CNW J class Mikado

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FLtenwheeler
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Re: CNW J class Mikado

Post by FLtenwheeler » Mon Jul 04, 2016 12:48 pm

JohnHudak wrote:
FLtenwheeler wrote:Hi Harold

I use silicon bronze ingots for locomotive parts. I have been using Shapeways "White Strong & Flexible Plastic" for the wax. (LOL) I am having very good luck.

Tim

The white plastic burns out just like wax..? Doesn't shapways print in wax also?
John

Hi John

Yes, the plastic burns out clean, but it does stink. Luckily the work shop is not attached to the house. The Shapeways wax is for small objects and is very costly.

Tim
He who dies with the most unfinished projects: Should of put more time into their hobby.

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FLtenwheeler
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Re: CNW J class Mikado

Post by FLtenwheeler » Mon Jul 04, 2016 1:09 pm

I was able to get some work done on the drivers. The axle hole is bored and reamed to size. Now to cut the keyways.

Tim
Attachments
Drivers.jpg
He who dies with the most unfinished projects: Should of put more time into their hobby.

kvom
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Re: CNW J class Mikado

Post by kvom » Fri Jul 08, 2016 6:53 am

JohnHudak wrote:
FLtenwheeler wrote:Hi Harold

I use silicon bronze ingots for locomotive parts. I have been using Shapeways "White Strong & Flexible Plastic" for the wax. (LOL) I am having very good luck.

Tim

The white plastic burns out just like wax..? Doesn't shapways print in wax also?
John
The wax is much more expensive than the plastic. Plus, you can make only small parts in wax.

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Fender
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Re: CNW J class Mikado

Post by Fender » Fri Jul 08, 2016 8:34 am

Very interesting, Tim. What temperature do you use to burn out the "lost plastic", and for how long?
Dan Watson

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FLtenwheeler
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Re: CNW J class Mikado

Post by FLtenwheeler » Fri Jul 08, 2016 10:04 am

Hi Dan

I use Ultra Vest Jewelry Investment With Fiberglass and use there standard burnout instructions. So it is 1350F.

Tim
He who dies with the most unfinished projects: Should of put more time into their hobby.

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FLtenwheeler
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Re: CNW J class Mikado

Post by FLtenwheeler » Wed Sep 21, 2016 7:34 pm

I have the driver centers machined and am working on machining the tires. I am going with an 0.008" shrink fit. I am trying to hold a plus or minus 0.0005" on the tire ID.

Tim
Attachments
Pie Jaws Machine Inside of Tire.JPG
He who dies with the most unfinished projects: Should of put more time into their hobby.

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FLtenwheeler
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Re: CNW J class Mikado

Post by FLtenwheeler » Sat May 20, 2017 1:34 pm

Hi All

I just received the Frame Crosstie & Bumper Beam Bracket from the foundry. It turned out great. A printed sand mold was use to produce the casting. I am very happy with the results. How to set it up and machine it. Then I can assemble the side frames.

Tim
Attachments
P5200977.JPG
Frame, Crosstie & Bumper Beam Bracket
P5200979.JPG
Frame, Crosstie & Bumper Beam Bracket
He who dies with the most unfinished projects: Should of put more time into their hobby.

Jerry_H
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Re: CNW J class Mikado

Post by Jerry_H » Tue May 23, 2017 6:14 pm

It's a work of art, Tim.

Jerry
www.chaski.com

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FLtenwheeler
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Re: CNW J class Mikado

Post by FLtenwheeler » Tue May 23, 2017 7:33 pm

Thanks
He who dies with the most unfinished projects: Should of put more time into their hobby.

Kimball McGinley
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Re: CNW J class Mikado

Post by Kimball McGinley » Thu May 25, 2017 2:16 pm

Is that George Washington your change back from a Ben Franklin?

Glenn Brooks
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Re: CNW J class Mikado

Post by Glenn Brooks » Thu May 25, 2017 6:39 pm

FLtenwheeler wrote:Hi All

I just received the Frame Crosstie & Bumper Beam Bracket from the foundry. It turned out great. A printed sand mold was use to produce the casting. I am very happy with the results. How to set it up and machine it. Then I can assemble the side frames.

Tim
Hi Tim,

This is very interesting! How complicated a process is it to have the foundry create the printed sand mold and make the part?? Is it expensive to create small batches of one off parts, such as 3" scale frame pieces, couplers, etc for a 12" ga loco???

Thanks much
Glenn
Moderator - Grand Scale Forum

Motive power : 1902 A.S.Campbell 4-4-0 American - 12 5/8" gauge, 1955 Ottaway 4-4-0 American 12" gauge

Ahaha, Retirement: the good life - drifting endlessly on a Sea of projects....

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FLtenwheeler
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Re: CNW J class Mikado

Post by FLtenwheeler » Thu May 25, 2017 7:23 pm

Kimball McGinley wrote:Is that George Washington your change back from a Ben Franklin?
I wish. It was a lot to get this part done. I need to learn how to gate and do the mold setup myself.

Tim
He who dies with the most unfinished projects: Should of put more time into their hobby.

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