Written by the people who run the machines, not by the people who sell them.
Four notes published, more in preparation — each answers a question a buyer actually asked us, and each is written so you can decide something after reading it.


The five callouts that decide the quote — and the two missing from most drawings.
Read the note →
How to place your bore on the right line — and the two cases where the obvious choice is wrong.
Read the note →
Why the bore moves after the tool passes, and the four things to specify so it doesn’t.
Read the note →
How to tell whether your part belongs to the class no catalogue machine can hold.
Read the note →Four subjects, all decided by the drawing, not the calendar: material behaviour — what makes Inconel, P550 and 316L-class stainless hard to machine, and what to specify because of it; process decisions — which deep-hole process your part needs, and why the finish cut sits after heat treatment; fits and finishing — the parts where the fit is the part; buying and compliance — what a classification society checks, and what an EN 10204 3.1 certificate actually proves.
Stated once: every topic traces back to a question a buyer actually asked; every post contains something checkable — a number, a limit, a standard, a failure mode; nothing here sells, and nothing here names a customer, shows a drawing, or gives away a process route. We write about problems, not about our solutions to them.
When there is something worth writing. We would rather publish eight real pieces than fifty thin ones.
Yes — privately, in writing, to you. Nothing you send us becomes public without your explicit agreement; every post here is built from general process knowledge, never from a customer’s drawing.
No. Cases on this site are described by engineering facts, numbers and certificates only. Customer names, drawings and part photographs do not appear.
Send it. Within 24 hours an engineer replies with manufacturability feedback — and if other buyers are asking the same question, it may become the next note.
Related: Deep-Hole Drilling|Gun Drilling|Materials Hub
