collectors
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ref: but it's free to join and no adverts....................................just be "BRAVE" browser !!! wink wink, not had any ads for a long while !!!!Sorry, but a bit of a blatant plug. There are some downloadable files for 3D printed magnetic couplers which can be pushed as well as pulled and are reversible on the Garden Rails Forum.
To access them, you need to register - but it's free to join and no adverts
Rik