Hi Cornel - In your opinion, what is a good collet set for the home hobbyiest/prototype person? I'd appreciate your opinion.

These are definitely not cheap considering what you get :)

Remember, this video doesn't say anything about other Banggoods product but I sure tells you a lot about Chinese quality control.

People don't realize the size and volume of China's Manufacturing Industry and their capabilities.I buy normally from Banggood and their products are fairly well made in general (for a price). I can recommend another supplier of Chinese Tooling with warehouses based in Europe, with excellent prices, quality level and a variety of ER Chucks, hardly found anywhere else. Their name is CTC Tools (no free shipping but reasonable rates). Also works in their favor, that they specialize in tooling only, as opposed to Banggood that carries a whole alphabet of different items. An even much bigger number of people don't realize that their big name, high quality items sold for astronomic prices, are also made in freaking China. Hahahaha In Canada, the bread we eat is made in China, so what else is new?

@@jorgescordamaglia1654 Exactly, and even more important, people don't seem to realise that other than Taiwan most if not all the manual lathes these days come from China. Apparently there are only 2 factories in all of China who manufacture lathes, but they make a ridiculous amount of them spread out over different batches with each batch being for a different reseller. None of the well known resellers (such as HBM and Optimum in Europe or Harbor Freight in North America) make their own lathes and mills, but instead they negotiate deals with either of those 2 Chinese manufacturers (or one in Taiwan), including the basic requirements they need to meet, like size, engine power, tolerances, paint scheme, and unit price. Some resellers demand better quality lathes, and much stricter quality controll, but in return agree to pay on average a higher per unit price, while some other resellers aren't so picky and just want a cheap lathe or mill but the downside is that because of shoddy quality controll there is a fair risk of buying a shitty lathe or mill. Unless you buy a several decades old 2nd hand lathe or mill, you're pretty much guaranteed to be buying something from either China or otherwise Taiwan, and how much you pay for that machine is a good indicator of the quality you can expect. That's not to say you're guaranteed to receive a piece of cast iron crap if you buy one at a bargain price from one of the budget resellers, just that the chance of buying a shitty one is considerably higher due to the lack of QC. But with the same chance you can end up with a very good lathe for a steal of a price, after all if there's little to no QC they'e also occasionally letting very high quality machines through.

These collets are perfect for our throw away economies

The best second hand rejected garbage money can buy :)

That's a fair question. I've used these before for similar tests so I know the are round and straight.

I doubt you van buy ready made collet chucks for that.

So your saying that switching my drill press to an er32 is not possible from Morse

I believe Banggood is reselling a batch of rejected collets and chucks. So your Aliexpress purchase might be fine. I hope it is because collets with run out are just paperweights :)

Maybe one day I'll get all the fancy tools and do it right. Till then I'll just ballpark it :)

It's just old and has a bit of wear in its tapered bronze bearings.

collet supplier: zhengyu03@sdzhengyu.com

Great movie :)

What was it?

Thanks Emma. You keep watching and you'll single handedly double the female viewer-ship :)

I've been looking on ebay for a collet set, lots of sets quote 0.015mm runout. 0.015 is reasonable and I would be o.k. with that, but you'll probably never know what you'll get.

Hard to measure, but I would say about 2cm, and that is more than long enough. Some one once told me that the first 3 winding take more than 90% of the load.

@@Rolingmetal Much appreciated!

That's the spirit :) I've already asked Banggood if I can test out one of those small air grinders they sell.

You're welcome. I would also stay away from their flange mounted collet chucks. kzfaq.info/get/bejne/d6qXaNBerpPOj5s.html

Goedkoop is duurkoop, we say over here. With the old VFD the sound was even worse :) kzfaq.info/get/bejne/nbJhept1sczeen0.html

Instead of claiming warranty and risk getting the same crap I might ask for an air pencil die grinder and try to re-grind the chuck.

Jay Nobody I like that idea. A CNMA-431 @ 175sfm/.003rev

Yes grinding would be even better.

How were you able to accurately determine this problem?

We should collects all these worthless collects, track down the manufacturer, and charter a B52 to bomb the factory with their own shit. But they will probably sell them right back at us.

I might try regrinding the 16 degree taper on the MT3 collet chuck but regrinding the collet nut will be a hard thing to do. I don't think the collet nut came from the same factory It looks to well machined for that. So hopefully regrinding the nut won't be needed.

I know my old spindle is not the best and you right the internal taper might be a bit of. But not by much. I think the clip of my old collet chuck proofed that.

Yes, but any error in the spindle is magnified in the tooling you use, more the longer away from the spindle you come, I would start with getting the spindle running dead true, just a suggestion.

