RE: Quick Cast

From: Miller, Michael W (
Date: Mon May 24 1999 - 16:58:51 EEST

You can wipe down the outside but never dunk a qc part in either tpm or alcohol... there's too much exposed surface area inside and it will soften and warp. The only exception to this might be if you plugged all the drain and vent holes first as previously mentioned which will work for small parts but big parts will float and you might break them.

Michael W Miller (
The Boeing Company MS 17-PE B-XT62
Propulsion Experimental Hardware 206-655-3289
Rapid Prototyping 655-4366 Lab 655-4365

> ----------
> From: Jordan Joseph W DLPC[]
> Sent: Saturday, May 22, 1999 4:59 PM
> To: rapid prototyping list
> Subject: Quick Cast
> Hi Everyone,
> We are an in house SLA facuilty for the USN with a new 3500 and 5510 resin. I recently had a request from a customer to make him a Qucik Cast part of a rather large part. He had tried to do a thin wall on the part but his CAD software couldn't handle the complex geometry and crashed. So we decided to give it a try. I ran a small test part with vents and drains, everything looked good, but the clean up was more that I expected since from what I have heard you should not use tpm and water only alcohol to wipe down the part. These parts are not intended for the foundry use only for presentation purposes, therefore all the requirements of a true Quick Cast Part are not nessecary. My question is can I get away with draining then washing these parts in tpm and resining with water, then the PCA with out making the part unusable. Anyone having experience with this any and all feedback would be greatly appreciated.
> Joe Jordan
> SLA Technician
> Coastal Systems Station
> 850-235-5984
> For more information about the rp-ml, see

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