DPReview.com is closing April 10th - Find out more

CNC macro rail

Started Jun 30, 2015 | Discussions thread
CheleA Regular Member • Posts: 269
Re: CNC macro rail

Here is another option for the drive mechanism http://www.thomsonlinear.com/website/com/eng/products/ball_screws_and_lead_screws/lead_screws/xc_adv.php

You can get those to use screws as small as 3/16", reducing the weight/bulk/price.  Of course, if you want absolute precision -- you need a precision ground ballscrew:(  Keep in mind that not all ballscrews are precision or zero backlash.

I had tried to make something similar to what you are doing, however, I couldn't come up with a design that I liked.  One major difference is that I didn't want/need the automation you are trying to accomplish -- there was no need back then, it was just 35mm and no option to focus stack.  The only device I came up with, and liked, was this.  I do a fair amount of macro but don't go past 1:1 and haven't tried stacking -- yet.

Post (hide subjects) Posted by
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow