Modeling general discussion

Radio Control
I live near a major rail yard and often see engineers "on the ground" controlling their switching locomotives with a small "belt pack" radio control unit.
Here is a close up of a typical controller.

Train Detection and/or Observation on Hidden Track
I have several locations on my recently started layout that will have some hidden trackage where I plan to stage trains. I had originally planned to use optical detectors to show me where a train is on this track and when to stop it (when returning to staging).
I've been wondering though if I should consider using several cameras strategically placed, all tied to a small monitor. It seems that it would be easier to determine exactly where the trains are, their speed, direction, etc. using a system like this.

Just read about a new 3D printing concept
Apparently Staples is going to roll out 3D paper printing on the model of just bringing in the design and print it. This is starting rollout in the spring and is figured to expand to all Staples stores.
So, how is this going to effect modeling. Will we be able to design out custom models and then just walk down to Staples and print them out?
The article went on to say that this was to be 3D paper printing. So, we can't build running engines this way, but I'll bet we could do buildings and custom car interiors?

Weekend Photo Fun 11-30 to 12-2
Post your model railroad pictures here.
How do you categorize your YouTube videos?
Every time I post a video on YouTube, I scratch my head as to how I'm supposed to categorize my Model Railroad Videos. I usually put them under "Howto & Style" or "Gaming" or maybe evern "Education" or "Entertainment". None of the choices seem to fit what the video is about, so I usually also add lot's of tags.
How do you categorize you model railroad YouTube videos?
PC Ties Supply
Question: Where can I get pc board ties?
My LHS has had them on order for what seems like months. http://www.handlaidtrack.com/ seams like the 1/16th in. switch ties have been on perpetual back order (they do have 1/32 in.). So, is there another place to get them?
Tonkin to produce HO scale Caterpiller models
Hi all.
I did a quick search and didn't see anything mentioned on here regarding this, but if there is, please just disregard this.
Grab Irons for Walthers Gondola Kit - Make or Buy?
I found a Walthers P2K Drop End Mill Gondola kit at the shop today for $10 and decided to give it a try. Come to find out that it's missing the grab irons. I've never done any of the more detailed kits like this, and ironically this would have been my first attempt at installing grab irons.
Can they be found pre-bent somewhere, or do I need to learn how to do it myself sooner than I wanted to?
What should I search for in an airbrush
I'd love to get myself a decent airbrush; currently I use brush and spray can. It seems like th holiday and post holiday bargains are the best time to shop, too.
Realistically, what are good choices. I'll be using it occasionally for painting and weathering rolling stock and scenery--nothing huge. I don't want to get ripped off, either by paying too much, or by ending up with junk. I'll be using paints like Foquil, and also some water based paints.
What features should I look for, and which brands are decent to good?

Weekend Photo Fun 11-23 to 11-25
It's that time again to share your favorite Model Train Photo's with millions and millions of train fans.
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