restoring a DC9 restroom... at home

[[email protected]]

I want use my home workshop to rebuild an old, junked restroom from a
USAF DC9.

The milspec drawings show a slot for "used razor blades".

How often am I supposed to clean out the used razor blades to maintain
airworthiness specs?

[Robert Bonomi]

In article . com>,
> wrote:
>I want use my home workshop to rebuild an old, junked restroom from a
>USAF DC9.
>
>The milspec drawings show a slot for "used razor blades".
>
>How often am I supposed to clean out the used razor blades to maintain
>airworthiness specs?
>

single-edged, or double-edged?

[John Kunkel]

> wrote in message
oups.com...
>I want use my home workshop to rebuild an old, junked restroom from a
> USAF DC9.
>
> The milspec drawings show a slot for "used razor blades".
>
> How often am I supposed to clean out the used razor blades to maintain
> airworthiness specs?

Not to worry, Homeland Security won't allow razor blades in an aircraft
****ter, ground bound or not. <BG>

[Vaughn]

"Robert Bonomi" > wrote in message
...
> In article . com>,
> > wrote:
>>I want use my home workshop to rebuild an old, junked restroom from a
>>USAF DC9.
>>
>>The milspec drawings show a slot for "used razor blades".

The medicine cabinet in my childhood home had such a slot. Back then, a
razor blade was only good for one or two shaves. My father must have dropped
thousands of blades down that slot over the decades. Always wondered where they
went.

Vaughn

[RST Engineering]

A 15" medicine cabinet was designed to fit between standard 2x4 studs on 16"
centers. The blades dropped into the inter-wall space created by those
2x4s. A quick calculation for a medicine cabinet at 5' high, 15" wide, 3.5"
deep shows a space of some 3150 cubic inches. Assuming the blades were
about 1" x 2" x 0.005, this gives a blade volume of.01 cubic inches. You
could drop 315,000 blades into the slot before the space filled up. If you
changed blades every other day, you had a little over 1700 years of
capacity.

Jim



"Vaughn" > wrote in message
...

>
> The medicine cabinet in my childhood home had such a slot. Back then,
> a razor blade was only good for one or two shaves. My father must have
> dropped thousands of blades down that slot over the decades. Always
> wondered where they went.
>
> Vaughn
>
>

[Ebby]

I can cross that one off my list of things I wonder about.

[Vaughn]

"RST Engineering" > wrote in message
...
>A 15" medicine cabinet was designed to fit between standard 2x4 studs on 16"
>centers. The blades dropped into the inter-wall space created by those 2x4s.
>A quick calculation for a medicine cabinet at 5' high, 15" wide, 3.5" deep
>shows a space of some 3150 cubic inches. Assuming the blades were about 1" x
>2" x 0.005, this gives a blade volume of.01 cubic inches. You could drop
>315,000 blades into the slot before the space filled up. If you changed blades
>every other day, you had a little over 1700 years of capacity.

Ah yes Jim, but you forgot to take the firestops into consideration. They
were usually staggered at about bellybutton height, so that might cut the
capacity to something well under 1000 years. Those firestops are every old-work
electrician's nemesis. But running a wire is nothing, my old man (when he
wasn't shaving) used to fish heating ducts up through existing walls without
opening the plaster.

Actually, that was a heluva good answer Jim.

Vaughn

[Edgar]

"RST Engineering" > wrote in message
...
> A 15" medicine cabinet was designed to fit between standard 2x4 studs on
16"
> centers. The blades dropped into the inter-wall space created by those
> 2x4s. A quick calculation for a medicine cabinet at 5' high, 15" wide,
3.5"
> deep shows a space of some 3150 cubic inches. Assuming the blades were
> about 1" x 2" x 0.005, this gives a blade volume of.01 cubic inches. You
> could drop 315,000 blades into the slot before the space filled up. If
you
> changed blades every other day, you had a little over 1700 years of
> capacity.

IF they fell correctly (flat).

[RST Engineering]

In California we never worried about it. The next earthquake would always
level them out.

{;-)


Jim



"Edgar" > wrote in message
...
>
If
> you
>> changed blades every other day, you had a little over 1700 years of
>> capacity.
>
> IF they fell correctly (flat).
>
>

[Dan]

In one of the buildings I used to work in, all the medicine cabinets had
that slot, and they all opened up in the back into a pipe chase thru which I
had to run wire. Long sleeves and leather gloves all day every day in those
places. I never got cut badly but one fellow got caught just right and
almost bled to death, in a nurses residence, on a hospital campus.


>> The medicine cabinet in my childhood home had such a slot. Back
>> then, a razor blade was only good for one or two shaves. My father must
>> have dropped thousands of blades down that slot over the decades. Always
>> wondered where they went.
>>
>> Vaughn
>>
>>
>
>

[Edgar]

"RST Engineering" > wrote in message
...
> In California we never worried about it. The next earthquake would always
> level them out.