Agreed. But getting the spindle dead true is beyond my capabilities. I would involve lots of scraping and specialised measuring equipment. For now I will just try to work around the limitations of my lathe. Also, these collet chucks were closer to the spindle nose than any work piece in my 3 jaw. But it might be a good idea to ream out the internal spindle taper. Although a good reamer will cost more than what I paid for the lathe :)

A reamer can only remove high spots (it will always follow the taper) if you have to correct a taper running out you have to grind it or turn it to correct misalignment. One thing you could do is to put som speedmarker on your mt3-mt2 converter and put it in to your spindle and turn it 45 degrees and see if you have some high spots in your spindle taper, if there is some it should be relative easy to grind them down, it also seems to me that when you put the mt3-mt2 converter in your spindle you was able to drive it in a greater distance that I would have thought, that could be an indication that you have some high spots in your spindel. One problem with correcting tapers is that you only have to take of a small amount befor the taper gets to "big" and your tool may not have the length for you to get it all the way in to your taper, if you know what I mean

To be honest I don't know. They are grounded pieced of HSS and those are normally pretty decent.

Ground stuff? I think it should be good!

Good to know you successfully fixed up your collet set. It makes me hopeful for a similar result :)

It does look like that. I think the test pieces er not only off centre but also angled inside the collet.

They also seem to sell mostly Chinese imported stuff. But there must be good collets coming from China.

Welcome in my little online tool temple. I'll upload my next sermon for your viewing pleasure whenever I feel like it :) I think I found the same set of collets online. They look very similar although the packaging is a bit different. But the website doesn't mention any collet specification. www.hbm-machines.com/producten/gereedschap-en-toebehoren/spantangen-en-spantanghouders/hbm-spantangen-en-spantanghouders/hbm-mc-spantangensets

You're right, I really should get myself a test indicate. I actually need one if I want to try and regrind the collet chuck.

I have three dial indicators and never use them. A test indicator is much more useful, eliminates cosine error, and if used with a small mount is much less intrusive. Once you get one you won't use that dial clock again. Rob .

Collet supplier: zhengyu03@sdzhengyu.com

MT collets will go directly into a MT lathe spindle. For ER collets you need a collet chuck. MT stands for Morse Taper and ER is something pirates used to say.

thank you AM NEW AT this thing i like to learn that way i asking i just see tubes and trying to learn the mt collets or the the er has thread inside its the same thread on all colllets or depending on the mill spindle and the drow bar ?

All MT collets and ER collet chucks I've seen had thread in the. But the thread isn't the same for all. There are imperial and metric threads. The size of the thread also changes with the collet chuck size.

thank you its very useful

To expand on the concept: Do NOT use MT collets. MT tapers are locking tapers and are meant to hold tool holders, they are not meant to hold collets. You can damage your taper using them. ER and C series collets use a self-releasing taper, R series collets use a semi-locking taper. ER collets are meant for tool holding, and the tool must be fully engaged or you can ruin the collet (this is what he shows in the beginning). ER collets have a large compression range, and are accurate over that range. C series collets are meant for work holding, you can hold right at the end of the collet, but they have a more limited compression range. C collets are also available in square, hex, expanding, etc. If you got stuck with a mill with an MT taper, you should invest in a ER system, and not swap out the MT taper unless really needed. The MT taper will wear out rapidly in a mill, they are really only suited for lathes and drills. If you are considering using collets for work holding, get the C series - they are just far better for this. If you are shopping for a mill, I suggest you consider anything with an MT taper to be a deal breaker - they are just stupid for mills. I have no idea why Europeans get shafted with them so much. R8 is the right taper for a mill.

Nick Blacklock yeah i can see that

I had the same experience with multiple Chinese sets too, they are all useless and waste of money.

They are about 45.15 mm long and 24mm wide. That's close to TG75 but not close enough. Thanks for making me aware of the existence of TG collets :)

You should look into those collets in round transparent containers on aliexpress. When I have earned enough money with my Banggood affiliate sales I'll probably buy some of those.

HBM sells Vertex for 15 euro a piece. To bad they are ER40 and not ER32.

no doubt there are more places to buy them

its just a dutch potato farmer with a short fuse..

I'm hoping not all their collets are this bad. But they might be if they all come from the same factory.

You can fix it by grounding and lapping them on your lathe. They are good, but need some finishing.

yea, but the collets themselves are the ones that Im seeing are junk, cant really grind and lap those. He was using one of his good collet chucks to test the runout of the collets themselves.

Buy quality collets and chucks from name brand manufacturers and for the most part you won't have to worry. Buying Chinese tools is like gambling and playing the lottery, except sometimes you actually win when buying lottery tickets or gambling.

Sure, if you have the funds. Don't know any name cause I don't have the funds :)

Not much actually. My contact actually apologized for the bad quality. And told me that one bad review doesn't have much of an impact. But he wouldn't mind a shorter less thorough video when something is this bad :) Then he asked me if there was anything else I wanted to try out. I also left 2 negative reviews, including pictures, on their website. These are still being processed..... A couple days later, a few very positive reviews have shown up.... I don know what to think of this. It could be just coincidence or proof that I got a bad apple. In the future I hope to make enough Banggood commission so I can just buy the stuff I need and want to review. This way I can operate completely independent from Banggoods generosity and also review stuff from other sites. I think I make honest reviews but I can't help feeling a bit beholden to Banggood and that might hold me back a little. We'll see what happens, I could just loose interest in this KZfaq/machining/reviewing stuff :)

I have a lot of thing in my wishing list of Banggood, and lot of this precision collets. After this video and behavior of Banggood, NO WAY to buy this thing from them NO WAY. Thanks once again to opening our eyes.

