Search found 546 matches

by RONALD
Thu Jun 13, 2019 9:47 am
Forum: Casting & Foundry Work
Topic: Baking Cores
Replies: 3
Views: 93

Re: Baking Cores

I have never baked a core, I use the CO2 (Carbon Dioxide)- Sodium Silicate method for making cores. It's a "Cold Box" method and requires no heat. There is no toxicity/fumes associated with this method. I usually will mull 400 milliliters of Sodium Silicate with 25 pounds of sand. I use AFS 105, but...
by RONALD
Thu Jun 13, 2019 9:16 am
Forum: Welding
Topic: Rough strength equivalent
Replies: 2
Views: 131

Re: Rough strength equivalent

Several years ago, a relative of mine was in maintenance at a paint company when they got rid of shelving that held heavy skids of gallon paint cans. He gave me several dozen of the ~ 10ft long rectangular tubing that held up those loads. They are almost the exact size of a wooden 2x4 and are 1/8th ...
by RONALD
Fri Jun 07, 2019 6:26 pm
Forum: Casting & Foundry Work
Topic: Things they dont tell ya when you start casting. :)
Replies: 26
Views: 6280

Re: Things they dont tell ya when you start casting. :)

As I wrote in previous posts, I started with greensand in the night school class I was attending, and then when we switched to the other shop with Petrobond, I was convinced it was for me. I used that shop exclusively for many years, because I had a special permit even tho the night school had long ...
by RONALD
Mon May 27, 2019 1:48 pm
Forum: Riding Scale Railroading
Topic: New tool for Train Mountain
Replies: 6
Views: 869

Re: New tool for Train Mountain

Looks like a great solution to moving switches, sorta analogous to that German video were they are putting down concrete ties and welded rail. I do not have hundreds of switches to move, so when I fabricate one, I use my Toro Dingo TX427WT with either of two attachments, I fabricated for it, to move...
by RONALD
Tue May 21, 2019 7:49 am
Forum: The Junk Drawer
Topic: Apple Mac laptop
Replies: 24
Views: 1260

Re: Apple Mac laptop

I’m a long time Apple user, started with Apple IIe when they first came out, then Apple IIgs until 2002 (17 years). Had no Internet, so to get it I bought a MAC G4 in 2002. It is still running but only for Photoshop CS2, I do not need to pay their cloud fees! Last summer I purchased a MacPro, partia...
by RONALD
Sun May 19, 2019 9:34 am
Forum: Casting & Foundry Work
Topic: Mixing Petrobond I and II
Replies: 2
Views: 367

Re: Mixing Petrobond I and II

Back in the 70's I joined a Night School Foundry class at the school where I taught Physics. There were two shop rooms, one green sand, the other Petro Bond sand. We first did only green sand, and then near the end switched to the Petro Bond room, wow, the difference was quit noticeable. After that ...
by RONALD
Thu May 16, 2019 9:09 am
Forum: Live Steam
Topic: Driver Casting Repro
Replies: 27
Views: 2295

Re: Driver Casting Repro

I did some drivers by a different method, I made three Match Plates.

I then used CO2 sand to make the mold, and being hardened it was easy to bring the molds to that iron foundry mentioned below:

http://www.chaski.org/homemachinist/vie ... 7&start=12
by RONALD
Fri May 03, 2019 2:19 pm
Forum: Live Steam
Topic: Steam Distraction
Replies: 11
Views: 1043

Re: Steam Distraction

The late Tom Stockton who lived in AnnArbor and taught the NAMES Steam Course for many years was into Steam Launches, could this possibly be one of his creations. He had been a research engineer for Ford, and was a brilliant, witty, guy, and one of the founders of NAMES. I have two copies of his man...
by RONALD
Tue Apr 02, 2019 12:37 pm
Forum: Live Steam
Topic: types of coal
Replies: 29
Views: 3557

Re: types of coal

We drive up to Burlington, Wisconsin to occasionally pick up coal from these guys: https://www.centaurforge.com/Coal-Coke/products/277/

They have two locations, Burlington, and Austin, Texas.

Lot cheaper if you pick up.
by RONALD
Sun Mar 31, 2019 7:38 pm
Forum: Live Steam
Topic: Half round source
Replies: 8
Views: 1272

Re: Half round source

Here is a place that sells Half Round Brass, but you would have to look thru the sizes they offer.

And, of course, their price may be too much;

https://www.riogrande.com/product/Jewel ... oft/130449
by RONALD
Sun Mar 17, 2019 11:25 am
Forum: Casting & Foundry Work
Topic: Cylinder castings
Replies: 19
Views: 2201

Re: Cylinder castings

No, he is still in the process of lighting off the machine as far as I know.

It's too bad we live several thousand miles from Harold, (Onalaska, WA USA), you and I, I would imagine, would be eager to give him a hand.
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by RONALD
Sun Mar 17, 2019 7:42 am
Forum: Casting & Foundry Work
Topic: Cylinder castings
Replies: 19
Views: 2201

Re: Cylinder castings

Iron is something I tried many years ago, and found it was too difficult, plus the alloy could not be controlled. Harold, with his Induction Furnace is about the only amateur who could do it correctly. Here is a comment I made awhile back: http://www.chaski.org/homemachinist/viewtopic.php?f=14&t=98413