Friday, March 26, 2010




So far just following the build for the McWire.


i have not mounted the steppers yet. but i did add the threaded rod.



this is a 285MM LEAD-SCREW AND FOLLOWER from http://allelectronics.com/ (it looks to be sold out. And i would not know wear to get more).
mounting this was harder then i thought it would be. What i endded up doing on the X and Y axis was cutting C Blocks out of MDF. tapping them for a 4 40 screw to lock the Follower in place. you can see the bolt at an angle in the photo.
Then tapping a 4 40 screw to hold the bock in place from the top of the board.
It works well, i can adjust the lead screw up and down, and change the angle left and right. we will see how it holds. I cant change the angle the lead screw up and down. that angle is based on the face of the inside of the C block.

i tryed doing this with out the c blocks, just cutting out the shape of the follower, and tapping the mdf, what happen was me splitting the mdf.



This is how i messd up on mounting it. i endded up cuting out the bad part.

The new lead screw should give me a faster travel speed on the X and Y axis. As i hear the slow pitch of the 1/4 threaded rod is one of the biggest down sides of the mcwire. This may be a fix for me, but not for the masses. As the rod's can not be rebought

3 comments:

paul said...

Are you using anything to lubricate the screws?

Longertoes said...

Not yet, there of a hard plastic, both of the follower and the screws.

i have some dry film silicon that should work

Anonymous said...

I think that for a plastic you have to use a teflon based grease.