Part cost estimation???
Part cost estimation???
(OP)
Hi all,
I have a plastic part for which I need to estimate approximate cost/part. I have a choice of 3-4 materials (PC,ABS,PC+ABS blend,Glass filled PP).
Could anyone point me to a source where I can get some means of estimating how much the part would cost for each of these materials?
Thanks,
Jaya
I have a plastic part for which I need to estimate approximate cost/part. I have a choice of 3-4 materials (PC,ABS,PC+ABS blend,Glass filled PP).
Could anyone point me to a source where I can get some means of estimating how much the part would cost for each of these materials?
Thanks,
Jaya






RE: Part cost estimation???
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RE: Part cost estimation???
Right now we don't have any approved vendors and this is a New product in development. I was thinking of posting the part into Quickparts.com or other Rapid molding sources but I would need to get permissions from dept. heads to do that..hence I was wondering if there was some kind of hand calculation just to estimate the what kind of numbers we can expect.
Thanks!
Jaya
RE: Part cost estimation???
I missed it.. should have been addressed to MadMango!
Monday blues :)
Jaya
RE: Part cost estimation???
Using a service like QuickParts won't give you a production part price, as they are only capable of low volume prototype production.
"I think there is a world market for maybe five computers."
Thomas Watson, chairman of IBM, 1943.
Have you read FAQ731-376 to make the best use of Eng-Tips Forums?
RE: Part cost estimation???
It is a lot more complicated than just material costs.
This should be done before the design is finalised as the material choice could effect the design.
For instance, say you are considering a part in nylon or PP.
PP is 25% the cost of nylon on a volume basis, but is not as strong, so some dimensions might need to be increased to get enough strength with the PP. This will change the volume of the part in PP vs nylon, and lose some if not all of the weight advantage of the PP.
PP moulds slower than nylon, this will also influence the cost, and in extreme circumstances, I have seen it more than completely negate the material cost advantage.
PP is more prone to warpage, but less prone to flash. PP will not flow as far in a mould as nylon. These characteristics may or may not impact on both design and cost, depending on the part. You need someone with real experience to assess the design and work out a quote.
Regards
pat pprimmer@acay.com.au
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