The first delay sounded reasonable. The second felt unlucky. By the third — you’re realizing something is fundamentally wrong. If a supplier misses their committed
Your drawing looks fine on screen — but quotes come back 4× higher than expected, peppered with “DFM issues,” or outright no-quotes. At that point
Thin-wall parts look harmless in CAD — until suppliers start pushing back. Quotes disappear. Lead times stretch. And even approved parts warp during machining or
Your CNC drawing may look fully compliant, yet suppliers still reject it due to “tolerance stack-up risk.” These rejections usually appear after long quoting delays,
Your CNC supplier quotes 3–5× higher than expected — or refuses to quote entirely. The part isn’t new, the material is common, and tolerances are
Suppliers reject your drawings when the part seems too risky for them to deliver on time and within spec. As deadlines approach, even simple pushback
Parts arrive, inspection fails, production stops — but your supplier insists everything was “within tolerance.” Now the clock is ticking and you must decide who’s
You send a drawing. The quote looks fine. But as manufacturing begins, the supplier emails: “Can we loosen this tolerance?” Suddenly the project feels uncertain.
Heat-treated parts often come back warped or undersized — suddenly your build is stuck. Tolerance fails after heat treatment because residual stresses and phase changes
You received threaded parts showing spiral lines or ripples along the flanks — the supplier calls it “normal,” but your gauges catch resistance. That’s not
The complete guide to custom manufacturing
Everything about custom manufacturing.
Collection of materials properties
Helpful tips and Advice
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