My new Benchmaster is coming along great, but I've found there is quite a bit of backlash on the y axis, and some on the x axis due to excessive wear on the leadscrew nuts.
I've tried the Delrin nuts, with minimal success, mostly I can't seem to get them "loose" enough.
So, I bought a RH and LH 5/8x10 ACME threaded cylinder from http://www.greenbaymfgco.com/ACME-nuts.php since they weren't too expensive. I was then planning to build housings for them as others have done.
However, when I got them, they don't want to thread on the screws. They do start nicely but they only go on about 1/8", but are extremely tight. I haven't tried to really force them on, which I think they would, but it just feels way too tight, something isn't right. I've verified the tpi, both 10, and both .625" so I'm not sure where I've gone wrong.
I'm beginning to wonder if it has something to do with "square threads" vs "modified square threads"...or some other nuance that I've not considered with my minimal machining knowledge.
Any ideas?
Thanks
I've tried the Delrin nuts, with minimal success, mostly I can't seem to get them "loose" enough.
So, I bought a RH and LH 5/8x10 ACME threaded cylinder from http://www.greenbaymfgco.com/ACME-nuts.php since they weren't too expensive. I was then planning to build housings for them as others have done.
However, when I got them, they don't want to thread on the screws. They do start nicely but they only go on about 1/8", but are extremely tight. I haven't tried to really force them on, which I think they would, but it just feels way too tight, something isn't right. I've verified the tpi, both 10, and both .625" so I'm not sure where I've gone wrong.
I'm beginning to wonder if it has something to do with "square threads" vs "modified square threads"...or some other nuance that I've not considered with my minimal machining knowledge.
Any ideas?
Thanks