Why Your CNC Quote Takes 3 Days

You send an email to a supplier. Then you wait. Not because the part is complicated. Not because the machinist is backed up. The delay happens because of everything that has to occur between your email and a part quote. Here is what that process actually looks like, and why it adds up to three days or more.

Email is slow

Some RFQs go straight to a machinist. Most don't. Either way, email itself is slow. Someone has to open the email, read through the attachments, and organize the part information before any quoting work starts. A single RFQ can include a CAD file, a drawing, a quantity breakdown, and a note about finish or material. Someone has to pull all of that together before they can even begin.

Timezone lag makes this worse. If your supplier is in China or Southeast Asia, a question you send at 9am your time might not get read until 9pm your time. One exchange can cost a full day, and most quotes need more than one.

Follow-ups add more time

Quotes stall waiting on missing information. Maybe the supplier needs a Pantone color for a finish. Maybe your 3D file doesn't specify a tolerance (3D files never do, only 2D drawings carry tolerance callouts) so the supplier has to ask for a 2D drawing before they can quote accurately. Maybe they need a quantity break you didn't include.

Each clarification is another email, another wait, another chance for your RFQ to fall to the bottom of someone's inbox. Multiply this by however many parts are in the quote, and the delays stack.

What a manual quote actually involves

This is where most of the three days actually goes. Once an estimator has your file and drawing, here is the work they have to do before a price comes back to you.

Reviewing the geometry. The estimator opens the CAD file and looks at the part feature by feature. They're checking overall size against the machine's work envelope, counting the number of setups the part will need, and looking for anything that will slow the job down: deep pockets, thin walls, small internal radii, undercuts, or features that need a specific tool length. On a multi-part RFQ, this happens for every single part.

Reading the drawing for tolerances and finish callouts. The estimator goes through the 2D drawing line by line, flagging any tolerance tighter than standard shop capability, any surface finish requirement, and any GD&T callout that affects how the part gets fixtured and measured. A tight tolerance on one feature can change the entire machining strategy for the part.

Estimating machine time. There's no automated calculation here. The estimator draws on experience to estimate cycle time: how many operations, how many tool changes, what feeds and speeds are realistic for the material, and how long setup and fixturing will take. Two estimators looking at the same part can land on different numbers because this step is judgment, not math.

Checking material. The estimator confirms what raw material stock is on hand or needs to be ordered, checks current material pricing, and factors in lead time if the material isn't in stock. Material cost and availability can shift week to week, so this has to be checked fresh for every quote.

Factoring in tooling. If the part needs a custom fixture, a special cutting tool, or a fourth-axis setup the shop doesn't run often, the estimator has to price that in separately. This often means a quick conversation with the machinist who will actually run the job.

Building the quote. Finally, the estimator takes all of this (cycle time, material cost, tooling cost, quantity breaks, margin) and builds it into a spreadsheet, part by part. On an RFQ with ten or twenty parts, this step alone can take hours.

All of this is manual, judgment-based work, done by hand, one part at a time. It's why quoting takes days instead of minutes, and why two suppliers can quote the exact same part differently. There's no shared calculation behind it, just an estimator's read on the file.

DFM feedback, if you get it at all

Good suppliers flag design issues while they quote: a wall too thin to hold up in production, a hole too deep for standard tooling, a tolerance that will spike cost without adding value.

But DFM takes extra time on top of the quote itself. When a supplier is buried in RFQs, it's the first thing to get skipped or rushed. So you either wait longer for feedback, or you get none and find out about the issue after parts are already cut.

Purchasing adds its own delay

The three day quote is just the quote. It doesn't include what happens after your part is approved and ready to go.

Once you're ready to buy, you still need to create a PO, wait for the supplier to send an invoice, and then make payment before the order is confirmed. This step usually isn't counted in the "3 day quote" timeline, but it still has to happen before your parts get made. So the real time from RFQ to a confirmed order is often longer than three days once purchasing is factored in.

What this adds up to

None of these steps takes three days on its own. Add them up and you get: slow email, follow-ups, manual quoting, DFM if you're lucky, and then purchasing on top of all of it. Three days is the fast case, and it doesn't even include getting the PO through.

The problem isn't the part. It's that every step is manual and sequential, with a human waiting on another human at each handoff.

Why OpusFab exists

We know all of this takes time, because we've done it by hand. That's why we built OpusFab.

Upload your part and get an instant quote with instant DFM feedback, so you know about a design issue before you commit to it instead of after. Once you're ready to order, purchasing is part of the same platform, not a separate email chain. You get live status on your part from quote to delivery.

The process that used to take three days now takes 30 seconds, purchasing included.

Try it now.