If your dies aren't clean enough to inspect accurately, they aren't clean enough.

Every die pulled prematurely costs production time you cannot recover. Every hour your die correctors spend working on an inadequately cleaned bearing face is an hour not spent on actual correction. And every inspection that misses a fault because the die surface was not clean enough sends that problem to the press.

Die shop efficiency lives or dies on the quality of your cleaning process. If your current method leaves residual aluminium, discolouration, or caustic trace on the bearing surfaces, everything downstream, inspection accuracy, correction quality, and die success rate, is compromised before it begins.

Vapormatt has designed and manufactured wet blasting machines for aluminium extrusion die shops for decades. We invented the process. We built the machine the industry relies on.

Watch the Vapormatt Cougar+ with single load end process aluminium extrusion dies

Why conventional die cleaning falls short at the bearing surface

The caustic soda dip is essential, but it is not sufficient. It removes bulk aluminium effectively. What it leaves behind, fine residual particles, carbonisation, discolouration from heat and pressure, is precisely what makes accurate die inspection difficult.

vs. shot blasting: Steel shot removes contamination aggressively but with poor control over the bearing surface. Complex port holes and intricate bearing profiles are not reliably reached, and the process cannot begin until the die is fully dried after the caustic rinse, adding non-productive time to every cleaning cycle. The abrasive impact also risks unwanted material removal at the die edges: the sharp, precise geometry that defines the bearing surface can be dulled or deformed, requiring corrective work before the die returns to press.

vs. manual polishing: Skilled die correctors are expensive and finite. Applying their time to cleaning work that a machine should handle is a structural inefficiency that compounds across a full day's die volume.

Find out more about wet blasting vs. other finishing processes

Watch the Vapormatt Cougar+ automatic wet blasting machine with double load ends process aluminium extrusion dies

The bottom line

A die shop running shot blasting or manual polishing carries costs it does not need: extended cleaning cycles, inconsistent bearing surface quality, and die corrector time spent on preparation rather than correction. Wet blasting eliminates each of these at the source. Dies leave the machine clean enough for accurate inspection, geometrically intact, and ready for correction or nitriding.

The most useful next step is a direct conversation. Tell us your die volumes, your profile mix, and where your current process is costing you -- we will tell you exactly what the improvement looks like.