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Posted 13 January 2012 - 09:22 AM
I'm a newbie designer in China and am producing some of my first plastic enclosures. As I've learnt from my previous enclosure project, in China, you need to be concise and leave no spaces undiscussed. I want my enclosure to have a texture although I don't know how to express my vision/specs to the manufacturer in words. I'm going for a normal noise-like texture which serves to cover up any tooling lines left around the ports, and it should not be glossy as i wouldn't want it to distract whoever's using it. The texture has to be ample to prevent greasy finger prints.
houses a display and electronics
QTY: 1000PCEs to begin
Plastic: ABS (no idea, seemed like a safe choice)
Method: Injection molding
market: medium sized companies. Medical, technical, industrial, home
So, given all that. How do I express my needs to the manufacturer? Something like stipple texture of a depth of 0.127mm (0.005")?
What's commonly used for enclosures? What about the texture depth of the white and black parts on an Xbox controller?
Posted 13 January 2012 - 04:41 PM
There are also a series of VDI textures which are actually done by modifying the EDM which is used to cut your tool, but those textures have some unique complexity which may or may not make them appropriate for use. (If a modification needs to be done after your initial tool is cut, the texture will not match properly).
I would speak to your tooling vendor, ask them to find out who their preferred texture vendor is, and see if they can provide you with sample plaques (these are standard, but sometimes hard to get a hold of). But if you are in China, it may be as easy as taking a trip to the factory that will do the tooling.
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Posted 16 January 2012 - 10:27 AM
I couldn't find a proper explanation for VDI, what does it stand for?
And for those of you who don't know.
EDM = Electrical discharge machining (aka: spark machining, spark eroding, burning, die sinking or wire erosion) a manufacturing process for applying a desired shape or texture to hard metals. - Wikipedia
Posted 17 January 2012 - 03:56 AM
VDI (and I had to google this because I did not know) stands for Verein Deutscher Ingenieure which is just German for German Association of Engineers, who apparently invented the standard. But it is a different process compared to Moldtech or similar acid etched texures.
MT11005-MT11010 are probably in the range of what you want but they are actually created using different processes. You can try to reach out to mold tech directly, if they have a factory near you it's worth a trip to understand better and try to pick a proper texture plaque.
Posted 17 January 2012 - 10:36 AM
A trip to Mold-Tech would definetely be great, I'll see if I can make it happen. Is there an online library of textures that you would know of for the Mold-Tech textures? I found one so far with a few pics as seen below from bbs.icax.org[img]http://www.google.com.hk/url?source=imglanding&ct=img&q=http://att.icax.org/forum/2009/03/02/iCAx.cn_c29fdf240509f9f0940761733cPM5S4z.jpg&sa=X&ei=WEEVT9DbKofBiQeKkPFD&ved=0CAsQ8wc&usg=AFQjCNFqqN07Qgc2HUK59tX9VwqPfa8h_A[/img]
Posted 17 January 2012 - 04:36 PM
Without seeing them in person it'll be very hard to really understand the differences between the texture ranges and how big the texture actually is. I think the 11005-11010 range is where you want to be, but like I mentioned they are actually created with different processes (media blasting vs acid etching) so the end result and longterm tool durability is different.
Posted 18 January 2012 - 02:39 AM
Posted 18 January 2012 - 08:34 PM
Generally the tool is cleaned up after it is cut and prior to texturing.
Also tagged with one or more of these keywords: enclosure, plastic, texture
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