:-Q LOL

You're right- a little 'shake and bake' will keep them leveled out.

Ha, Ha,

[Matt Whiting]

RST Engineering wrote:
> A 15" medicine cabinet was designed to fit between standard 2x4 studs on 16"
> centers. The blades dropped into the inter-wall space created by those
> 2x4s. A quick calculation for a medicine cabinet at 5' high, 15" wide, 3.5"
> deep shows a space of some 3150 cubic inches. Assuming the blades were
> about 1" x 2" x 0.005, this gives a blade volume of.01 cubic inches. You
> could drop 315,000 blades into the slot before the space filled up. If you
> changed blades every other day, you had a little over 1700 years of
> capacity.

And if all blades fell into a perfectly dense pack configuration.
However, even in the real world it would still take a long time to fill
the cavity. However, I feel sorry for the guy that demolishes the place
and has to clean up that mess of blades ... hopefully, he has a strong
magnet handy!


Matt

[Morgans]

> wrote in message
oups.com...
> I want use my home workshop to rebuild an old, junked restroom from a
> USAF DC9.
>
> The milspec drawings show a slot for "used razor blades".
>
> How often am I supposed to clean out the used razor blades to maintain
> airworthiness specs?

Not until a total airframe overhaul. As Jim said, there is plenty of room
for LOTS of blades.

Don't forget to update your weight and ballance, on every flight, for the
added razor blade weights! <g>
--
Jim in NC

[UltraJohn]

RST Engineering wrote:

> A 15" medicine cabinet was designed to fit between standard 2x4 studs on
> 16"
> centers. The blades dropped into the inter-wall space created by those
> 2x4s. A quick calculation for a medicine cabinet at 5' high, 15" wide,
> 3.5"
> deep shows a space of some 3150 cubic inches. Assuming the blades were
> about 1" x 2" x 0.005, this gives a blade volume of.01 cubic inches. You
> could drop 315,000 blades into the slot before the space filled up. If
> you changed blades every other day, you had a little over 1700 years of
> capacity.
>
> Jim
>


Alas only if they fell neatly into place!
John

[The Raven]

"RST Engineering" > wrote in message
...
>A 15" medicine cabinet was designed to fit between standard 2x4 studs on
>16" centers. The blades dropped into the inter-wall space created by those
>2x4s. A quick calculation for a medicine cabinet at 5' high, 15" wide,
>3.5" deep shows a space of some 3150 cubic inches. Assuming the blades
>were about 1" x 2" x 0.005, this gives a blade volume of.01 cubic inches.
>You could drop 315,000 blades into the slot before the space filled up. If
>you changed blades every other day, you had a little over 1700 years of
>capacity.

Good explanation but you forgot to factor in corrosion of those blades. By
the time you reach 1700 years, the first 1200 years of blades would have
corroded to almost nothing. This would give at least another 500-600 worth
of storage. You can calculate out the rest....


--
The Raven
http://www.80scartoons.co.uk/batfinkquote.mp3
** Now I will bring chaos to the world!

[Chuck Harris]

The Raven wrote:
> "RST Engineering" > wrote in message
> ...
>
>>A 15" medicine cabinet was designed to fit between standard 2x4 studs on
>>16" centers. The blades dropped into the inter-wall space created by those
>>2x4s. A quick calculation for a medicine cabinet at 5' high, 15" wide,
>>3.5" deep shows a space of some 3150 cubic inches. Assuming the blades
>>were about 1" x 2" x 0.005, this gives a blade volume of.01 cubic inches.
>>You could drop 315,000 blades into the slot before the space filled up. If
>>you changed blades every other day, you had a little over 1700 years of
>>capacity.
>
>
> Good explanation but you forgot to factor in corrosion of those blades. By
> the time you reach 1700 years, the first 1200 years of blades would have
> corroded to almost nothing. This would give at least another 500-600 worth
> of storage. You can calculate out the rest....

Back in the days of carbon steel razor blades, corrosion would reduce the
blades to dust (dust that takes up more room than the uncorroded blade
itself, BTW).

But today's double edged safety razor blade is made from a form of stainless steel, and
doesn't rust.

-Chuck

[Montblack]

("Chuck Harris" wrote)
> Back in the days of carbon steel razor blades, corrosion would reduce the
> blades to dust (dust that takes up more room than the uncorroded blade
> itself, BTW).
>
> But today's double edged safety razor blade is made from a form of
> stainless steel, and
> doesn't rust.


Have you factored in wall critters making off with some of the blades?
Little mouse blacksmiths working into the the night pounding out swords,
armor, spears...

Ben (1972) meets Braveheart (1995).
"Where 'WILLARD' ended... Ben begins. And this time, he's not alone!"


