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Fence Post Cap

How to protect a fence post against moisture.

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To expand the life span of a fence post it is recommend to protect it against moisture. Hardware stores have a pretty collection of metal cap. But if you are an owner of a 3D then it has to be a self-made cap.

This cap is made up of two parts the bottom and the top. If your 3D printer has two extruders you can feed the second extruder with a water-soluble filament like PVA to print support structure, so that you are able to produce the cap in one piece. The cap has a inner dimension of 78mm so it is made for posts with an edge length of 70mm but feel free to scale it up or down. 

It is recommend to use a more durable filament like PETG that is my favourite. Normally I prefer PLA, it is easy to print, cheap and is not made for eternity. There is already enough plastics in the world. But depending of what is your application sometimes it is better to use more persistent materials.

PoleHat_Top.stl

top of the cap

Standard Tesselated Geometry - 22.25 kB - 02/12/2019 at 18:51

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PoleHat_Base.stl

bottom of the cap

Standard Tesselated Geometry - 32.04 kB - 02/12/2019 at 18:51

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jessibrown wrote 07/18/2021 at 18:36 point

Thanks for sharing this post! I got many information regarding 3D designing projects! Gardening and fencing are two elements to have a well decorated design. I have been working as a fence installation expert at this https://www.napervillefence.com/composite-fence site and help people with fencing needs.

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Dan Maloney wrote 02/12/2019 at 21:59 point

Nice, I did something similar with my driveway post light. It has a decorative cross-arm with plastic caps that degraded to nothing a long time ago, so I whipped up some new caps in Fusion 360 and printed them in gold filament. Looks more like brass, which is actually perfect. And when they wear out, I'll print new ones.

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