Can anyone pols help me decide whether to use under-the-table Tortoise switch machines or Caboose Industries above-ground ground throws on my Atlas turnouts on a 1980s layout? I would like to eventuually use these switch machines, but sure whether cost and value are worth it. There’s no issue getting the wire through the 2"in foam to the proper hole. How to secure the switch machine under the table. Duct tape?
I am unfamiliar with your benchwork design, could you describe it. Do you have plywood under your foam? If not you will have to install a board under your foam in the areas where you want the tortoise. The tortoise is attached to the layout using panhead wood screws #4 or #6 should work just fine.
Also, you will have to make your own throw rod for activating the turnout. The throw rod is about 3" long, and the tortoise is about 2" from the moving part to the mounting plate on the bottom, which will not reach through your foam. .032-.047 rod is about the correct diameter. http://www.hobbylinc.com/k-s-hobby-and-craft-metal-wire-and-metal-rods I dont recommend buying a whole case. You will probably only use 1-2 36in rods. Hardware stores typically carry K&S products.
Caboose Industries ground throws are easy to install, but they are not to scale (operatable ground throws cannot be to scale, due to our hands being 12"=1ft scale).
IMO, one of the big advantages of a manual throw is that visiting engineers/crewmen, have n o problem determining which throw moves which turnout. Contol by toggles, etc can become confusing.
On the other hand, long reachs or tight track work is better with electrical control.