5" magnetic quad hanger
thingiverse
this is a basic hanger for mounting a 5" quad to any metal surface. it has cut outs on the bottom for nine 18mm x 5mm magnets magnets are available from amazon https://www.amazon.ca/SPACECARE-Round-Ceramic-Ferrite-Multiple/dp/B06XVPYZRN/ref=sr_1_8?keywords=18mm+x+5mm+magnet&qid=1558271276&s=gateway&sr=8-8
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