Subject:
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RE: Is this bad design?
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Newsgroups:
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lugnet.general
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Date:
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Fri, 16 Nov 2001 19:34:06 GMT
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Reply-To:
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<bram@*saynotospam*po.cwru.edu>
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Viewed:
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531 times
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Adrian Drake writes:
> I suspect it's due to the way that plastic parts are made.
> They have to have a draft, or an angle on all vertical walls,
> in order for them to be removed from the mold.
Do you still need draft if the mold has ejector pins?
--Bram
Bram Lambrecht
bram@cwru.edu
www.bldesign.org
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Message has 2 Replies:
 | | Re: Is this bad design?
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| Yes, even with pnuematic or hydraulic ejectors you'd still design the mold with some draft. Bram Lambrecht <bram@cwru.edu> wrote in message news:000201c16ed5$a8...1681@bl... (...) (23 years ago, 16-Nov-01, to lugnet.general)
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Message is in Reply To:
| | Re: Is this bad design?
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| I suspect it's due to the way that plastic parts are made. They have to have a draft, or an angle on all vertical walls, in order for them to be removed from the mold. Over small distances, or when reinforced in a 3-d structure, this draft doesn't (...) (23 years ago, 16-Nov-01, to lugnet.general)
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