Good to see you are making progress.
The nut must match the screw. If its not listed I would guess single start, but thats a guess. If you can't find the information, call them and ask.
The Enco ACME screws are single start. I have them. The nuts have to match the screws.
I just finished my JGRO (Long Island)
dumpstercnc lists the enco part number for the leadnuts. Enco [part# 408-0200]
I got the longer section for only slightly more.
Man I wish I could have a machine cut my parts for me . Everything is a struggle. I have to make the bearing mounts soon, so I got a special 1 and 1/8 bit. Can't wait to try making these pieces out of mdf with my chop saw and drill press .
What a pain . I attached a picture of the dumpster stuff plus some odds and ends. The dumpstercnc stuff looks fine, although, one of the screws is a different head size that the others?
I thought you might like to see a video of ubuntu 8.04 turning the hobbycnc 305's with the EZ board .
"http://www.youtube.com/watch?v=qgX3Je8f9Qo"]YouTube - stepper driven by EMC2 and Ubuntu 8.04
I also don't like using the circular saw....takes a long while to get the fence set and clamped such that the motor doesn't contact it and it's square....
To make the flats on the angle iron I used my table saw and a metal cutting wheel. I set the height of the blade to mach the depth I needed for the flat. I made a little guide out of scrap MDF....I cut a few pieces at 45 degree angles and clamped them together. I use this to keep the flat perpendicular to the cutting blade. Worked great! I would also recommend drilling the hole after making the flat....my bit had a tendency to wonder on the peak.....
You can cut the aluminum with a carbide tipped blade. Makes an awful racket, but slices through like butter. I used my miter saw to cut to length, and made the flats with a course file. Cut holder for the angle by cutting 2 parallel slots in a piece of scrap the right width apart about 1/8" deep.
See, I did it a third way. I took a 2by4 and drew two 45 degree angles on it, and then cut it with my circular saw to a shallow depth like a half inch. I repeated for a second. I then clamped the aluminum angle in it and then turned it upside down on my router table. You couldn't see what you were cutting, but it worked very well and made a perfect flat.
You had to adjust the depth of the router bit, but this worked extremely well.
I will take a picture of this advanced jig in the future, no time tonight.
I've recently gotten back to my JGRO build, and This time I'm commited to
finishing it! Base and gantry built & painted, bearings and Z axis not complete.
I'm using the HobbyCnc 305oz motors with their kit, and have completed
putting the kit together with the exception of the heatsink.
I have an old Dell computer set up to dual boot with Windows XP and Ununto
(The EMC2 live disc installed to the hard drive). It's been a while since I set this up, and I'll be re-installing the latest Ubunto/EMC2 soon.
Sooo... would you kindly share you EMC stepper configuration file, or any tips
on configuring it?
I'm also using the 1/2 10 ACME 1 start threaded rods throughout.