Mini Lathe Cross Slide Improvements
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- เผยแพร่เมื่อ 25 ก.ค. 2020
- In this film I give an overview of the modifications I've made to improve the performance of the cross slide on my 7x14 Chinese mini lathe. I replace the hard to use graduated dial, add bearings, increase the cross slide travel and make a replacement gib strip.
Details for the homemade aluminium anodising setup mentioned in the video: • Small Scale Aluminium ...
Details for the homemade tailstock die holder mentioned in the video: • Building A Tailstock D...
Details for the homemade rotary broach mentioned in the video: • Rotary Broaching a Hex...
Approximate imperial sizes are shown. They're not direct equivalents, but are intended to give the non-metric viewer a rough feel for what I'm doing.
Made with subtitles -click the CC box.
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For the material I couldn't capture myself, my thanks goes to the following:
Whoosh by Aysonny
freesound.org/people/Aysonny/...
Licensed under a Creative Commons Attribution 3.0 Unported License ( creativecommons.org/licenses/... )
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Shot: HDC-HS700 1920x1080 50P AVCHD
Edit: FCP7 ProRes 422
Mic: DR-05
The extension of the lead screw at 2:24 is pure genius ! thanks for sharing.
Wow! What a briliant job! The anodizing is amazing.
Wow, I really liked this video and would have liked to seen a bit more of the process. I am so glad that you made it instead of just leaving the footage on the shelf! This is very inspiring, Thanks!
By the time you have finished all your improvements you will have a top class lathe. Very interesting viewing.
If only the lathe makers in china thought at all about any of this. I doubt any of them even use the products.. sherline makes sherline lathe parts with sherline machines. These mini lathes are just a tad worse than hit/miss. I had to go through 3 to get a working one, first had a major defect in the bed, it was knife thin on am inside section and snapped when l clamped the tailstock, had to pay $15 restock fee. Second one, the spindle runout was terrible, chuck was mounted within 20 thou, another $15 restocking fee. Third one has minor versions of these two problems but l figure l already wasted money, the threading feature is outright useless, slop all over. I have a very old and beatup unimat that is about as clapped out as a new mini lathe. Their qc department is more interested in bat guano flavored bubblegum and sticking their peckers into dead freshwater fish than pushing through true lathes. I hope their business tanks and out of its ashes other lathemakers pop up. Their quality is a joke, a product should not require that much modification just to work properly, guess this is the chinese way..
Very good ideas. Your planning, preparation, and presentation of the project and especially the video are excellent. It demonstrates your consideration for the value of viewer time. Very neat. Great job.
The recreated gib is a great idea that I’m going to do after the holidays. I have a phosphor bronze bar that should work. Thanks for the idea!
Amazing effort dude.
I took the other route and upgraded the whole machine.
Now I’m fixing something bigger!
I need to do some work on my cross slide. This video has encouraged me to do it.
Great job, these little videos are always a big help.
Excellent ideas that prove how much you have studied your machine. Glad I watched.
I like your extension to the cross-slide leadscrew. Great idea
Great video. One of the best I have seen for mini lathes.
Great video! These little lathes are a nice to have but need a lot of improvements! Thanks for sharing, will definitely be incorporating some of your ideas!
simply brilliant!
I'm probably going to make all of these improvements
Thx for making such high quality content!
Nice! Superb work. I feel inspired
those are some amazing details on those ideas!
Makes me excited to start working on my own lathe... !
Thank you for the ideas; I do believe I'll pinch several of them.
Very cool upgrade. Thanks for sharing!
Great video and improvements. Thank you for sharing
Just subscribed. Really solid ideas for improving a mini lathe, or any small hobby lathe!
I have implemented some of your ideas. Thank you for your contribution and knowledge sharing. Cheers.
Very nice work.
Thanks for sharing.
Videos are so well made, brilliant nice and clear
Excellent work.
After all the cool improvements for my mini lathe, I forgot what I originally wanted to make when I bought it!
I did the same thing to the dials on mine - those 0.025 units drove me mad. (I made the dials and scribed the divisions on the lathe - turned out pretty well). I also had the same problem with the gib strip - flattening the mating surface helped, but it also needed the places where the screws bear facing off flat. Now it sits in position OK.
Finally found myself a new clicksprings
Now that you mention it.....
:)
Loved your video.
You do great work.
Very well done...inspiring!
Excellent ideas and very well executed...I wish I could do that good of work.
What a great little video.......just found you on here so hope there are more like this.
That intro is honestly so cool and btw I found your channel today, it's a good day
Superb docmentation of the mods. I'm going to do all these. The anodizing should be entertaining. Cheers.
Great stuff man, thanks for sharing.
