Yeah, the dowel was a back-up plan. I tried the drop-in anchor first because there's no need to drill and it's self-centering. And drop-in anchors are cheaper than compositpro's inserts, and I'm not sure those inserts could accept a bolt through the rear.
I finally tried the drop-in anchor. I...
I don't think I did enough research into square tube inserts, but those particular ones wouldn't hold. There will be a lateral load. A small shelf will be attached to the top of two of these:
This is for something that I want to be fairly easy to build (no welding, tapping threads, expensive machinery, or buying large quantities). I want to attach a 1/4" bolt to the inside of a mild steel square tube that has a 3/8" ID and a 1/16" wall. The tube will support a small shelf and the...
Does anyone know whether a helicoptor can be fitted with a clamshell bucket like some cranes have ( http://www.truckutilities.com/images/Crane%20Accesories/TUCA-clam.jpg ) to help carry away mud? I was wondering about that when I read about the rescue effort in the Philippines.
