Search found 265 matches

by OddDuck
Tue Sep 17, 2019 6:18 pm
Forum: Grand Scale Railroading
Topic: A wish list for large scale castings
Replies: 19
Views: 499

Re: A wish list for large scale castings

Glenn, PM sent.
by OddDuck
Sun Sep 15, 2019 12:54 pm
Forum: Grand Scale Railroading
Topic: Link and pin couplers in 2.5" scale
Replies: 29
Views: 1199

Re: Link and pin couplers in 2.5" scale

And the pile starts to grow... Seven pair cast so far, more to come. I will let everyone know when I am ready to take orders.
by OddDuck
Sat Sep 14, 2019 5:45 pm
Forum: Grand Scale Railroading
Topic: A wish list for large scale castings
Replies: 19
Views: 499

Re: A wish list for large scale castings

Yeah, that's a bit larger than I could handle. That's definitely in the commercial foundry range, just from a safety standpoint. That's a lot of iron. And several hundred pounds of sand per mold. Not to say that it would be impossible in an amateur hobby foundry, but difficult. If it were me, this i...
by OddDuck
Sat Sep 14, 2019 7:53 am
Forum: Grand Scale Railroading
Topic: A wish list for large scale castings
Replies: 19
Views: 499

Re: A wish list for large scale castings

Chipsahoy, it would definitely help with making perfect mirror images. Was that just the pattern or the resulting casting?
by OddDuck
Fri Sep 13, 2019 10:02 pm
Forum: Grand Scale Railroading
Topic: A wish list for large scale castings
Replies: 19
Views: 499

Re: A wish list for large scale castings

Definitely old school (kinda sorta) pattern making here. I've thought about getting a printer, but I'd use it to make patterns for sandcasting instead of investment. Just out of curiosity, how big is the cylinder block? I am somewhat limited size wise. There's only so much one person can lift safety.
by OddDuck
Fri Sep 13, 2019 9:11 pm
Forum: Grand Scale Railroading
Topic: A wish list for large scale castings
Replies: 19
Views: 499

Re: A wish list for large scale castings

Everything? No prob. When would you like it? Haha... I suppose I opened myself up to that. That's the nice thing about being a hobby foundry and doing my own pattern work, small jobs aren't a deal breaker. Might take me a while, though. If you have dimensioned drawings it helps.
Pumps, ok. What else?
by OddDuck
Fri Sep 13, 2019 8:18 pm
Forum: Grand Scale Railroading
Topic: A wish list for large scale castings
Replies: 19
Views: 499

A wish list for large scale castings

Ok, so it seems like I have broken into casting things for large scale stuff. I have been told by several people that there is definitely a scarcity of suppliers for the larger scales.
Here's my question. Aside from trucks, what would you like to see cast for the larger scales?
by OddDuck
Mon Sep 09, 2019 10:32 am
Forum: Grand Scale Railroading
Topic: Link and pin couplers in 2.5" scale
Replies: 29
Views: 1199

Re: Link and pin couplers in 2.5" scale

I'll be casting this week, hopefully have a dozen or so sets ready to go by the end of the week. I'll keep you posted.
by OddDuck
Sun Sep 08, 2019 6:08 pm
Forum: Grand Scale Railroading
Topic: Link and pin couplers in 2.5" scale
Replies: 29
Views: 1199

Re: Link and pin couplers in 2.5" scale

Glenn, I concur, after doing that test I'm not going to use 5/16" bolts, the cast in ones will be 3/8". if someone wants 1/2", they will need to get the no-bolt option and drill and tap it themselves. My concern with using 1/2" is that may be enough thermal mass to cause a short pour, and there won'...
by OddDuck
Sat Sep 07, 2019 7:53 pm
Forum: Grand Scale Railroading
Topic: Link and pin couplers in 2.5" scale
Replies: 29
Views: 1199

Re: Link and pin couplers in 2.5" scale

And here's the video:
https://youtu.be/H5KwY-7gK04
It was as I suspected, it bent rather than snapped. I didn't even bother to try the 3/8" one.
by OddDuck
Sat Sep 07, 2019 5:49 pm
Forum: Grand Scale Railroading
Topic: Link and pin couplers in 2.5" scale
Replies: 29
Views: 1199

Re: Link and pin couplers in 2.5" scale

Success! They turned out pretty good. Test cast complete, I will be doing a bending test on the embedded bolt to test wether or not the strength of the bolt was changed drastically. One of them is a 5/16" bolt, the other one is a 3/8".
by OddDuck
Tue Sep 03, 2019 8:29 pm
Forum: Grand Scale Railroading
Topic: Link and pin couplers in 2.5" scale
Replies: 29
Views: 1199

Re: Link and pin couplers in 2.5" scale

Tell ya what, I'll do some destructive testing when I cast the first one to test the theory. I think they should be okay, there will be no change of state to the bolt, only the metal being cast around it. The sand that the bolt shank will be set in when the mold is made should serve as a heat sink t...