Answer
Fixture Lead Times at Program Launch, and How Rush Works
The standing numbers for a build-to-print fixture, what fills them, and where rush helps and where it cannot.
A custom weld, assembly or check fixture quoted here runs 4-6 weeks standard, 1-2 weeks rush, or 6-8 weeks extended when timing is flexible, with the quote back in 24-48 hours. A 6061 or MIC-6 base with drilled and reamed details fits the standard window with room to spare; hardened A2 or D2 details take longer, and the quote gives the real date. Send the print through the quote form and the quote states lead time as its own number, with rush priced separately.
Updated September 2026
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What fills 4-6 weeks on a fixture
Material is rarely the long pole on an aluminum fixture. Cast tooling plate is a distributor stock item: Key Metals lists MIC-6 in 1/4 in through 2 in thicknesses with a thickness tolerance of ±0.005 in (keymetals.com/aluminum/Mic6_Cast_Aluminum_Plate.html), and ATP-5 is Vista Metals’ equivalent plate. 6061-T6 plate and bar are stock everywhere. A base in any of them gets cut to size in the first days of the job, which is why a plain aluminum fixture from the custom fixtures page sits inside the standard window with room to spare.
Hardened details set the schedule on a fixture that carries them. An A2 or D2 locator, rest pad or wear strip is called out at a hardness on the print: Hudson Tool Steel’s D2 data sheet puts tempered hardness at 58-60 HRC for the usual balance of wear resistance and toughness and 62-64 HRC for maximum wear resistance (hudsontoolsteel.com/technical-data/steelD2). Rush 1-2 weeks applies to machined parts with no secondary operations. Heat treat, grinding, EDM and finishing add time, and the quote gives the real date. Hardware such as toggle clamps, dowel pins and drill bushings is catalog stock and ships in days. A finish called out on the print is quoted with the part; parts leave for finishing after machining and come back before inspection.
How a program launch sequences its fixtures
Weld and assembly fixtures come first because nothing gets built without them. On an automotive or off-highway launch the tooling order usually runs: weld and assembly fixtures before the first parts, check fixtures before the first parts go to the customer for approval, then duplicates for a second line, a second plant or the customer’s own receiving inspection.
Work backward from the customer’s approval date. If that date is fixed, the check fixture has to be in your hands with time to run real parts through it, correlate it against a CMM and fix whatever the correlation shows. Count 4-6 weeks back from that date, plus the trial time you want, and you have the date the print must be finished and quoted. Lead time starts at order approval. Put your need date in the part description and the quote answers it. Programs that order the check fixture the same week as the weld fixture rarely need rush; programs that order it after the first parts are off the tool usually do. Who makes custom check fixtures covers the fixture itself; the automotive and motorsport page covers the parts that pass through it.
What makes a fixture quote fast or slow
A complete print with datums and fit classes quotes at the fast end of 24-48 hours; a model alone takes a round of questions first. The quote needs to know which surfaces are datums, which holes are reamed to a dowel fit and which are clearance, what flatness the base carries and over what area, and which details carry a hardness callout. A STEP model with a PDF print answers all of that on the first pass. A model by itself leaves every hole tolerance and hardness call open, so the quote either asks or assumes, and assuming is how a fixture ends up with a tenths-class fit where a clearance hole would do. What to send for a custom fixture lists the print items in order.
Hardware called out by maker and part number quotes fastest. A toggle clamp named on the print is a line item; "clamp, buyer to advise" is a hold. McMaster-Carr lists hold-down, push/pull and latch-style toggle clamps as catalog items (mcmaster.com/products/toggle-clamps/), and dowel pins, drill bushings and quick-release pins are as easy to name. One material also quotes faster than three: a fixture that is all 6061 with steel dowels gets one material check; a MIC-6 base with 4140 risers and D2 wear pads gets three, plus a check of the hardness callout on the D2. None of this stops a quote; it moves it toward the far end of the window.
