both the alloy itself and how much of it becomes chips), the number of clampings the geometry demands, the tightness and quantity of toleranced features, and finishing requirements. Tolerances deserve special mention — a tolerance costs money everywhere it appears, because it must be held and then verified. Drawings that apply precision only where function demands it are consistently the cheapest to produce.

CAD Custom quotes from the simulated program, so these drivers are counted rather than guessed — and where a small print change would cut real cost from the run, you will hear about it before anything is cut.

Scheduling honestly

Every shop promises dates. The difference is in how the promise is constructed. A date backed by counted machine-hours from a simulated program, a known setup plan and visibility of the shop's actual queue is a commitment; a date produced to win the order is a hope with a calendar attached.

Short-run scheduling at CAD Custom is built the first way. Because cycle time comes out of the Mastercam simulation, the machine-hours in a batch are arithmetic, not intuition. Because programming, setup and inspection all happen under one roof, the schedule has no hidden dependencies on outside vendors for the core work. What remains variable — chiefly material availability from suppliers — is flagged as a risk when it exists, rather than absorbed silently into an optimistic promise.

You are told what the shop knows: when the run can start, how long the machining actually takes, and where the uncertainties sit. If a date cannot be met honestly, you hear that up front, while you still have options — not in a week-late apology. Small manufacturers live and die by their reliability upstream; the aim here is to be the vendor whose dates you can build your own promises on.

Documentation and the value of a repeat order

When a run ships, the job is not deleted — it is archived, deliberately. The proven program, the fixture design, the tool list, the first-article measurements and the in-process check results all stay on file, indexed to your part and revision. That archive is an asset, and it is yours in every way that matters.

The obvious payoff is the repeat order. When you need the same part again next quarter, the run starts from a known-good state: no re-programming, no re-proving, no re-learning. Quotes come back faster and lower, lead times shorten, and — critically — the parts match the last batch, because they are made from literally the same recipe and measured against the same baseline.

The subtler payoff is revision control. When rev B arrives, it is diffed against the archived rev A: what changed, what that change touches in the program and fixturing, and what it does to cost. You get an informed answer instead of a fresh-quote shrug. Over a product's life, this continuity quietly compounds into real money and real reliability.

Bring the part, the print and the quantity; the form below starts the quote. If it is work the shop has run before, say so — the archive will be doing some of the lifting.

Who runs short — and why it works

The short run is the natural quantity for a surprising range of customers. Aerospace and defense suppliers need small batches of high-documentation hardware between design freezes. Agricultural and heavy-industry operations need runs of wear parts and rebuild components sized to a season, not a warehouse. Marine and clean-energy builders work in project quantities — one vessel, one installation, one array at a time. And the tech sector, from AI hardware to emerging-technology startups, iterates too quickly to commit to volume: they need this month's revision in the dozens, made well, with the freedom to change next month.

What these customers share is a need most volume shops cannot serve: production discipline without production quantities. Locked programs, repeatable fixturing, in-process inspection and honest documentation — at forty parts, not forty thousand.

Can a short run become a standing arrangement? Yes. Once a part is proven, recurring batches are the easiest work in the shop: the archive holds the recipe, the schedule holds a slot, and each release is quoted from known numbers. Customers with predictable consumption often coordinate releases against their own demand rather than warehousing a year of parts.

And when volumes genuinely outgrow the shop? You will be told so, plainly — with a complete, documented manufacturing package (model, drawing, first-article data) that makes moving to a volume producer clean. The archive that served the runs becomes the handoff that protects them. Either way, the engineering you paid for stays yours.