What Post Tuning Covers On Your Shop Floor
Post tuning is the practical fine-tuning of an existing post processor so it produces code that matches how your machine is actually run. We work on cycle options, tool change behaviour, feed and speed formatting, safe start lines, comments, header and footer layout, coolant calls, subprogram handling and the small details that make a post easier for operators to trust.
This service is useful when a post already works, but the output needs a cleaner format or must follow a shop rule that was missed during setup. Common requests include metric or imperial output, separate lines for important commands, different decimal formats, shorter tool call blocks and removal of unnecessary code that clutters the program. On some machines a tiny change can save minutes on every job and reduce manual edits at the control.
- Cycle and format adjustments for routing, milling, turning and plasma
- Safer start and end blocks for operator preference
- Cleaner comments, numbering and tool change lines
- Output matched to your control, machine limits and shop standards
Typical Issues We Correct During Tuning
Most post tuning jobs start with a simple complaint: the code runs, but it is not neat, not consistent or not ideal for the way the shop works. We see posts that repeat commands too often, miss the preferred G and M codes, place tool changes in the wrong order or use formatting that confuses the programmer at 4 pm on a Friday. In some shops the issue is not the machine itself, but the way the operator expects to see the code laid out.
We also tune for practical conditions in South African workshops. That can mean accounting for power interruptions and restart habits, keeping programs easy to verify after load-shedding, or making sure the post does not rely on a control feature the machine does not have. In coastal shops, where humidity and downtime planning matter, a clearer output format often helps teams recover faster after a stop-start production day.
- Incorrect or awkward cycle output
- Unwanted spaces, tabs or line formatting
- Tool change order that does not suit the machine
- Missing or extra commands around drilling, pockets or cuts
- Output that forces too many manual edits before release
How Our Tuning Process Works
We keep the process direct. First we review the current post, the machine control and one or two sample files from your normal work. Then we note what the post is doing now and what you want changed. If needed we test the output against a known good program from your shop or against the machine manual so the result stays practical.
Once the changes are defined, we tune the post and run a short validation round. That may include checking a toolpath in routing software, verifying a milling program with common tool changes or confirming plasma lead-ins and pierce settings. If the shop wants it, we also provide guidance for the programmer and operator so the new output is used properly from day one.
- Review of the current post and sample jobs
- Change list agreed before editing begins
- Testing against real parts or proven programs
- Delivery with notes on what changed and why
Turnaround For Centurion And Nationwide Shops
Turnaround depends on the complexity of the post and how much testing is needed. A small formatting change can often be handled quickly, while a post that must behave differently for multiple machines may need a longer review. For shops in Centurion, Pretoria, Johannesburg, Vereeniging, Durban and Cape Town, we can handle the process remotely in most cases and only attend on site when the machine or workflow needs hands-on checking.
Simple post tuning jobs are handled once we have the files and the required machine details. More involved work, especially where a control has unusual preferences or the shop uses several machines with different behaviour, can take more work. We prefer to be clear about the scope up front, because a rushed post can cause more downtime than the original issue.
If your shop is under pressure to release work, we can prioritise the most urgent format issues first so production keeps moving while the broader tuning is completed. That is often the best option when a programmer needs a clean file for same week use.
Pricing Approach And What Affects The Fee
Post tuning is priced according to the amount of work involved, not just the number of lines changed. A simple cycle format update is a different job from a full review of tool change logic, start blocks, safe retracts and comment style across several machine types. The main drivers are the complexity of the existing post, the number of revisions needed, the machine control and whether on-site verification is required.
We quote once we have seen the current output and understood the shop requirement. That keeps the price fair and avoids guessing. For businesses that need ongoing adjustments as new machines or new work types come in, an annual support plan can reduce the cost of repeated small changes. Many shops find this more practical than paying for each minor tweak as a separate emergency task.
- Scope of change: formatting only, or logic changes too
- Single machine versus multiple machine variants
- Remote only or on-site verification required
- Urgent turnaround requests and after-hours support
Maintenance Intervals For Reliable Output
Posts should not be treated as a once-off job and forgotten. As machines, tools and programmers change, the post may need small updates to keep pace with the shop. We usually recommend a review after major software updates, after a new machine is added, after a control retrofit, or when the shop starts producing a new part family that uses different cycles or tooling strategies.
For active shops, a six to twelve month review cycle is sensible. High-volume routing and plasma shops often benefit from more frequent checks, especially if there are multiple operators changing settings or if the files are being sent to different branches. Small maintenance visits or remote review sessions can prevent a pile-up of manual edits later. It is cheaper to tune early than to fix bad output after the operators have already built workarounds.
When the post is stable, we can also help document the approved settings so the team keeps the same output standard across programmers and shifts. That matters in shops where one person writes the job and another person runs it later in the week.
Key facts
| Service type | Post tuning for existing CNC posts |
|---|---|
| Machines supported | Routing, milling, turning and plasma |
| Delivery method | Remote support or on-site where needed |
| Typical turnaround | 2 to 5 working days for smaller changes |
| Coverage | Centurion, Pretoria, Johannesburg, Vereeniging, Durban, Cape Town and nationwide |
| Maintenance interval | Recommended review every 6 to 12 months |