How rush works here, and what it needs from you
Rush is 1-2 weeks, quoted as its own number beside the standard price, and you choose. Rush needs three things from the buyer: a complete print, because a rush quote with open questions is not a rush; a decision inside the quote window, so the material order goes out the same day; and any hardware you already own shipped ahead, so it is waiting when the machined pieces come back. The two prices differ because rush buys queue position and expedited material, not a different part; the fixture, its tolerances and its inspection are identical. Rush CNC parts covers the same 1-2 week window for machined parts in general, and CNC machining lead time covers what fills the standard weeks.
Splitting the order is the other lever. A weld fixture that has to be standing at your weld cell before its hardened details can be finished ships as a base plate with its soft details first, with the hardened locators and wear pads following on their own date; the fixture goes to work on setup while the last details are in process. The same split works on a check fixture: base, risers and datum pads first, hardened net pads and gauge pins behind. Ask for the split on the quote request and the quote prices the two shipments separately, with a date on each.
What rush does not change, and where it cannot help
Inspection on receipt does not shrink for rush. Every fixture comes back inspected against its print before it ships. A rush fixture gets the same inspection as a standard one, and a detail that misses the print does not ship, rush or not. That is the whole point of a check fixture: one that is itself out of tolerance passes bad parts, and check fixture vs gauge explains why the fixture has to hold tighter than the part it checks.
A hardened and ground D2 detail cannot be rushed the way a 6061 base can. That is multi-step work the rush window does not cover, and grinding a detail to a tenths-class size is its own operation on its own schedule, described on the precision grinding page. A rush quote on a fixture with hardened details says so plainly: the aluminum comes inside the rush window, the hardened pieces come as soon as their steps allow, and the quote gives both dates. A print can call the first-build wear pads in pre-hardened 4140 and the production set in hardened D2; the steel page covers those grades, and custom fixture cost covers what rush and hardened details do to the price.
Questions
Before you send a job.
01 How long does a custom fixture take?
Standard lead time is 4-6 weeks from an approved quote and rush is 1-2 weeks, with the quote itself back in 24-48 hours. An all-aluminum fixture in 6061 or MIC-6 with catalog hardware fits the standard window with room to spare. A fixture with hardened A2 or D2 or ground details takes longer, and the quote states that date.
02 Is there an option slower than 4-6 weeks?
Yes. Extended is 6-8 weeks, the third choice on the quote form next to rush at 1-2 weeks and standard at 4-6. It fits a duplicate fixture for a line that starts next quarter, or a spare held against a crash, where nothing is waiting on the date. It carries no price claim in either direction. Pick it on the form, or say so in the request, and the quote states the longer window as its own number.
03 Can a check fixture be rushed to meet a launch date?
Yes, at 1-2 weeks, if the print is complete and the details are machined with no secondary operations. Hardened or ground details take longer. Count backward from the date the first parts go to your customer for approval: the fixture needs to arrive with time to run real parts and correlate against a CMM. If hardened net pads cannot make the rush date, the base and datum pads ship first and the pads follow, and the quote gives both dates.
04 What do you need from me to quote a rush fixture?
A complete print with datums, fit classes and hardness calls, a STEP model, hardware called out by part number, and a decision within the quote window so the material order goes out the same day. Hardware you already own can ship ahead. The rush quote sits beside the standard 4-6 week quote so you can compare the two.
05 Does rush change how the fixture is inspected?
No. Rush or standard, the inspection is the same, and a detail that misses the print does not ship. Rush buys queue position and expedited material; it does not buy a shorter inspection.
06 Can I get the base plate before the hardened details?
Yes. Ask for a split on the quote request and the quote prices two shipments: the base, risers and soft details first, then the hardened A2 or D2 locators and wear pads on the date the quote gives for them. Weld and assembly fixtures often go to work on setup with the first shipment while the last details are in process.
Related
Where to go next.
Custom fixtures
Weld, assembly and check fixtures built to your print.
View →Rush CNC parts
The 1-2 week window for machined parts, and what it needs.
View →What to send for a fixture
The print items that make a fixture quote fast.
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