I Bought a Cheap Rotary Table Which Was a Big Mistake

Comments · 298

• AR

  @artisanmakes · 3 years ago · pinned

  Should go without saying <a href="https://www.youtube.com/hashtag/notsponsored">#notsponsored</a> and I cant imagine they&apos;d want to after this video. Cheers

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• AD

  @AdrianMNegreanu · 3 years ago

  Hats off for the non-click-baity title 👍

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• DI

  @dieselwelds8645 · 3 years ago

  Maybe you already caught it but at the end when you were facing the top of your part in the 3 jar chuck it tweaked over some in the chuck. You can see the gap between the chuck face and the part and it&apos;s still there when you have it tilted. That kind of stuff just frustrates when so much time is involved. Great job and thanks for all of the content!

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• MA

  @MatthewHolevinski · 3 years ago

  I about spit out my coffee when I saw the effects of that locking screw, that is absurd, and such an easy manufacturing and design fix.

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• MI

  @Michel-Uphoff · 3 years ago (edited)

  My reply from 5 hours ago has gone? OK, rinse and repeat:<br><br>It turns out that the construction of this particular device leaves a lot to be desired, which reminds me of my old crappy rotary table. But, you can fix it I think.<br><br>Unscrew the hex bolt from the bottom of the table spindle, and put a longer old bolt in there, so that you can tap or push the table out of the bearing. You will see that only the bottom has a bearing, and the top of the table has none.<br><br>I have changed this lousy construction by turning a recess in the housing about 2mm deep, into which the underside of the table fits accurately. The housing just fitted in my 4 jaw chuck. I also removed a few tenths of a mm from the bottom of the table, now it runs true. The axis of the table has been shortened slightly (2 mm and a bit), so that the table can sink 2 mm into the recess. I tightened the hex bolt until the underside of the table nearly touches the bottom of the recess. The table is now also supported at the top by the recess, which improves the rigidity enormously and now it turns much more accurately.

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• HI

  @Hilmi12 · 3 years ago

  We use worm gears a lot in astronomy, many times performance can be drastically improved by lapping the gears. Also setting backlash settings too tight will cause binding especially if worm gear or the ring gear are not concentric

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• PE

  @peter.stimpel · 3 years ago

  Once more this makes just one thing clear: no matter what you buy and from which brand you buy: it is about the expected QC, not so much about where the factory is located.

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• NO

  @Nobody-Nowhere-USA · 3 years ago (edited)

  These cheap rotary tables actually have their uses , you can use them to make precision (sort of) specialty fixtures you want to leave set up permanently! As someone that has spent thousands of dollars on rotary tables I can say it’s a lot easier to handle not having access to a cheap one rather then that really expensive RT you trust with tight tolerance work!

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• HA

  @harmlesscreationsofthegree1248 · 3 years ago

  Gotta love a video with a title like that! I’m in for the ride 🙂

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• ST

  @stevebloke5455 · 3 years ago

  I bought a non tilting rotary table from Qtech tools who claim to be an Australian company for $150. &nbsp;Wish i had saved my money because it is a piece of crap! &nbsp;it looks good on the outside and that&apos;s about it. i mounted a piece of mild steel to open up a curved slot (cutter diameter was less than the slot) with a light cut the end mill grabbed and spun the table (10/15mm) and painted a racing stripe in my jocks. &nbsp;Nun the less i finished with a hand file and wont use it again until i strip it down and assess the issues. &nbsp;Qtech had very poor customer service, &nbsp;I won&apos;t buy from them again!! &nbsp; &nbsp;Great video keep up the good work. Ps. i haven&apos;t forgotten that gearbox casting you did a while back.

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• DA

  @daxgilmore4374 · 3 years ago

  I bought the same one a few months ago.<br>It&apos;s Awesome after a few little mods and about 6-7hrs of Black Dog-inspiring work.<br>I had to fully dismantle to clean out all the swarf from manufacturing. The operation was rough as guts!<br>Add a Brass &apos;Race&apos; between the Face Plate/Body. <br>Debur and re-Index the Worm Gear before it sheared the teeth off its mate, which was also re-indexed.<br>Added a sealed bearing to either side of the Hand Wheel. <br>I would also Slot one of the Mounting Holes, as the unit won&apos;t sit parallel to your Table.<br>Add a Spring under that cute lil Table Lock Bolt before it vibrates out and shoots your neighbor.<br>Nipping this Bolt up to drag helps reduce Harmonics.<br>However, you can get the s**Ts, coupled with an optimum RPM for the Spindle around 3000+ to take advantage of the Chatter.<br>The table practically revolves itself!

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• TR

  @TrevorDennis100 · 3 years ago

  I worked 40 years as a toolmaker and design engineer at Ford UK Product Development, and I loved the rotary table we had in our workshop. &nbsp;For many years, we had no hoist, and the dividing head was too heavy to be easily moved by one person. &nbsp;But most of all, the rotary table is so simple and quick to use if you just needed half a dozen indexed holes that you could click into the marked indents. &nbsp;It looked like you were using a multitoothed rose bit to cut the chamfer. &nbsp;My experience is they try their very hardest to chatter and leave a poor surface finish. &nbsp;I use Chinese cheep-as-chips single edged countersinks in my home shop and at the Menz Shed, and so long as you keep the speed down they do a lovely job and last for ages. &nbsp;I have even seen Kurtis from Cutting Edge Engineering Australia use one to machine wide chamfers on parts, although he would be using high quality, and expensive, tooling. &nbsp;This is the first of your videos I have watched, and I&apos;ll be subscribing for sure.

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