Hole and shaft fits explained
A practical guide to hole and shaft tolerance designations, clearance, transition and interference fits, with a worked H7/g6 example.
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Practical manufacturing guides
Short enough for the shop floor, complete enough to explain the decision behind the calculation.
How to estimate CNC machining cost
A transparent method for estimating material, machine time, setup cost, price per part and margin for CNC machining quotes.
Read guideCNC speeds and feeds explained
A practical milling guide to cutting speed, chip load, RPM, feed rate, hardness, engagement and safe starting values.
Read guideWorst-case vs RSS tolerance stack-up
Compare worst-case and root-sum-square tolerance stack-up methods, their assumptions and a worked signed-dimension example.
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