Hi! I have a set of threaded dumbbells and a threaded barbell. I also got a curl bar (not threaded) in a bench set I bought. Anyway, I have no idea how I can quickly change weight plates on these things. I do not have enough money to invest in 3-4 more barbells. So, my questions are:
1) Does anyone have any tips on quick changing threaded bars? I tried using the spring clip that came with the non threaded bar but it doesn't work.
2) Can I use the curl bar instead of a barbell in order to be able to change the plates quickly?
Any help would be appreciated. Thanks!

