Looking to upgrade some of the hardware on my Printrbot LC. I’ve been told the first things to upgrade are the belts/pulleys and the Z-rods, both of which I’ve found on the Ultimachine store. Are these threaded rods ones I’ll want to stick with for a while? I saw in various places that people use ACME rods and nuts for the z-axis, but I either can’t find that or can’t find it in a length that isn’t 2m long. Will I still need to get a brass nut to use with this because they’re zinc-steel?
And, while you’re being wonderful and kindly answering my questions, can you give me a quick summary of why a brass nut is better than a steel one here? Or at least point me towards where I can research this? Thanks.