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Author Topic: Feasibility of 3D printing Erie Stillwell coaches  (Read 26016 times)

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Chris333

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Re: Feasibility of 3D printing Erie Stillwell coaches
« Reply #90 on: February 24, 2016, 03:44:36 PM »
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I especially like drilling hole in FXD because I can see the drill bit the whole time  :o
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chicken45

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Re: Feasibility of 3D printing Erie Stillwell coaches
« Reply #91 on: February 24, 2016, 05:32:21 PM »
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So, what causes bowing?
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Josh Surkosky

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Ed Kapucinski
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Alternate version:
Ed Kapucinski
Every night, he plants a new tree.
He asks excitedly "Did you say Ménage à Trois?"
No, I said "Ed's Law."

Lemosteam

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Re: Feasibility of 3D printing Erie Stillwell coaches
« Reply #92 on: February 24, 2016, 07:28:43 PM »
+1
There's this thing called a Lane, made of wood, with pins at one end.  then you pick up a 16 pounder and roll it at the pins... :trollface:

I have a theory, but its a bit difficult to write, but i'll give it a shot.  25 years ago, I was trained on and SLA 500 machine, when the fluids were still caustic.  What I learned is that even though the fluid is solidified with each pass of the laser, fusing it to the previous layer, there are pockets of uncured resin.  this uncured resin at the time could leak out.  this was before wax supports were used, the laser printed a honeycomb of supports through and under the part,  the supports had to be designed AFTER the model was loaded into the machines "space".   I suspect that the reason that the parts are so porous is because the voids are now filled with wax, instead of resin that gets removed by the bestine.  I would also surmise that the voids structures and shapes are highly unpredictable due to environmental variations such as viscosity, laser wattage fluctuation, etc. As a result, once the wax is removed and the voids are now free to continue to harden, stresses within the "micro"  regions of the part begin to play on the macro regions of the part causing twist and bow, etc.  This random structure likely explains why the same design of macro structure of your flats bowed in unique directions due to the randomness of the miocro structure.

Secondarily, back in the day, the parts had to be placed in a UV incubator for 24 hours before we could even TOUCH the parts. (we had to wear Hazmat suits).  This extra attention to fully solidifying the part, still in its supported state, probably produced more stabel parts, and I also suspect that there is a bit of post cleaning hardening that occurs in the FUD or FXD contributing to the stresses.

Of course all of this is conjecture on my part, but I think it is a logical explanation to the phenomena.
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chicken45

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Re: Feasibility of 3D printing Erie Stillwell coaches
« Reply #93 on: February 24, 2016, 08:05:47 PM »
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Quote from: Lemosteam on February 24, 2016, 07:28:43 PM
There's this thing called a Lane, made of wood, with pins at one end.  then you pick up a 16 pounder and roll it at the pins... :trollface:

Not always...some bowLing alleys have synthetic lanes.
I roll a 15lb World Beater. It's served me well, I just suck.
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Josh Surkosky

Here's a Clerihew about Ed. K.

Ed Kapucinski
Every night, he plants a new tree.
But mention his law
and you've pulled your last straw!

Alternate version:
Ed Kapucinski
Every night, he plants a new tree.
He asks excitedly "Did you say Ménage à Trois?"
No, I said "Ed's Law."

Lemosteam

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Re: Feasibility of 3D printing Erie Stillwell coaches
« Reply #94 on: February 24, 2016, 08:10:15 PM »
+2
Quote from: chicken45 on February 24, 2016, 08:05:47 PM
Not always...some bowLing alleys have synthetic lanes.
I roll a 15lb World Beater. It's served me well, I just suck.
x

TWSS.
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chicken45

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Re: Feasibility of 3D printing Erie Stillwell coaches
« Reply #95 on: February 24, 2016, 08:12:39 PM »
+1
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Josh Surkosky

Here's a Clerihew about Ed. K.

Ed Kapucinski
Every night, he plants a new tree.
But mention his law
and you've pulled your last straw!

Alternate version:
Ed Kapucinski
Every night, he plants a new tree.
He asks excitedly "Did you say Ménage à Trois?"
No, I said "Ed's Law."

Lemosteam

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Re: Feasibility of 3D printing Erie Stillwell coaches
« Reply #96 on: March 16, 2016, 08:52:58 PM »
+4
OK all and @Upstate Gator , @Scott Lupia (his hands!) and I are ROLLING, pun intended- teasers for now pricing, etc. to be determined later:

The car will negotiate a 9.5" radius, and take FVM wheelsets. 











The car will negotiate a 9.5" radius, and take FVM wheelsets. 

HO model for compariosn:

« Last Edit: March 16, 2016, 09:17:41 PM by Lemosteam »
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Chris333

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Re: Feasibility of 3D printing Erie Stillwell coaches
« Reply #97 on: March 16, 2016, 09:00:49 PM »
0
Giggity  :lol:
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C855B

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Re: Feasibility of 3D printing Erie Stillwell coaches
« Reply #98 on: March 16, 2016, 09:53:02 PM »
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Impressive.
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...mike

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chicken45

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Re: Feasibility of 3D printing Erie Stillwell coaches
« Reply #99 on: March 16, 2016, 10:42:40 PM »
0
That's really nice. I like the reclined seats, too!
Wow!
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Josh Surkosky

Here's a Clerihew about Ed. K.

Ed Kapucinski
Every night, he plants a new tree.
But mention his law
and you've pulled your last straw!

Alternate version:
Ed Kapucinski
Every night, he plants a new tree.
He asks excitedly "Did you say Ménage à Trois?"
No, I said "Ed's Law."

Upstate Gator

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Re: Feasibility of 3D printing Erie Stillwell coaches
« Reply #100 on: March 16, 2016, 10:58:15 PM »
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@Lemosteam Awesome. How are the etchings coming along?
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Scott Lupia

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Re: Feasibility of 3D printing Erie Stillwell coaches
« Reply #101 on: March 16, 2016, 11:50:19 PM »
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The etching artwork is done. I was waiting to have the RP cores in hand before I sent them out so I could confirm dimensions. Figure on having etchings in hand in 3 weeks. If they are on the money I order more and there you go.

Scott Lupia
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"All I wanted was a Pepsi"

Upstate Gator

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Re: Feasibility of 3D printing Erie Stillwell coaches
« Reply #102 on: March 17, 2016, 12:50:53 AM »
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Fantastic. The core looks a lot like the modernized cars.
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Chris333

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Re: Feasibility of 3D printing Erie Stillwell coaches
« Reply #103 on: March 17, 2016, 03:58:16 AM »
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I might need a Broadway Limited Erie PA for these instead of my 3 old Life Like units. April 1949 is only 4 months out of my era  :P
http://www.railpictures.net/viewphoto.php?id=183310&nseq=101
http://www.railpictures.net/photo/284437/

As I said earlier they ran from Cleveland to Pittsburgh, but I just read that train is why they bought their first PA1's.
« Last Edit: March 17, 2016, 05:12:06 AM by Chris333 »
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Lemosteam

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Re: Feasibility of 3D printing Erie Stillwell coaches
« Reply #104 on: March 17, 2016, 06:09:48 AM »
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Quote from: Chris333 on March 17, 2016, 03:58:16 AM
I might need a Broadway Limited Erie PA for these instead of my 3 old Life Like units. April 1949 is only 4 months out of my era  :P
http://www.railpictures.net/viewphoto.php?id=183310&nseq=101
http://www.railpictures.net/photo/284437/

As I said earlier they ran from Cleveland to Pittsburgh, but I just read that train is why they bought their first PA1's.

MBK has 5% off BLI products right now, just sayin'  :D
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