Vevor Mini Lathe MX 400 Part 14 -Top Slide Gib Issue and Support Review
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- Опубліковано 23 сер 2022
- The top slide gib doesn't seat properly against the dovetail face. This is an overview of the issue and a review of my support experience with the vendor who sold the Vevor MX 400 Mini Lathe - Boboran
Warning Amateur video and dialog is not great but hopefully this content helps some of you out there looking to get into Hobby Machining. Go easy on me in the comments.
File flats on the back of the gib to line up with the screws. File the flats so that they’re perpendicular to the axis of the gib screws. File in the minimum amount.
I think this could work, I may try to drill dimples on the back side of it in the future but for now I like this idea. Thanks for the idea.
at least your gibs are dovetailed, mine are flat!
this may help.
1) get some fine lapping compound and lap the gibs (not the side of the adjusting screw). and lap the opposite side/dovetails too.
2) mill out the dimples by slotting them with an end mill. use an end mill smaller than the dimples.
3) adding 2 more adjusting screws.
4) make or buy brass gibs. /lap them.
I don’t have a mill yet but I like the lapping compound idea. I’d like to remake the gibs when I get a milling machine.
@@deezworkshop. my lathe is older than yours. a BD920. my compound gib rides at the very top of the dovetail on the Swivel Base. the mark on the gib where it touched the Swivel Base is only about 2mm wide. that is all of the gid that touches the swivel's dovetail. not much at all.. the compound has never been smooth to adjust. I lapped the opposite side 2 days ago and the lapped the gib side yesterday. I don't think it's going to help the gib much. I have got to get some brass and make my own Gib. I have a small mill/drill. it cut pretty good.
I just wish i still had mine g0602 manual. I got frustrated with backlash and turn it into CNC but now DRO is so cheap I would put it and be happy. If I get such a lathe thats what I would do. They have now magnetic scales that are so small it may fit even on such small lathe.
Is this the manual you were wanting. Hope this helps.
cdn0.grizzly.com/manuals/g0602_m.pdf
I have one of these sitting on the floor in my garage. The Vevor MX-210V. It is the 8x16 Luxury Version sold under the brand Mophorn. I was surprised to see the compound is two extrusions made of a non magnetic material. No machining, just cut off pieces of extrusion. Not at all like the compound shown in the Amazon listing. I tried facing and turning a piece of Aluminum stock. It was so rough it looked like it had been threaded. It is impossible to make a smooth cut. I checked the spindle. I am able to manually rock the spindle back and forth with my hands. The play measures about 0.080 inch or 2 mm by dial indicator. Spindle play should be on the order of 0.0001 inch. I have not bothered trying to fix it. Could be the bearings need tightening or it could be the bearing bores are too big. They don't seem to measure anything or even use drilling jigs to put holes in the right place. It seems to be made by eye. I went back and forth with Christina for a week. They asked for videos. I sent videos but their email will not allow videos. They offered me a partial refund so I could get it fixed locally. They offered to send another one. It seemed like Christina and me were talking past each other. So I handed it over to Amazon A to Z. They gave me my full refund and kindly told me there is no need to return it. And thanks for doing these reviews.
I am really glad you shared your experience on here. I really do believe Best Equip, Mophorn, Vevor, Etc on Amazon are one in the same seller. just slightly different packaging, Sorry for your troubles but what you experienced is exactly why I chose to use Amazon to make the purchase. If I had the issues you did I would have done exactly what you did. I think I got an older model, I dont have the safety lathe chuck key, The safety shield doesn't work at all, Works whether its up or down. None of these issues stop me from using it however. Sharing your experience here will hopefully help others decisions who are considering making one of these purchases. That was my goal for starting these videos and sharing this series. I appreciate you watching.
That tailstock looks nice. How square is saddle to spindle? Did you do measurements? I was considering to get longer model but I see many have problems. I see some sell cheaper some more expensive and I am not sure why. Are some better tolerances? They look the same.
