Anyways, a friend of mine knows I am into my props and he happened to be going through a thrift store today. He is one of those types of guys who likes checking out what others call JUNK, lol. Anyways, in a zip lock bag were these two knobs. He knew I had just finished a ghost trap and he recognized those knobs right away as something that looks like it would go on the trap but he wasn't sure. Anyways he brings them to me, I check them out and I am blown away. I pull out the digital calipers and measure them and sure enough they share the measurements of the knobs that are on Sean's Ghost Trap plans!!! I can not wait to resin cast these. I will make it a two part mold that way the hole is still on the resin copies for those who wish to add them and still make them turn. Since these ones have a "D" shaped hole instead of a round one, I am guessing you can use a pot that has a D connection or you could drill the resin carefully to a round one to connect it however you would. Unless of course you would want to glue them into place. Anyways, I feel like this is an AMAZING addition to the resin casted ghost trap knob kit that I plan to create.
As for the "teardrop" pointer knob.... Those are very hard to come by but my buddies uncle has a lot of vintage military stuff so he said he will look, I'll just have to cast it and make sure he gets it back if they do have one. If not then I may have one fabricated to the exact dimensions. I know I could always 3D print one but there is just something very sketchy to me about 3D printing things as small as knobs and then resin casting them and I don't want to do that. As for the "square knobs".... I'm thinking they were actually once "Sliders" instead of actual knobs that turned. I would be willing to bet the the metal decoration on top of those was just some sort of add on to dress the knob up. For all we know it could be a square / rectangle shape with a hole drilled in the bottom and a decoration put on top. I will find out all I can over the next week or so because I plan to resin cast a full knob kit and throw in the resistor too very soon. Stay tuned guys!