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The VMT blog is dedicated to sharing our hard-earned knowledge in prototype manufacturing. We hope these articles will help you optimize your product designs and gain deeper insight into the world of rapid prototyping. Enjoy the read!
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2026 08 25 There are many kinds of CNC machining processes, so it is often necessary to estimate the time of one or more operating procedures. These are related to the processing cost of the parts and the on-time delivery time.
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VMT 2026 08 24 Laser engraving is ideal for fine, permanent logos, serial numbers, and traceability marks; chemical etching creates precise recessed patterns without mechanical cutting; screen printing, also called silk screen printing, is better when your CNC part requires defined colors or multi-color graphics. The best choice depends on material, detail, durability, color, surface finish, quantity, and cost.
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VMT 2026 08 24 CNC engraving physically removes material with a cutting tool and typically produces deeper 0.1–0.3 mm recessed features, with greater depths available when required. Laser engraving is a non-contact process that can produce fine 0.01–0.02 mm marks with machining accuracy up to 0.02 mm on suitable parts. The better choice depends on depth, detail, material, finish, cost, and production volume.
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VMT 2026 08 24 For general CNC text and logo engraving, recessed engraving is usually more economical than raised text. Sans-Serif fonts and 20 pt+ text are practical DFM recommendations, while approximately 0.3 mm is a useful engraving-depth reference. Smaller text or different depths may also be possible depending on stroke width, cutter geometry, material, part geometry, and finishing requirements.
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VMT 2026 08 24 This article will break down the exact reasons behind the high cost of titanium machined parts. More importantly, we will share practical strategies to lower your manufacturing expenses: from optimizing tolerance allocation and part geometry (DFM design tips) to selecting efficient manufacturing processes (near-net shaping + precision machining) and leveraging factory-level tooling and coolant setups. Finally, we will present a case study detailing how we solved surface finish and sealing issues for a client's titanium valve assembly.
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VMT 2026 08 21 In this guide, we’ll compare both processes across stability, precision, tooling, and cost to help you select the ideal manufacturing solution for your project. We’ll also walk you through a case study detailing how our factory helped a client consolidate a complex multi-step component into a single Swiss machining setup, cutting cycle time by 45% and reducing per-part costs.
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VMT 2026 08 20 Tolerance in manufacturing is the acceptable differential range for your team to determine the size based on the form, fit and function of the CNC part. While tight tolerances ensure superior dimensional consistency and product quality (at a higher manufacturing cost), overly loose dimensional tolerances can result in assembly failures. Similarly, loose geometric tolerances (such as concentricity errors) can degrade the image performance of precision optical devices. Understanding how CNC machining tolerances affect cost, choice of manufacturing process, inspection options and materials can help you better determine product designs and CNC machining production plans.
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VMT 2026 08 19 We know that AN hoses and joints are often used in racing cars and AN pipe fittings in the aerospace industry. AN stands for Army-Navy, because the specification is based on the flexible fluid connection standard used during World War II. AN connectors have a variety of different angles to assist wiring and gaps. They are straight, 30, 45, 60, 90, 120 , 150 or even 180 degrees.
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