Sounds like you are in the same situation I was when trying to decide what to get, In the end the spindle Bore was the primary reason I went with this specific model. I really didn't need anything with longer length with that size spindle bore. In upcoming videos you will see some continued struggles with the Tailstock. It just has a lot of play in it. It is extremely difficult to get alligned and when you think you have it, poof it just goes off center. I am still working with it but I believe the combination of the aluminum tailstock, and my cheap drill chuck and live centers simply have too much play in them. For my uses I accept this and it will be ok. Someday I will upgrade things but for now that's the point for me. See what I can do and how I can make it better with little to no more money. I didn't measure the actual bed but things do move smoothly and done bind up. Cant stress this enough. IF you buy one of these (any vendor of the Chinese made cheap lathes) don't have high expectations and don't buy this if you cannot afford to lose the money, see others comments here and other videos. Its a risk buying one of these in my opinion.
They are pretty much all made in the same factory in China. Some of the brand names like Grizzly or Little Machine Shop cull out the real junk before they sell them. I printed out the Grizzly manual for my ChiCom lathe as it is much better written and has a lot more detail than the xeroxed "manual" that came with the machine. The tailstock in Deez video and the one on mine are aluminum.
@@deezworkshop at least you know what to do. I was such a noob i knew nothing how to fix. Now there is much more info outhere. I might bite it and make it a project for me to try to fix imperfections.
Good luck, I took a chance and it worked out for me. I am having a blast learning and turning with this little lathe. I am just glad its working as good as it is. But again I went back and forth for over 2 months and finally accepted the risk and took the plunge.
I note that there is a tremendous amount of space between the stationary and moving parts of the compound. This space should be minimal, maybe a 32nd of an inch. I would say first, machine the compound slide to reduce that space, second stone the side of the gib with the dimples then turn the gib, side for side, and dimple that side to properly align with the gib screws.
Thanks Dennis, You have a keen eye. You are absolutely correct. I have an upcoming video showing and trying these suggestions. There are more issues than machining down the shoulders of the top slide. If you're still watching my videos I am looking forward to what you think of that upcoming Gib issue video and the problems I tried to show in detail.
Is the misalignment of the indentations in the gib from an installation of the gib strip upside down? If you flip it do the holes line up?
I thought of that. Good thinking but if I turn it upside down the angles are off. No it’s purely a sloppy job and original machining from the manufacturer. The actual problem is the shoulders are not machined properly. I need about 70 thou machined off the shoulders of the top slide.
I can tell you how to fix this. Go rent or buy a Magnet Drill or a Slugger Drill which is the best magnetized drill, set it up on your baseplate then re-surface/mill it to match the base.
This could work but with my current skillset id surely make it worse. 🙂 Perhaps someday when I get better.
Had many communications with "Christina". They are supposed to replace at least the cross slide as it is cracked. Fingers crossed that the part(s)? come. On the one hand your compound does appear to be cast iron. Mine is aluminum. I wish I could post photos in a reply but the gap between the top of your compound and the bottom half is horrendous! Looks like it is around 1/8". If should be .005 or .010 thousands. That is why your gib is cocked. There is simply way to much gap between the compound parts. What I did on mine was flip the gib over and redrill the holes in the proper place. Don't try this unless you have a good drill press or mill or you will most likely ruin the threads.
Yep, Good ole' "Christina. Through Amazon, I actually communicated with Vevor, Boboron and Best Equip, All had a "Christina" reply. My compound is cast iron and not aluminum but the tail stock is aluminum. I will check that now. The gib is drilled wrong and its on my list to correct. I will take it out and see how I can improve this gap. thanks for picking up on that. Send an email to my deezworkshop75@gmail.com if you want to share a photo. I have no problems sharing what I have if it will help someone. That's the point of this channel. To help and inform others. Good luck and I hope you get your parts. I did actually get a partial refund for my gib issue and I was happy with it all things considered. So they did reply to me at least...I wasn't expecting much but I want to be honest with my experience.
you could buy a new compound ? maybe re drill the gib adjusting screws to a new lower location and off set ?