Montblack
Hope Puss 'n Boots is up to the challenge.

[Matt Whiting]

The Raven wrote:

> "RST Engineering" > wrote in message
> ...
>
>>A 15" medicine cabinet was designed to fit between standard 2x4 studs on
>>16" centers. The blades dropped into the inter-wall space created by those
>>2x4s. A quick calculation for a medicine cabinet at 5' high, 15" wide,
>>3.5" deep shows a space of some 3150 cubic inches. Assuming the blades
>>were about 1" x 2" x 0.005, this gives a blade volume of.01 cubic inches.
>>You could drop 315,000 blades into the slot before the space filled up. If
>>you changed blades every other day, you had a little over 1700 years of
>>capacity.
>
>
> Good explanation but you forgot to factor in corrosion of those blades. By
> the time you reach 1700 years, the first 1200 years of blades would have
> corroded to almost nothing. This would give at least another 500-600 worth
> of storage. You can calculate out the rest....
>
>

Except that iron oxide takes up even more space than the iron ....


Matt

[Derek Lyons]

"The Raven" > wrote:

>Good explanation but you forgot to factor in corrosion of those blades. By
>the time you reach 1700 years, the first 1200 years of blades would have
>corroded to almost nothing. This would give at least another 500-600 worth
>of storage.

Umm.. I don't think so. Inside the wall (as opposed to exposed to
the elements) there is nothing carrying the corroded material away.
It doesn't simply evaporate.

D.
--
Touch-twice life. Eat. Drink. Laugh.

-Resolved: To be more temperate in my postings.
Oct 5th, 2004 JDL

[Frank van der Hulst]

Matt Whiting wrote:

>> Good explanation but you forgot to factor in corrosion of those
>> blades. By the time you reach 1700 years, the first 1200 years of
>> blades would have corroded to almost nothing. This would give at least
>> another 500-600 worth of storage. You can calculate out the rest....
>
> Except that iron oxide takes up even more space than the iron ....

OMG... there may only be 1000 years of capacity. Time for an emergency AD!

[Flyingmonk]

>>A 15" medicine cabinet was designed to fit between standard 2x4 studs on 16"
centers. The blades dropped into the inter-wall space created by those

2x4s. A quick calculation for a medicine cabinet at 5' high, 15" wide,
3.5"
deep shows a space of some 3150 cubic inches. Assuming the blades
were
about 1" x 2" x 0.005, this gives a blade volume of.01 cubic inches.
You
could drop 315,000 blades into the slot before the space filled up. If
you
changed blades every other day, you had a little over 1700 years of
capacity. >>

That's assuming that they all fall flat and ended up end to end down at
the bottom of the space right?

[CJ Adams]

"Flyingmonk" > wrote in message

> A quick calculation for a medicine cabinet at 5' high, 15" wide, 3.5"
> deep shows a space of some 3150 cubic inches. Assuming the blades
> were about 1" x 2" x 0.005, this gives a blade volume of.01 cubic inches.
> You could drop 315,000 blades into the slot before the space filled up.
> If
> you changed blades every other day, you had a little over 1700 years of
> capacity.


It's also just shy of 900 lbs. Which would give out first? Cubic capacity
or the structure of the wall?
Maybe its just as well that nobody's fixed for blades any more!

Cheers
CJ Adams
Arte et Marte

[Edgar]

"Flyingmonk" > wrote in message
ups.com...
> >>A 15" medicine cabinet was designed to fit between standard 2x4 studs on
16"
> centers. The blades dropped into the inter-wall space created by those
>
> 2x4s. A quick calculation for a medicine cabinet at 5' high, 15" wide,
> 3.5"
> deep shows a space of some 3150 cubic inches. Assuming the blades
> were
> about 1" x 2" x 0.005, this gives a blade volume of.01 cubic inches.
> You
> could drop 315,000 blades into the slot before the space filled up. If
> you
> changed blades every other day, you had a little over 1700 years of
> capacity. >>
>
> That's assuming that they all fall flat and ended up end to end down at
> the bottom of the space right?

Or left (depending on your viewpoint).
But, the perfect razor alignment is due to the earth shake.

[[email protected]]

> A quick calculation

you're hired. Now, second problem that's giving me nightmares....
How many "Sanitary Napkins" am I required to have in there?

[LCT Paintball]

> you're hired. Now, second problem that's giving me nightmares....
> How many "Sanitary Napkins" am I required to have in there?
>

How many do you use?

[Edgar]

"LCT Paintball" > wrote in message
news:OcdAe.156158$nG6.130994@attbi_s22...
> > you're hired. Now, second problem that's giving me nightmares....
> > How many "Sanitary Napkins" am I required to have in there?
> >
>
> How many do you use?

At least one (for that spot over the door where I keep smashing my head).
:-)

^^