Dennis Plunkett wrote:
>
> At 06:03 20/09/99 +0200, you wrote:
> >Jeff King wrote:
> >
> >> I stopped by one shop, who wants to mold a enclosure for me out of
> >> urethane (not injection molding, but a "poured process"). $850 mold
> >> design, $500 tooling and $85 for each box (qty 100).... not
> >> having any experience with this, it sounded a bit high. This plastic
> >> is common used in industrial environments and very strong.
> >
> >Those prices are crazy.
> >
> >We can get an injection tool made for around $4000 with the
> >boxes around $1 each.
>
> At $4000 how long does the mould last 5000 boxes? How many do you have to
> have made each time before no setup cost?  Surely not the expected 150000...

The tools are hardened after the first 500 (no changes after that).
It will last 150k (machine steel).

Material is polycarb, polyprop, or nylon. ABS is cheaper.

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