You approved FAI, released production, and still ended up with drifting dimensions, fit failures, or rejected batches. That sequence is common — and it’s not
Your CNC parts are finished, but the material certificates are missing. At that point, shipment and compliance approval are at risk, even if the parts
Your parts arrived with a critical dimension out of spec, even though the supplier claims they were inspected. This usually happens because the dimension was
Your CNC parts passed dimensional inspection, but surface roughness failed. This usually happens after machining is already complete, leaving you with finished parts that can’t
Your coating finish failed — peeling, discoloration, blocked threads, or post-coat dimensions out of tolerance. When this happens, suppliers often blame “finish risk” or material
Your supplier reviewed your tolerances and the quote suddenly doubled. No design change—just a new price tied to “tight tolerances.” When this happens, the problem
When your CNC supplier stops answering tolerance or manufacturability questions, it’s rarely a simple communication delay. Silence usually signals capability gaps, internal backlog, or a
When gears chip within days, it’s almost never normal wear — it’s a supplier capability failure. Most shops blame material or heat treatment, but fast
Parts that passed machining inspection suddenly won’t assemble after anodizing — now your deadline is in danger and the supplier is blaming the coating. If
Heat treatment distortion can turn an in-tolerance CNC part into scrap overnight — holes shrink or drift, faces warp, flatness disappears, and suddenly your supplier
The complete guide to custom manufacturing
Everything about custom manufacturing.
Collection of materials properties
Helpful tips and Advice
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