I recently uploaded my entire folder related to everything I've generated with regards to my efforts on grain co-ops to an all-access GDrive which you can get to by clicking here. I need to update this with the latest version of the Plastruct tubing connectors I designed using FreeCAD and printed on the Creality Ender 3. What these do is they allow you to aim all of the tubings coming from the top of the elevator. I'm doing this for my Oregon Coast RR in HO, for the Tillamook Cooperative structure. A few photos to help explain. Although not really prototypical, this may give you a chance to figure out how to aim those distribution tubes. I have no idea right now how I'm going to handle six of them though. You'll see I have single, double, and triple connectors, and also 90-degree turns and right angles. I thought this post might be timely with respect to the recent article that came out in Railroad Model Craftsman this month. Tons of STLs and FreeCAD designs related to grain handling in that folder, so check that out!
Tell you what, I'll put these latest tubing connectors STL file right here. Email me for the whole kit & caboodle. I have some sorting out to do on these files, many were tests and also I started out with different tubing before going with the Plastruct. Have fun!!
I prefer to use steel planting pins in the bases of the trees. Unfortunately it's not feasible to use for every tree kit or package of trunks, because they are cut individually. However, I do make them and use them for handmade 11 and 13 inch trees. As I've wrestled with trying to find the best way to do this, I just thought I'd share what I've learned so far. A few photos here: