Guides / Cost
Comparing Swiss Machining Quotes Without Getting Caught Out
September 21, 2026
Send one drawing to three shops that run Swiss-type lathes and you can get three prices that differ by more than you expect. The reflex is to assume someone is padding. That is rarely what happened.
Most of the gap comes from the shops answering slightly different questions, because the RFQ left room to. This guide covers how to close that room and how to read what comes back.
Why quotes diverge
Six causes account for most of the spread.
Assumed quantity. If you asked for 500 pieces and gave no forecast, one shop quoted 500 as a standalone order while another assumed repeat business and spread setup accordingly. The minimum order quantity guide covers how sharply this moves price.
Setup treatment. Some shops show setup as a separate line, some fold it into the part price. Two quotes are not comparable until you know which.
Material and bar condition. Ground bar for guide bushing work costs more than standard drawn bar. A shop planning bushing-less mode on a short part buys cheaper material and leaves a shorter remnant. Both are legitimate, and they produce different numbers. The guide bushing article explains the difference.
Secondary operations. Passivation, plating, heat treatment, deburring method, cleaning, packaging. This is the single largest source of scope confusion, and it is covered in the secondary operations guide.
Inspection and documentation. A first article report covering every characteristic, in-process records and a certificate of conformance with each lot is real work. A shop that assumed a basic dimensional check quotes lower and delivers less.
Tolerance interpretation. Where a drawing is ambiguous, a cautious shop quotes the tighter reading and a confident one quotes the looser. The cautious shop is not wrong, and it will look expensive.
Normalize before you compare
The fix is mostly upstream. A complete RFQ removes the room to diverge.
Include:
- STEP file and 2D drawing at a stated revision
- Material grade, condition and any certification required
- First order quantity and expected yearly volume
- Price breaks at the quantities you would realistically buy
- Every secondary operation, with its standard
- Inspection scope: first article format, sampling, what data ships with each lot
- Packaging and labeling
- Required delivery date
- Which tolerances are functional, marked on the drawing
- Whether setup should be shown separately
Item 10 costs nothing and makes every quote readable at a glance. Ask for it every time.
A comparison worksheet
When the quotes arrive, put them side by side on these rows rather than on the headline price.
| Row | What to extract |
|---|---|
| Quantity quoted | Confirm all three quoted the same |
| Setup | Separate line or embedded |
| Part price at each break | The curve, not one point |
| Material grade and condition | Ground or drawn, certified or not |
| Secondary operations included | List each one explicitly |
| Inspection scope | FAI format, sampling, data supplied |
| Packaging | Format and quantity per container |
| Lead time, first order | Broken into stages if possible |
| Lead time, repeat order | Often very different |
| Tooling charges | One off, and who owns the tooling |
| Payment and delivery terms | Incoterm, currency, payment timing |
| Validity | How long the price holds |
Rows that differ are your question list. Most gaps close once you ask.
Questions that surface hidden differences
Ask every shop the same five:
What did you assume that is not on my drawing? The most productive question in sourcing. A shop that answers specifically is one that read the drawing.
Which callouts drive the price, and what would you relax first? You often get a change you can accept for free.
What is the repeat order price? Tells you the real steady state cost once setup is behind you.
What is not included? Direct and effective. Ask it explicitly rather than assuming the quote is complete.
Who owns the tooling if I paid for it? Matters if you ever move the job.
Reading the low quote
A quote well below the others is information, not a prize. Work out which:
- It excludes something the others included
- It assumed a looser tolerance interpretation
- It assumed a cheaper material condition
- It assumed a larger quantity or repeat business
- The shop has a machine free and wants the work
- The shop has misunderstood the part
The last one is the expensive case, because it surfaces at first article or later. A quick call usually distinguishes it. A shop that has understood a part talks about it specifically: the L/D ratio, the tight feature, the thread, the material behavior. A shop that has not talks in generalities.
