US Tech Automations

Other dated records weekly, one new pack a week Sample ready

Changeover atlas: 24 solved scheduling instances a week

Planners and owner-operators at small job shops get 24 solved changeover schedules a week to check their own sequencing against. 24 small production-scheduling instances, generated on 12 Oct 2026, each with the job order a planner would naively run and the best order our solver found. Together they save 6,991 synthetic changeover minutes (72%). Nothing here was measured in a real factory.

Price
$49/mo
Built for
Planners and owner-operators at small manufacturers who search for production scheduling templates and changeover reduction spreadsheets
Cadence
one generated pack a week, built by an automatic weekly job from that week's dated seed. A pack always holds 24 instances or the build fails and the page says so
Public sample
Sample ready

Subscribe — $49 a month$49 a month buys one file a week with 24 already-solved shop shapes. Each has 1, 2 or 3 machines; 6, 8, 10 or 12 jobs; and one changeover rule family. You get a table of changeover minutes, the obvious job order, the best order our solver found, minutes saved, and the job order on each machine. Nothing in it is measured from a real factory: every figure is generated by our solver from a starting value tied to the date. Billed monthly. Cancel at month end by email. No account.

What is in this week's file24 instances, pack of 12 Oct 2026

Nothing on this page was measured in a real factory. Every instance below was generated by our own solver from a dated seed. The changeover minutes are made up to be plausible for the rule family named; the saving is real arithmetic on those made-up minutes. You pick the instance whose shape matches your shop and use its order as a starting guess, then re-run the same arithmetic on your real changeover times to see if it still wins. The order was worked out on made-up minutes, so it is a head start, not an answer. The Saved % column shows how much the job order matters for that shape; it is not what your shop will save.

12 of the 24 instances, biggest saving first pack of 12 Oct 2026
InstanceRule familyMachinesJobsNaive minutesBest foundSavedSaved %
CA-2026-10-12-07size progression11279523755870%
CA-2026-10-12-05size progression11063719744069%
CA-2026-10-12-06tool family1105249542982%
CA-2026-10-12-14size progression21057216440871%
CA-2026-10-12-24size progression31256115540672%
CA-2026-10-12-15size progression21257717740069%
CA-2026-10-12-22tool family3104526338986%
CA-2026-10-12-08allergen clean-down11248112535674%
CA-2026-10-12-23size progression31250816034868%
CA-2026-10-12-13colour sequence21049915734268%
CA-2026-10-12-19allergen clean-down383591734295%
CA-2026-10-12-21size progression31043512630971%

Across all 24 instances the naive order costs 9,747 changeover minutes and the best order we found costs 2,756, a saving of 6,991 minutes (72%). "Best found" means best our search found, not proven optimal. A different solver may find better.

Saving by rule family4 rule families in this pack

Summed across the instances in each family, this pack only.

All four rule families pack of 12 Oct 2026
Rule familyInstancesNaive minutesBest foundSavedSaved %
allergen clean-down284014269883%
colour sequence41,34448885664%
size progression115,3591,7293,63068%
tool family72,2043971,80782%

What you get

  • One file a week24 instances: 1 machine x 6 jobs, 1 machine x 8 jobs, 1 machine x 10 jobs, 1 machine x 12 jobs and on up to 3 machines x 12 jobs, spread over four rule families. Each file holds exactly 24 instances, so not every machine, job and rule-family combination appears in every file.
  • Eleven columnsInstance id, pack date, rule family, machines, jobs, naive minutes, best-found minutes, minutes saved, saved %, the busiest machine's minutes (how long the most-loaded machine runs, so you can see the bottleneck), and the sequence to run per machine. The free sample on this page leaves out the sequence column; the sequence column is the one you pay for.
  • The matrix behind every rowA JSON twin of the file carries each instance's job labels, the full changeover-minutes matrix, the naive order and the best order, so you can re-check the arithmetic.
  • The free sample is this week's file without the sequence columnEvery shape and every saving is public. The order to run is what you pay for.

Limits, plainly. The instances are generated, not measured. The shapes are bounded: at most 3 machines and 12 jobs. The minutes are synthetic. Best found is not proven optimal. Nothing is built for your factory: you match a shape and take its order as a starting point, then check it on your own minutes. If your shop has more machines, more jobs, or changeover times that depend on more than the job before, this file does not fit.

Newest pack dated 12 Oct 2026. If the next weekly pack does not get built, this page says so instead of showing the old one as new.

See the file before you pay

You do not have to take our word for what is in the file. Here are 24 rows of the real thing, carrying all 10 of its columns, straight out of this week's pack. The minutes are solver-made, like every figure here; these are the real pack rows, not a tidied demo.

  • Open the 24 rows as a CSVA plain spreadsheet file. It saves to your machine rather than painting itself into a browser tab, and it opens in Excel, Numbers or Google Sheets.
  • The same 24 rows as JSONThe same rows again, laid out for reading with code.

What arrives after you pay: After you pay, Stripe sends you to a page carrying your own payment reference. That week's file appears at that address, and a new one each week for as long as the subscription runs. A week we could not build says so rather than repeating the last one. Nobody emails you.

What you would be paying for: $49 a month buys one file a week with 24 already-solved shop shapes. Each has 1, 2 or 3 machines; 6, 8, 10 or 12 jobs; and one changeover rule family. You get a table of changeover minutes, the obvious job order, the best order our solver found, minutes saved, and the job order on each machine. Nothing in it is measured from a real factory: every figure is generated by our solver from a starting value tied to the date. Billed monthly. Cancel at month end by email. No account. After you pay, Stripe sends you to a page carrying your own payment reference. That week's file appears at that address, and a new one each week for as long as the subscription runs. A week we could not build says so rather than repeating the last one. Nobody emails you.

These 24 rows are a slice of the file, not the whole of it. What we cannot show you here is how far back it goes: the weekly file. Each week's file is posted at the address Stripe shows you after payment, one new file per week while the subscription runs; keep a copy of any file you want to keep, because we do not promise to hold past weeks for you.

Start the thread

$49/mo · one generated pack a week, built by an automatic weekly job from that week's dated seed. A pack always holds 24 instances or the build fails and the page says so

Subscribe — $49 a month

Refunds: if what you receive is not what the page describes, email operations@ustechautomations.com within 7 days for a full refund. Support: same address, replies within 2 business days.

$49 a month buys one file a week with 24 already-solved shop shapes. Each has 1, 2 or 3 machines; 6, 8, 10 or 12 jobs; and one changeover rule family. You get a table of changeover minutes, the obvious job order, the best order our solver found, minutes saved, and the job order on each machine. Nothing in it is measured from a real factory: every figure is generated by our solver from a starting value tied to the date. Billed monthly. Cancel at month end by email. No account. After you pay, Stripe sends you to a page carrying your own payment reference. That week's file appears at that address, and a new one each week for as long as the subscription runs. A week we could not build says so rather than repeating the last one. Nobody emails you.

Rather ask first? Email operations@ustechautomations.com. We tell you the shapes and the savings before you pay.