At the time those thoughts crossed my mind. there were a lot of ideas suggested and in the comments of these videos. Replace the compound, Flip the gib and redrill, redrill new holes on the top slide mount and line up new dimples on the gib. In the end a new gib was machined from a gracious subscriber which turned out to be an excellent workaround. If you keep watching I show that in later videos.
@@deezworkshop wish I was better set up to record what I went through. It all helps even seeing what non machinist like me go through these issues.
I came across a smithy 1220 for very short money a few months ago and I dont think it was ever properly set up or maintained. PO was getting rid of it cause it sucked. Every thing that should be tight was loose and everything that should move freely did not. I have improved it leaps and bounds just by cleaning and tightening and adjusting
I enjoy creating and sharing these videos and my experience but it certainly doubles the amount of time to accomplish any project or task just to setup and record the content. 2 unexpected outcomes have came about. 1, I have met some great people in this machining community, 2, It keeps me motivated to get in the shop and make the next project. Thanks for watching. it is very much appreciated.
@@deezworkshop I started to try and video what I do. Mostly the videos are to share with personal friends to clarify subjects. At some point my phone stopped recording in “movie” mode and I grew frustrated with the vertical view. I have not even began to look into editing.
ua-cam.com/users/shortsJ-MIATCVadI?feature=share
It can be a challenge to video and remember your angles, start and stop when you need to, narrate, the whole editing thing is a big learning curve. Lot to it. Even if you dont edit youtube is great for what you said, sharing videos with people you know for advice and fun.
i spent close to $1000 for the grizzly version of this casting and have all of the same issues.
IF you keep watching I did come up with a solution. Well i had a subscriber who made me a new GIB. It sorted out the issues i was having and has me running quite well. If you have the means or access to have a new gib machines to fit the entire slot it will really strengthen the top slide. It is dissapointing for newcomers like myself to have those kinds of issues. I dont have a mill and couldnt ahve made a new one to accomodate the flaws. Good luck and I hope your getting your grizzly setup and working through the issues.
Same lathe.... same issue! It really hurts rigidity!
Sure does, I have improved it over the past year and a half but there are certainly limits to these small machines. Still having a lot of fun with it.
@@deezworkshop I am a bit disappointed because even with the fix I gave it, the gib is still a mess, it lifts the top side of the saddle on one edge and I get about 0.10mm of fiddle with my gauges... :( Luckily I have a mill arriving next or in the other week I hope I'll sort out the issue, most likely I'll make an enterely new saddle..! But I'm glad you're having fun with it, in general the build is ok imho...
Anyway, once I put steel on the chuck... it's game over..! I'll sort it out!!!!
@@RiderRickMaker these machines are definitely not great quality. I have a lot of similar issues, I hope you get yours sorted. These things are so much more affordable than the ones we know will be quality, I was looking at PM Lathes yesterday, pushing 4k with a dro, You can get these cheap machines for less than 1k. But i suppose the argument can be made....whats the point of saving money if the machine problems prevents you from using it. Now that I know I enjoy this hobby, when/if I get another lathe it will certainly be from a better known quality source. I love this Precision Matthews Milling machine I purchased last fall. No comparison in build quality.
Good luck, I am sure you will sort it out.@@RiderRickMaker
Orderd a mill, ordered dovetail cutters... hell yeah, for sure I'll be able to fix this! :) I really want to start creating jet turbines and the lathe is crucial for the shafts and some other elements..! Thanks@@deezworkshop !!!
Its GIB not jib.
right
I'm having the same problem with cristina. They want videos. But there website won't let me upload to their account. I'm so frustrated. Just back and forth. No satisfaction. Baaa.