Cheers
Thank you for these tips! I have a shitty mini lathe too and everything has slop.
Excellent, subscribed. We put your video on our homemade tools forum this week, and it was appreciated :)
Very easy to follow videos & interesting to watch, thank you, 🇬🇧from Coventry in U.K 👍.
$5 says he'll have a DRO on it by New years.
Very well done sir. I guess I now know what types of projects I'll be doing if I ever buy a mini lathe. More parts for the lathe.
My lathe really sucks expecially after watching you upgrade yours. Awesome.
Nice work fella.
Wow Great video! 💯
Well made video and ideas
spot on , Great work man !!
Fantastic mate!!
What a great video and ideas! Cheers from Argentina
Thanks for watching!
Your voice is very soothing
Excelente tutorial y muy bien explicado , todo me será de mucha ayuda muchas gracias , un saludo grande amigo ¡!!!!!! 👍
Very nice job 👍
Thanks 👍
Brilliant, thank you
I may not try these mods but I must get a 4 jaw chuck and learn how to anodize. Thanks for the video! Subbed.
great ideas thanks for sharing
It’s fantastic.
Robert, how are you.
I made a puck that took the place of the compound. It’s the weakest part of that machine and is not necessary for most operations. It made my machine much more rigid.
Superb start to finish.. do find the mini lathe just slightly limited size but great ideas
Your videos are perfect and the detailed explanations are on par to TOT and Stefan Gotteswinter. Just awesome!
Nice improvements, plus a lil bling :-)
Well done video I stopped and subscribed just on that fact alone. Great ideas I may add to my lathe. Looking forward to more inspirational videos. Thanks for sharing.
very good thanks!
Moglice is apparently very useful for improving ways, bushings and accuracy
Amazing work..... I have Vevor lathe and the gib setup is awful, exactly like the one in the video. I'll have to make new ones. Thanks for a very informative vid.
Good practical Home machining rather than the precision engineering approach. Most times minute accuracy isn't worth bothering with.
Some of the stuff I've done 'in the field' has surprised me by lasting much longer than expected.
Muy interesante. Gracias.
Very nice. 🙂
I appreciate the imperial approximations of your dimensions. Metric is better, but I don't have an intuitive feel for it. Just one caveat, though - thread pitches are almost never close enough to approximate. Best to leave those captions out.
Thanks for the comment 👍 The pitches (and other sizes) aren't supposed to be direct equivalents, they're just to give someone who isn't metric-familiar a rough idea what they're like.
@@TheRecreationalMachinist I very much appreciate that as well as US Americans doing it the other way around. I'm a metric German and found many US and UK machinist channels well worth watching and always appreciate when they do metric conversions of their imperial units (be it audio or visual). This was a pretty great video overall, I'll have a look at your back catalogue now. :D
Awesome!!!
Great stuff, l just wish I could come up with the ideas let alone do the engineering. 👍
Never trust a man who's eating a banana while staring at you. These are some awesome mods. Thanks for sharing.
Awesome job!
God bless Stay safe
You got me with the banana on the granite block
I've been tempted to make tapered gib strips and tap a couple holes for the tension nuts.
Go for it, one thing that helped a lot on mine was lapping down the tool marks. The surface finish was so rough on the cross slide it was like sliding two dull files across each other. It would skip and jump around, literally makes me feel bad for people in china. After cleaning up the tool marks, surface finish improved a tad, gibs brass, the "stainless steel" one in there had speckled rust on it and had tool marks as deep as a trench. Lol _chinese century_
Excellent video - thanks. I’m going to try some of your ideas. "I switched to the ‘power’ feed [uses hand drill] 😆😆😆." What make/model mill do you use? I want to buy a hobby mill but not spend more than $1300 USD.
The Gibb on my lathe has been milled where the bolts adjust to so that it's held in the centre to keep it pushing straight without kicking.
Really good video, have you listed the bearing and Oring sizes anywhere? I can seem to find it. Cheers from Oz Dave
Some very nice improvements, RM, many thanks. Just for info, as a Brit to Brit, the English pronunciation of "gib" is "jib". I've never heard the US pronunciation in in my employment in British engineering firms.
That's quite intriguing. Being an American, I had no idea there was another pronunciation for "gib". 🤔
I suppose I never questioned it because I'm used to the German pronunciation of "gib" (Deutsch for "give".)
How do you pronounce "jib" then? (Nautical term)
Seems a bit like a recipe for confusion, in such an instance where both words would be used in the same sentence.
Hi could you do a video on all the upgrades you’ve done to your mini lathe (just got one so would really appreciate it)
That was phenomenal. I'm trying to figure out how I can make any kind of carriage and slide for an old turret Hardinge that was the wrong machine for me. Does ANYBODY ever finish one? I'm not expecting commercial quality, but I'd like to make some round things, ya know?
