Cap for 4" OD post
thingiverse
Custom cap for a 4" outer diameter round post with 1/4" thick walls. Designed to prevent water / debris from entering your post. I designed this with an inner lip to fit inside the post so it needs no other securing. The fit is glove tight. You ought to be able to scale it up / down to fit another size post. I printed with a 5 line brim, since it warped during my first print. otherwise, printed with no problems.
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