Personally I believe all of these sold on Amazon are sold by the same outfit. My experience with Christina from support was within the 30 day return window so maybe that had something to do with them responding. "She" did at one point try to get me to start replying to her gmail account to share photos and videos. I said I am not going to do that as there won't be a trail in messages that I can take to Amazon if I run into issues with you. You can submit photos just fine in the Amazon support messaging system. It's a sketchy outfit for sure. I've said it before, Worth repeating, Do not purchase one of these cheap Chinese mini lathes from any manufacture if you don't have the expendable cash. Certainly don't borrow money to buy one. I took a chance accepting the risk. Good luck Larry, Thanks for watching and thanks for sharing.
It's an affordable chinese lathe. Had it not been for the lesser quality details we would never been able to afford this hobby. -Schaublin lathes on the other hand, (Swiss made) don't suffer from "dragged-behind-a-car" style of gibs, but they cost both arms and both legs.
Brass stock and a mill, or a file plus some scraping and lapping will produce nice gibs.
This is a very good perspective and way to look at this. I would have never started this hobby if it weren't for these affordable lathes. At times frustrating but the challenge of making things better is part of the fun and process for me. Thanks for the comment and thanks for watching
@@deezworkshop I bought a chinese minilathe of the heavier and larger variety here in Norway.
The basics are OK and works fine;- the ways, spindle, chuck etc.
But the gibs are just as terrible as on your lathe. They must have been machined with a lawn mower
These guys know how to make a proper gib, but if they were to go down the Schaublin path, the poor soul that machines, scrapes and lapps the gibs would still sweat over a gib when the other workers were finsished machining all the other parts.
The first thing I did were making new T-bolts for the compund since the original bolts snapped when trying to tighten down the compund slide.
Then I drilled two more holes and added two more T-bolts.
Then I tossed out the flimsy sheet metal stand and bolted the lathe to a heavy wooden bench almost as heavy as the lathe itself. -And that transformed the lathe enormously.
Then I got rid of the compound all together and made a solid toolpost.
Next up is making a new gib for the cross slide, preferably a tapered gib but anything will be better than the one that came with the lathe.
-As you say, this is a hobby, and modifying a cheap lathe is part of the fun.
@@eriktorp-olsen1706 "They must have been machined with a lawn mower" 🙂 Yeah, this lathe is no more than what i expected and I am just glad I'm able to turn materials with it. The tailstock has been a challenge and continues to be, I believe a lot of my problems are from using a cheap live center, cheap Drill Chuck, and it being aluminum all factor in. I will continue to try to get it dialed in. Sorry to all those skilled machinists watching for all my cringe worthy moments. I am still learning but having fun doing it.
@@deezworkshop Aluminium tailstock . . . hmmm . . .
Maybe it's good enough, I don't know. My solid toolpost is aluminium,-made from old engine parts melted down behind my shed and it seems to do well.
After all, they make engine blocks from the stuff.
-But nothing beats cast iron which refuses to compress or flex under load.
@@deezworkshop Flimsy tailstock . . . go check out *Finno Ugric Machining* who also struggled with the tailstock on his chinese lathe and he did something about it.
This guy is from Finland and they have a nasty habit of pronouncing words exactly as they are written . . . they do that in the Finnish language so english in particular is a challenge for them, but this guy speaks english fairly decent.
ua-cam.com/video/bL8bLrd2DBo/v-deo.html
artisan makes :yt channel,, also We Can Do That Better channel.
Seen artisan makes. Great channel. I’ll check out we can do that better. Thanks
I had more problems than you, the one I bought was supposed to be totally up graded, with tapered bearings, motor etc, it came with 400 watt motor not 550 watt, standard bearings not tapered, the head stock was drilled wrong, nothing was straight, tale post was so sloppy, I had the same issue with costumer service.
Sorry to hear that. Thanks for sharing your experience, That's the point of this video series. Mine is not without its problems but it is functional, I wouldn't be able to make super precision parts but it is good enough for me to learn on. Hopefully you get some response.
Wtf is a "jib", don't tell me you say "Mel Jibson" too
Seems it's ok to pronounce it both ways, but since I am not in the UK I will start using the hard G to pronounce Gib moving forward.
www.practicalmachinist.com/forum/threads/gibb-or-gib-correct-pronunciation.157616/