I'd like to do some titanium work, and have been reading about the material, but know neither a good (i.e. inexpensive) source of titanium or which alloy might be the most machinable. OnlineMetals offers 6AL/4V ELI, 6AL/4V GRADE 5, and CP GRADE 2 with the latter running $135/foot in 1" diameter bar.
Can anyone offer advice? Thanks.