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  Not available at Home Depot…..

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Author Topic:   Not available at Home Depot…..
Steven Kaplan
Member

Posts: 140
From: New Jersey
Registered: Jul 2001

posted 07-14-2006 10:28 AM     Click Here to See the Profile for Steven Kaplan   Click Here to Email Steven Kaplan     Edit/Delete Message   Reply w/Quote
Much has been written about the loss of one of the “putty knives” being used by STS-121 astronauts during their EVA for evaluating repair techniques for the shuttle thermal protection system, and their estimated cost of $ 2000.00 each. Out of curiosity- has anyone seen a good photo of these tools?

KSCartist
Member

Posts: 2896
From: Titusville, FL USA
Registered: Feb 2005

posted 07-14-2006 02:57 PM     Click Here to See the Profile for KSCartist   Click Here to Email KSCartist     Edit/Delete Message   Reply w/Quote
Hi Steve-

You can bet that if they were Home Depot would be rushing to produce a commercial. Although one of the spacewalkers did say he'd have to go to Home Depot after they return to Houston to replace the lost one.

Tim

Robert Pearlman
Editor

Posts: 42988
From: Houston, TX
Registered: Nov 1999

posted 07-14-2006 08:29 PM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by Steven Kaplan:
Out of curiosity- has anyone seen a good photo of these tools?
Here's a photo of a training mock-up. The major difference between the spatula pictured and the one lost in space is its color. The real CRM scrapers are metal.

kyra
Member

Posts: 583
From: Louisville CO US
Registered: Aug 2003

posted 07-15-2006 07:30 AM     Click Here to See the Profile for kyra   Click Here to Email kyra     Edit/Delete Message   Reply w/Quote
These tools look to be custom machined. That would explain their cost. Even my machine shop friend does not like to do any work for less than $100 an hour and that's the friends rate with free setup!

I can see they built a plastic prototype from Robert's photo !

In hindsight, thinking about the $2000 per tool, if the design and engineering Autocad work was factored in, setup, materials (probably a special aluminum alloy the least expensive part of the process), setup, machining, and QC labwork, I would say NASA got a bargain with the lowest bidder.

As a side question does NASA/JSC have an in-house machine shop ? They could reduce costs by having in house GS-8 thru GS-11's on elevated scales running around building quality things.

Now having said they got a bargain, yes and no - did they make every attempt to find a COTS program substitute ? This in itself costs money, which is why once they pick something it seems to stick around for years ! They may have tried with Home depot putty knives and expensive gourmet all metal spatulas and found the metal would crack, snap or burr when they went to modify it. This failed experiment has already cost a few thousand. Before we go further should we outsource this to the lowest bidder ? Someone apparently thought this was wise.

You see folks, even when it seems simple, running a space program can be tough, with no easy choices. The next time you hear someone try to point out a $2000 "spatula" as evidence that NASA wastes money, give them these thoughts as an earfull

[This message has been edited by kyra (edited July 15, 2006).]

[This message has been edited by kyra (edited July 15, 2006).]

GACspaceguy
Member

Posts: 2475
From: Guyton, GA
Registered: Jan 2006

posted 07-15-2006 09:41 AM     Click Here to See the Profile for GACspaceguy   Click Here to Email GACspaceguy     Edit/Delete Message   Reply w/Quote
It has been my experience, in the Aerospace field, that the cost of manufacturing a small production run of a specialty item is in the research and development as well as the documentation paperwork. The material and the actual manufacturing is only part of the cost. It is the intellectual development when amortized over a small production run drives the cost per unit up. Even if NASA were to by an off the shelf unit it would have to do the research to determine if it could be used in the space environment as well as any grip, safety, usability issues it would have for the task. All of that expenditure would then have to be added to the purchase price of the unit to determine its final cost for NASA. If NASA then only purchased two of these units the cost could be still in the $2000 range. If they bought a thousand then the price per unit would be what the general public would see as a reasonable price per unit(except now NASA would have to pay for storing and tracking hundreds of units they will never use).

spaceuk
Member

Posts: 2113
From: Staffs, UK
Registered: Aug 2002

posted 07-16-2006 10:32 AM     Click Here to See the Profile for spaceuk     Edit/Delete Message   Reply w/Quote
I wonder what the Russians or even Chinese would have used

Phill

mikepf
Member

Posts: 441
From: San Jose, California, USA
Registered: Mar 2002

posted 07-19-2006 05:55 PM     Click Here to See the Profile for mikepf   Click Here to Email mikepf     Edit/Delete Message   Reply w/Quote
Presenting Piers Sellers with a winged gold plated kitchen spatula as the Flying Spatula Award would be an amusing gotcha. I wonder how many gag spatulas he'll end up getting.
Mikie

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