3D printing has simplified the creation of many things, but part of making something is knowing just how much you can rely on it. On the [BubsBuilds] YouTube channel, he built a cheap rotary table and then walked through the process of measuring the error inherent in any rotating system.
Starting with a commercial rotary table, [BubsBuilds] decided he wanted a rotary stage that was both lighter and had provisions for motorized movement. Most of the rotary build is 3D printed, with the large housing and table made from PETG, and the geared hub and worm gear printed on a resin printer. The bearings used to support the worm gear are common skateboard bearings. There is also a commercial thrust bearing and 49 larger 9.5mm ball bearings supporting the rotating tabletop.
More after the break…
There are three different types of runout to be measured on a rotating stage: axial, radial, and angular. Axial runout is fairly straightforward to discern by measuring the vertical variation of the table as it rotates. Radial runout measures how true the rotation is around the center of the table. Angular runout measures how level the table stays throughout its range. Since these two runouts are tied to each other, [BubsBuilds] showed how you can take measurements at two different heights and use trigonometry to obtain both your radial and angular runout. This is a great walkthrough of how to approach measuring and characterizing a system that has multiple variables at play. Be sure to check out some of the other cool rotary tables we’ve featured.
I’m curious to know the reason behind the number of articles including the words “More after the break” lately. I’m on the latest version of Chrome, and the article previews when looking at the main site barely get two sentences in before the “…read more” link: In other words, the “More after the break” part is a good paragraph and a half past the break, and not showing up on the main site for me at all.
I had the same question but I thought it was maybe one writers style. Looks like it’s not.
Previews on the first (home) page are much shorter, maybe that’s why.
From the second page onward break links work.
Use https://hackaday.com/blog/ instead for normal behavior
Did you have any time to breathe during this 9 minute video?
And what is happening at around 07:41?
You’ve found some kind of systematic error, and without analyzing it’s origin you just subtract it from your measurements to eliminate it?
Could y’all stop the “more after the break” crap? The “break” is different on every computer, depending on resolution and who knows what all else. Your “after the break” is just some random spot in the middle of an article. All it does is look stupid and break the flow of the article.
Perhaps a simple ellipsis