Thanks to all who responded, even those trying to sell me SLS products
(I have 2 500's so there's a slim chance that I am in the market for
that). All information is valuable. I received just what my customer
wanted -- RP user success stories.
The following statements are regarding using SL for testing fans:
* Airtex Products (after-market automotive water and fuel pumps)
held close to 5,000 RPM under pressure of 180 litres per minute of water
when subjected to temperatures of up to 118°C. This was using the 5210
resin from the SLA 250.
* GM-Delphi, in either '93 or '94, built and tested fans for
automotive air-conditioning units. We were able to justify the purchase
of an SLA-500 with the cost savings.
* Emerson made similar parts a couple years back using SL5170.
The blade thickness was about 1.5-2.0mm. I don't recall the rpm they
ran, but remember they did do full range airflow testing with them.
* Ford first did this (~1990) and it worked just fine - and that
was with an old acrylic resin.
* It works for other designs too - I had one user who built (in
SL5170) a simple fan (like a multi-blade airplane propeller) about 50mm
diameter and ran it successfully at 16,000 (yes, sixteen thousand) rpm!
--- Regards, Dan Davis PROTON Rapid Prototyping & Manufacturing Center Hicom Industrial Estate Batu Tiga, PO Box 7100 Shah Alam, 40918 Selangor MALAYSIA +60 3 515-2380 phone/fax
For more information about the rp-ml, see http://ltk.hut.fi/rp-ml/
This archive was generated by hypermail 2.1.2 : Tue Jun 05 2001 - 22:50:51 EEST