Muy bueno para fabricar herramientas
I have just got my lathe and this is the perfect thing to get mine sorted altho I don’t have a milling machine :(
nice!
Great video. Just curious about your use of the small bearings on the cross slide. My cross slide doesn’t have that recess. Did you machine that in?
How does a Gib Strip work?
I need to make one for my lathe, any tips/warnings?
Hello thanks
The Yugo just got upgraded to a Citreon
Well, it looks like you've got this lathe working like a proper one, unlike mine, which is the same lathe, but works like a toffee apple. They need a serious amount of work to get them to perform properly...
Some excellent ideas young man....
BTW, I'm a retired mechanical fitter, whom I've heard is just a boilermaker with his head bashed in. Thousands of an inch? How about the nearest 1/8th of an inch....?
How do you find all the correct bearings
Brilliant thank you so much for sharing
I noticed you made some mods to the tailstock also do you have any details on how they work ?
The base of the factory tailstock was hopeless. I binned it and replaced it with a piece of cast iron I machined up. I've lost the ability to move it over to cut tapers, but it's such a faff to setup afterwards I avoid doing it anyway. The brass-capped centre clamping screw on each side is through drilled (as I did on the cross slide mod) as an oiling point. It's a long way off perfect but infinitely better than it was.
@@TheRecreationalMachinist ohhhh Isee good thinking i will try do something similar. Many thanks for taking the time out to explain
I'm amazed how much work these cheapie lathes need, fascinating to see.
That's part of the fun of ownership! Once I've got a nice, tight, accurate machine I'll have nothing to make with it! 😂
@@TheRecreationalMachinist Buy an old new bigger one and start all over again using the the tight accurate machine to help you. Lots of fun guaranteed.
May I suggest a steel cover for the Oiler so that it can be easily removed with a magnet.
Exactly what I thought when I saw the brass disc go in.
I was watching the Video, but i have one question. What in the angle you cut on the Brass Gibbs???
where can I find 6700 bearings?thanks
What's the name of the cutter you used to mill the brass gib strip? It's like the opposite of a dovetail cutter.
Great video. Love the small upgrades presented.
That shape they seem to be called inverted dovetail cutters. They're not especially common, it took me ages to find a second hand one that was still useable, but worth the wait it's really handy for breaking corners on things without having to set the work or the machine at an angle. Smaller ones get called chamfer mills, and are more like countersinks. Not quite as useful, but easier to find. Thanks for watching 👍 🇬🇧
what does slide nut design look like nowdays?
Where did you grab one of those mini lathes? The prices seem wildly inconsistent, not to mention import duty..
Damn I wish I had knowledge and experience
Like you, I'm frustrated by the graduation markings on my 7X14. I would love to replace the cross slide graduated ring with one that has 100 divisions (1 div = 0.01mm on the radius) or better 200 divisions so it's direct read for diameter. But after extensive internet search I'm astounded that these don't appear to be available. Am I missing something?
why not make one? after all you have a lathe :))
How you changed the colour to black
Does the gibb need to be parallel to the opposite side for any reason? I'm wondering if the adjuster side would be better square to the adjusters? It might then slide across rather than tilting over
I had the same thought actually. There's very little real estate to accommodate modifications of this type, and at the time I took the path of least resistance to get the machine back up and running. If I ever re-visit the gib (the brass one from the video is still in service and working ok) this is something I'll consider. Thanks for watching 👍 🇬🇧
What size toolbars do you use in your QCTP. I bought an AXA style post and was wondering what size tooling should I get 1/4, 3/8th, or maybe 1/2 inch square for sturdiness?
I'd go 3/8th personally. Depending on your setup, the top of the 1/2" may be above centreline so you'll be grinding away just to get your cutting edge low enough. If you're on a mini lathe you won't have the power or machine rigidity to take heavy enough cuts to need more than the smaller (and less expensive) tooling.
@@TheRecreationalMachinist Thank you for that great info. It helps me greatly.
how about improve for backlash of apron hand wheel ?
That's been on my list since day one. I'll get around to it eventually...
Do you have a source for parts for your mini lathe? Most mini lathes have the 'H' shaped saddle, but my lathe saddle looks like yours.
My first ports of call would be www.arceurotrade.co.uk/Catalogue/Machine-Spares or www.amadeal.co.uk/acatalog/Spares.html Good luck 👍 🇬🇧
How did you adjust the friction on the dial now you have silver soldered up the access hole to the delrin centre ?
The friction is fixed. The drag of the silicon lubricated o-rings against the brass end covers provide the friction. They've not needed any attention since I made the modification. Thanks for watching 👍 🇬🇧