I have a trusty little 3 step Werner ladder that is great for doing work inside and outside the house. It is small, light and provides enough height to be really useful without making you feel too high up. I bought it when I got my house 8 years ago and have used it a lot since then.
The back two legs are basically straight tubes with rubber feet slipped on. They did a good job keeping the ladder stable and level, but over the years the posts have pushed through the rubber. The final straw was when I was doing something in the yard and the bag legs sank 6 inches down.
I pulled the feet off and tried to salvage them. The only real issue is the bars pushing through. Maybe “re-soleing’ these shoes is all it takes. I tried screwing down some plywood to the bottom, but ran into issues. The post is only resting on its edge, and the squishiness of the feet means they want to wobble around a lot. No good.
Time to ditch these feet and go with something new. I would try to make it all in wood, but the post diameter is not close to any standard drill bits. I want the new feet to fit tightly. On to 3D printing!
The foot design resembles the original rubbery version. The difference is that these will be hard. I added a flat parallel to the bottom of the post. The reason being is that when you fold the ladder up it only sits on the tips of these feet. Probably a lot of the reason they pushed through. This flat spot will help spread the load when stored and hopefully help it last longer. The larger flat in the upper left picture is what touches the ground when the ladder is deployed and in use.
I started with basic PLA, as a test, but they fit so well I am going to stick with the first prototypes. I might make a higher infill PETG version in the future. Until then the ladder folds up and stores well, and most importantly sits flat and stable when in use.