Magnetic Bulkhead for filament dry box,

Bulkhead fitting for filament dry box, using the magnetic joiner concept. requires a 12mm hole, 5mmx3mm magnets, qty 6 per bulkhead fitting and cover, available from Amazon : 5mm dia x 3mm thick N42 Neodymium... https://www.amazon.co.uk/dp/B01LCXPGXE?ref=ppx_pop_mob_ap_share O-rings 9mm OD, 6mm ID, 1.5mm Thk also available on Amazon: sourcing map Silicone O-Ring, 9mm... https://www.amazon.co.uk/dp/B08F27Y6BB?ref=ppx_pop_mob_ap_share Added some additional photos showing how I flatten the end, and it stops it pulling back through the bulkhead, and the cover can be placed on to seal it up.