Search found 266 matches

by jscarmozza
Fri Nov 23, 2018 9:39 am
Forum: Casting & Foundry Work
Topic: How to gate and runner a car frame?
Replies: 12
Views: 1620

Re: How to gate and runner a car frame?

The frame pours are coming out consistently good using the methods described previously. The side panels are a different story. Using Big Dave's standing on edge method with flasks made from warped and twisted wood just doesn't get it done. In every one of the panel pours we made last week, just as ...
by jscarmozza
Tue Nov 13, 2018 2:03 pm
Forum: Riding Scale Railroading
Topic: Building a model of a GG1
Replies: 12
Views: 1229

Re: Building a model of a GG1

Ron, this is how I mounted the body on my 1" GG-1. On top of the chassis is a 3/8" plate that I referee to as the surf board, it's pinned to the cassis at two points, on one end is a snug fit in a round hole, on the other end is a sliding fit in a slotted hole. The pins are mounted on rockers so the...
by jscarmozza
Wed Oct 31, 2018 7:38 am
Forum: Live Steam
Topic: Oil firing in 1" scale
Replies: 15
Views: 1871

Re: Oil firing in 1" scale

Thank you all for the information and advice, along with what was posted here I found some information on line and in a few old live steam books a friend loaned me, the bottom line for me is that I don't know enough about the subject or the boiler on my new engine to be comfortable with oil. Again, ...
by jscarmozza
Fri Oct 26, 2018 5:32 pm
Forum: Live Steam
Topic: Oil firing in 1" scale
Replies: 15
Views: 1871

Re: Oil firing in 1" scale

Would a boiler be built specifically to be oil fired, with special fire box dimensions? This boiler is all LE, exactly the same as my other Atlantic, does that eliminate it from consideration? I also took a look at the fire box bottom that contained the original nozzle, as Greg Lewis said, the steam...
by jscarmozza
Fri Oct 26, 2018 8:47 am
Forum: Live Steam
Topic: Oil firing in 1" scale
Replies: 15
Views: 1871

Oil firing in 1" scale

I recently acquired another 1" Atlantic, this one was originally oil fired and later converted to coal. The coal conversion wasn't done all that well, so I considered whether to redo the fire box, ash pan and grates for coal or go back to oil. From what I have read and what I was told by my club mem...
by jscarmozza
Fri Oct 19, 2018 2:08 pm
Forum: Casting & Foundry Work
Topic: How to gate and runner a car frame?
Replies: 12
Views: 1620

Re: How to gate and runner a car frame?

I made my experimental pour today with a new larger crucible (10# AL) and it went fairly well and was, as usual, a learning experience. First thing I realized when making the car frame pattern was that a 32" long pattern was going to be too big for me to pour and handle, flask weight wise. I decided...
by jscarmozza
Wed Oct 03, 2018 5:32 pm
Forum: Casting & Foundry Work
Topic: How to gate and runner a car frame?
Replies: 12
Views: 1620

Re: How to gate and runner a car frame?

DavidF, you're correct...I'm right at the volume limit of my no. 8 crucible; I may have to buy a larger one. I have a two man ladle and a one man ladle, so if I beat the bushes I may be able to find a third man to try a double pour. I have a big Johnson (furnace that is) and I think I can fit two no...
by jscarmozza
Wed Oct 03, 2018 8:00 am
Forum: Casting & Foundry Work
Topic: How to gate and runner a car frame?
Replies: 12
Views: 1620

Re: How to gate and runner a car frame?

Attached is a photo of a 1/2" scale car frame that I made a few years ago, the 1" scale frame I want to make is similar but bigger. I acquired a set of LE caboose plans, and since I've wanted a caboose, I figured they would be a good starting point. After studying them, I realized that the LE versio...
by jscarmozza
Tue Oct 02, 2018 3:12 pm
Forum: Casting & Foundry Work
Topic: How to gate and runner a car frame?
Replies: 12
Views: 1620

How to gate and runner a car frame?

I was thinking about casting a frame for a 1" scale caboose, but I can't quite figure out how to gate the mold. A few years ago I cast a few frames for 1/2" scale cars and it worked very well. That frame was similar to a ladder and I gated with a riser into each ladder rung, but this frame is much b...
by jscarmozza
Fri Sep 14, 2018 6:55 pm
Forum: Casting & Foundry Work
Topic: Question regarding graphite crucibles
Replies: 9
Views: 1034

Re: Question regarding graphite crucibles

As I looked into the matter it became clear that graphite is okay for induction ovens and a total misapplication for a gas furnace. My mistake. I found a source for for small clay/graphite crucibles and I'm awaiting delivery. Thanks to all. John
by jscarmozza
Thu Sep 13, 2018 8:35 am
Forum: Casting & Foundry Work
Topic: Question regarding graphite crucibles
Replies: 9
Views: 1034

Re: Question regarding graphite crucibles

Exposed to open flame these things burn up like a piece of coal, do any of you know a source for small ( a half pound or less capacity ) silicon carbide or clay graphite crucibles? Every now and then I want a small casting and don't want to fire up the big crucible furnace for just one item, a small...
by jscarmozza
Thu Sep 13, 2018 6:53 am
Forum: Casting & Foundry Work
Topic: Question regarding graphite crucibles
Replies: 9
Views: 1034

Re: Question regarding graphite crucibles

Thanks Harold, when everything cooled down yesterday I inspected and measured the crucible, the wall thickness was reduced to half the original dimension, I was wondering why the walls were so thick on the new crucibles. Well, the two that I bought cost me $12.00 each and served their purpose, but I...