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...

As of the urethane, this is quite acceptable in price??, but don't expect
the mould to last much more than 300 boxes (In which case a cheep injection
mold may be better (Watch the plasic used here wouldn't want crud PCVA)).
Have you had a look into a blown mold instead?, all be it that the boxes
may not look as good. I do hope that the $85 also includes machine
finishing (Things like the actual finsh and cutouts, holes and slots etc),
if not, then Tjaart is correct, also I an assuming that the enclosure is
quite sizeable, like around 15cm by 25cm by 10cm or so.
Note that the cost you are looking at is $9850, could get a good metal box
made for lots less than this in these numbers.


Dennis



>
>--
>Friendly Regards           /"\
>                           \ /
>Tjaart van der Walt         X ASCII RIBBON CAMPAIGN
>mailto:tjaart@cellpt.co.za / \ AGAINST HTML MAIL
>|--------------------------------------------------|
>|  GSM Technology for Positioning and Telematics   |
>|  Cellpoint Systems SA    http://www.cellpt.com   |
>|    http://www.wasp.co.za/~tjaart/index.html      |
>| WGS84 -26.0124 +28.1129  Voice +27 (0)11 2545100 |
>|--------------------------------------------------|
>
>