Beyond price
Once scopes match, price is one input among several.
Capacity and queue. A shop with the right machine free next week quotes a different date from one booked for a month. Neither is better as a business, but one fits your schedule.
Material experience. A shop running your alloy daily is a different proposition from one taking it on for the first time.
Inspection capability. Confirm the equipment for your tightest feature exists and is calibrated. The inspection guide covers what to ask.
Communication. How quickly and how specifically a shop answered your questions during quoting is a fair sample of what working with them is like.
Repeat behavior. Whether they keep programs and tooling, and how they price a blanket order.
A worked comparison
Two quotes on the same small stainless part, 2,000 pieces. Quote A is 18 percent below Quote B, and the reflex is to take A.
Reading them properly:
| Quote A | Quote B | |
|---|---|---|
| Quantity | 2,000 | 2,000 |
| Setup | Included in part price | Shown separately |
| Material | 303, standard drawn bar | 303, ground bar |
| Passivation | Not mentioned | Included, to a named standard |
| First article | Basic dimensional check | Full report, all characteristics |
| Packaging | Bulk | Bagged in counted quantities |
| Lead time | 4 weeks | 6 weeks |
Quote A is not cheaper. It is quoting a different job. Once passivation, the inspection report and the packaging are added, the numbers land close together, and the remaining gap is explained by the bar condition, which is a process choice each shop made from the geometry.
The lead time difference is now the interesting question rather than the price, and it probably comes down to machine queue or the outside processor’s schedule.
None of this required expertise. It required putting the quotes on the same rows.
Total cost, not part price
A few costs sit outside the quoted number and are worth weighing on a part you will buy repeatedly.
Inventory. A price break at 10,000 pieces is only a saving if you use them before the design changes.
Quality cost. Parts that arrive needing sorting, or a lot held while a measurement disagreement is resolved, cost more than the price difference that attracted you.
Schedule risk. A shop with a long queue on repeat orders creates either safety stock or line stoppages, and both have a price.
Requalification. Changing supplier later means a new first article and, in regulated work, potentially more. Choosing partly on whether you would be happy to stay is rational.
Communication load. A shop that needs three emails to answer a question consumes your time on every order.
What not to do
Do not split the order across three shops to test them. You pay setup three times and get three processes to qualify.
Do not share a competitor’s number to push price down. It invites a shop to match it by trimming scope you will not notice until delivery. Share the scope difference instead and ask for a requote on the same basis.
Do not treat a quote as a commitment on anything not written in it. If lead time, inspection or packaging matters, get it in the document.
Our guide to the Swiss machining quote covers the steps before and after the comparison.
Getting comparable quotes in one step
The reason to send one complete RFQ rather than three separate emails is that every shop then sees the same scope. Send the drawing, material, quantities, secondary operations and inspection requirements through the RFQ form. We match the part with up to three shops that run Swiss-type lathes and reply within 24 business hours.
For the underlying mechanics of how a Swiss quote is built, the cost guide walks through each line with a worked example.
One habit is worth keeping whatever route you use. Write down, before the quotes arrive, what you expect the part to cost and why. When a number lands far from that expectation in either direction, you then have a specific question to ask rather than a general unease, and that question is usually the one that uncovers the scope difference.
Frequently asked questions
Three quotes came back 40 percent apart. Is one shop overcharging?
Usually not. Gaps that large almost always come from scope differences: a different material condition, secondary operations included or excluded, a different assumed quantity or a different inspection level. Normalize the scope before concluding anything about price.
Should I always take the lowest quote?
Only after the scopes match and you have checked capacity, lead time and inspection capability. A low quote that excludes passivation, assumes a looser tolerance or comes from a shop with a full machine queue is not the lowest total cost.
Is it worth telling shops what the other quotes were?
Sharing a number invites a shop to match it by quietly reducing scope. Sharing the scope difference is more useful: tell a shop that another quote included plating and ask them to requote on the same basis.
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