I feel kind of late to this thread (by nine days) but I provided a friend of mine with a wuji and some n35 4x2s and 3-5 hours later out popped a wuji m! It feels pretty nice but the magnets are a bit too strong. I now have two wujis, three wushuangs, I didn't have the right magnets for the inner layers of the wuques, valks, weilong GTS (not surprising), and finally two weipos. I would also do some wuhuas but they aren't here yet and the gts2m I bought pre-magnetized. They feel kinda weak so there will definitely still be a market for the homemade ones.