OO HO Magnetic Buckeye Couplings for NEM Socket 3D print model

I launched the Vacuum Pipe Couplings back in 2023 and many people have purchased them, personally most of my rolling stock now uses them. I have found them very reliable and the magnets work very well. I had been meaning to do these Buckeye versions for a while and with this item they are now available.

The ABS like resin is definately recommend for these when printing.

My biggest concern with this was the strength of a resin for something like a coupling, so the design was kept fairly simple to maximize the strength. As with the Vacuum Pipe design I recommend you use ABS like resin or something similar, I used AnyCubic ABS Like Resin..

Magnets used: 2mm dia x 1mm thick

https://amzn.to/3WZoThF (Amazon) Associate Link

Resin used:

AnyCubic ABS Like Resin Pro 2 https://amzn.to/4dVZoEU (Amazon) Associate Link

Please be aware that 3D printed couplings will not be as strong as injected molded couplings, with using these you will probably need spares on hand in case of any break. With the ABS-like resin I have had minimal failures but nothing is perfect.

I have included a range of sizes as different rolling stock need different lengths (Please message me if you would like other sizes). These Buckeye Couplings come in 8mm, 9mm, 10mm, 11mm and 12mm versions (Distances are measured from NEM socket to Magnet Face - see pictures).Magnets need to be glued in and you need to have the correct magnetic polarity for each magnet. This is very important for coupling together.The examples in the pictures were printed on an AnyCubic Proton M3 3D resin printer.For dimensional accuracy, I would recommend printing on a resin printer.As mentioned I used AnyCubic ABS Like Resin, I’m not an expert on what resin you should use.

Additional Info

Please check out my Website, https://sites.google.com/view/pete3dprintinghelp/home

My website has lots of useful info.