Someone suggested ctctools.biz (to me, it looks like the same stuff Banggood is selling) I'll probably buy a precision er25 set from them when I've earned enough commission points. Depends on their shipping costs. I'm also getting another Banggood collet set to review. Hopefully that won't be another disappointment. But looking at myfordboys review Banggood must be selling some good collets. Goodluck finding a good and cheap collet set.

@@11Aldebaran11 collet manufacture :zhengyu03@sdzhengyu.com

I noticed that Banggood does advertise the accuracy for some of the collet set. Apparently the set below has 0.015mm runout. www.banggood.com/16pcs-ER25-1mm-to-16mm-Chuck-Collet-Spring-Collet-Set-For-CNC-Milling-Lathe-Tool-p-1062954.html?rmmds=search&cur_warehouse=CN

I guess im randomly asking but does anybody know a way to log back into an Instagram account?? I was dumb lost my account password. I would appreciate any assistance you can give me.

@Jamie Tristan instablaster ;)

@Rohan Wallace Thanks for your reply. I got to the site through google and im trying it out atm. Looks like it's gonna take quite some time so I will get back to you later when my account password hopefully is recovered.

@Rohan Wallace it worked and I now got access to my account again. Im so happy:D Thanks so much, you really help me out :D

Me too, Lee. It was a pretty shocking video. I had no idea stuff could be that bad.

I'll give fixing a go. I got them for free so I'm not going to bother getting a replacement set. After seeing Ray Caniglia's video about basically the same set I think a replacement set will be just as bad.

There must be good low priced ones out there, but how do find those.....

Please let us know the results. And could you post a link to the collets you bought? I'm still in the market for a cheap collet set. I'm considering buying a set from ctctools.

@@Rolingmetal Do you still need collet ? I can offer. My Email: zhengyu03@sdzhengyu.com

This sure was a big disappointment. But you're right, there is good stuff coming from China.

Thank you. I left a negative review on the product page with a link to my video. I expect they will contact me at some point this week.

Sorry about that :) At higher speeds it becomes perfectly acceptable, especially since I got my new VFD. The old VFD would have blown your head of clean! kzfaq.info/get/bejne/nbJhept1sczeen0.html

Rolingmetal haha it's alright great videos otherwise

Unless your a dog lol

Thank, I try to be honest :) But I'm a bit conflicted about doing reviews. On one side I'm certainly not an expert, but I'm also no brown noser and certainly not a stupid fanboy of anything. And I do believe the world needs to scale back it's economic activities if the human race want to survive. So all I can do is give my honest opinion. But I can be wrong or change my mind over time. Sure you get something for free but it not the same as being paid for your time. A minute of video takes at-least an hour to produce, and that only seems to get longer as you get older :)

@@Rolingmetal sure, but if you’re given a welder that’s worth $1,000 or more, or a metal cutting saw that’s worth $600, or a number of different tools as some guys have been given, they outfit their shop with them, and don’t have to buy them. Or later on, after the agreement they signed is over, they sell them. Income, yup! I don’t mind it so much, except that many guys don’t say that they’ve been given these tools, which is deceptive. KZfaq requires that any You Tuber receiving something for free, or at a special discount not normally given I is required to say so. But most just say that the “just got” the tool. That’s really what I object to. Most people do to understand just how many people are given things to “review”, and even sign a contract about what they’re allowed to say. Everlast welders does that. Very annoying.

I was given a EDM machine, a rather expensive piece of kit I had zero experience with. And I was rather surprised they picked my little channel to do a review. But I only wanted to do it if I had total freedom for what I was going to do in the video. They excepted, and I was surprised it actually showed up :) I still have it, and have no really need for it and should sell it. But selling a gift is not done. I should fire it up again next summer, see if it still work :) Free stuff can be a good source of cheap and rather easy to make videos.

You can re-grind the collet chuck internal taper with a pencil die grinder fairly easily to true it up (for a given position of the Morse taper). Same method as making a collet chuck from scratch. The collets are not fixable. Rob

I think I'll ask for one of those small die air die grinders you've been raving about, Rob :)

Can't go wrong there (hopefully) as they all seem to be the same as one I bought about 10 years ago. Kit looks identical. You will get some runout with the discs they use, but at 50K RPM it won't matter. Super handy little tool. Rob

Hi Rob. Thank you. I liked the rebuild you did on the flame licker engine. All my best. Bobby

xynudu f

Thank for that. I didn't know there were MT collet chucks with tangs/lips. Perfect for the tailstock no need to make add an eject stub.

I think the collet nut might have come from another manufacturer. The machining and finishing is certainly a step up compared to the collet chuck. Maybe all collet manufacturers get their collet nuts from the same place. That would explain your situation. But you're right that hole feels a bit tight for most collets. One collet hardly didn't fit at all.