IMPROVE MINI LATHE PRECISION using ER 32 Collet Chuck on a 7x10 Harbor Freight Mini Lathe 7x12 7x14
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- Опубліковано 12 вер 2024
- Here's an easy trick to improving the precision of your mini lathe using an ER32 collet chuck like this one that I got from Amazon amzn.to/2E24tjw
- ER32 collet chuck for 80mm back plate - amzn.to/2E24tjw
- Techniks ER32 Collet Set - amzn.to/39eLRrX
- Hex ER-32 Collet Block for using in 3 jaw chuck - amzn.to/32BrnZh
- 7x12 Mini Lathe - amzn.to/30vLxB3
The ER32 Collet Chuck has really improved the quality of parts made on the HF 7x10 mini-lathe. It also doesn't damage the surface finish of the parts. This can also be used on other size mini-lathes that use an 80mm backplate. There are also other size options to fit different lathes.
The Techniks ER32 collets are very high quality. They are made in Taiwan, and cost a bit more, but are much better than the Chinese collets. Link here: amzn.to/39eLRrX
If you want to use an ER32 collet chuck in a standard 3 jaw chuck or in a vise, then this collet block is a great tool to use for that purpose. amzn.to/32BrnZh
There are also 4 sided collet blocks available.
The products shown here were purchased by me with the intent to use. I am not being paid or compensated for this review. The video and description may contain affiliate links. If you click on a link, I may receive a commission. Money earned helps to support my channel and bring you more informative videos about engineering, crafting and DIY.
One of the first things I would make is something to, say, go in the tailback drill chuck that reaches toward the head with an end that will hold the collet chuck or reg 3 J chuck in place so you can use both hands to do the screws n nuts and tightening them down !
Good idea. We have also since replaced the screws with set screws, which makes it a lot easier to change.
My Dude... The _lathe is *ON*!!_
I bumped the knob just indicating on mine. Identical model. Almost took a finger off and threw the indicator across the shop! Please make sure it's _at least_ turned off when you modify the bitey-bits!
Thanks, good point. Will be more careful about that. Their system of having to turn the knob to off and start at 0 rpm creates a false sense of security.
@@engineerable Yeah, I just brushed it with the back of my hand and it was enough to launch the magnetic stand and indicator across the room. Fortunately, I wasn't injured and the indicator was a Harbor Freight, so easily replaceable. Scared the shit out of me, TBH. I've gotten in the habit, since, of pinky-fingering the switch as part of the process.
P.S. Thanks for the video. I didn't realize there was a slot-in solution for the collet chuck. Found one on Amazon and some collets and matching collet blocks, both square and hex, for < $150, so thanks for that as well!
I've caught myself doing this a few times as well. Just as he mentioned about the speed control going to zero, it's made me forget a few times that the machine was still on, putting myself at risk while performing certain tasks. Turning the machine completely off is a good habit to get into, even if it's only for brief moments, and inconvenient.
HEY!!!! BE SAFE!!!!
Lathe Safety Law #1: Your hand belongs on that chuck key when it's in the chuck, NO EXCEPTIONS!
I've seen people get fired on the spot for it, and for good reason. Forgive me, friend, as I don't mean to come off ugly, but you KNOW that's a lethal projectile if [for whatever unlikely reason in a chaotic universe] the lathe powers up with the key IN.
Good information in the video.
Live well, be well...
Thanks 🙏
Maybe a tip, if you put the setscrews in backwards, with the hex side towards the tail, you can turn them all in side the chuck holder. put e nut at the back of the spindle plate and screw the nut in with an hex wrench and you just have to hold the nut flat at the back of the spindle plate, until it grabs the thread. or with a m6 bolt starting from the front.
Looks easier to me, I don't have a lathe yet, it is ordered, so I do not have the experience myself yet. maybe next weekend Kind regards Hans
I was too quick with my tip as I saw a few seconds later . anyway nice video.
Thanks for the tip. We later bought set screws of proper length to make it easier to install as you're suggesting.
instablaster
holy moly this dude has a third arm.
I also would have put a dial indicator on the lathe flange before fitting the chuck .
Hey ... If you take a look in the back end the weight of the material is making it hang down in the back ..so if you use something to center it on the back end it won't be out as bad as it looks ..just my thoughts .. thanks for the video ...
Thanks for the tip. We do that when the material is long enough to reach the back of the spindle bore.
Will this also increase the diameter of rod I can put into the lathe throat? (need to put a 3/8 all thread through it) I am really sad how small the mouth is on the standard 3 jaw chuck compared to the 1 inch size throat the lathe has waiting trapped behind the jaws.
3/8 all thread will definitely pass through. my immediate use was for 16mm titanium. With the ER32 collets, you are limited to the collet ID clamping range 1-21 mm (0.039-0.827"). ER40 collet chuck will allow you to clamp 3-26 mm (0.188-1.024")
@@engineerable Thank you, I am amazed this little guy will cut titanium. I purchased one a 10 years ago for my Halloween on line prop business, it stop working but I was in the middle of my busy season so I got another on from HF and put the old one in the trash... DAM I wish I had not done that as I threw away s fortune in spare parts....
I would have taken it out of your trash and fixed it LOL! These things are like $700 now! It cuts titanium fine using carbide tooling and small depth of cut. The CNC conversion improves the overall cut quality by a lot vs by hand. And then it's no problem to take a lot of small cuts.
it takes two of you to pt tat chuck on?
How many idiots does it take to put on a chuck? Two, one to screw it on, and the other to video it and tell them how they are doing it wrong.
I noticed that you have a quick change tool post on the mini lathe. What size will the mini lathe take in tool posts ? Thanks!
Since my mini lathe was converted to CNC, I was able to remove the cross slide since I did not need it. That allowed me to fit an AXA size tool post. Take a look at MULTIFIX style tool posts. Their smallest size is AA, and should fit the mini lathe with cross slide.
@@engineerable QUOTE Since my mini lathe was converted to CNC, UNQUOTE now I have to ask: what is done (how) to convert a mini lathe to CNC operation. Thanks!!
@@ulisscarple Long story short is that you replace the X axis handwheel with stepper motors, add a lead screw with stepper motor to the Z axis. There are kits available to help you do the conversion. This one looks simpler than what I made and uses the original rack for the Z axis. www.ebay.com/itm/7-x-10-7-x-12-7-x14-mini-lathe-cnc-kit-/255233679007
@@engineerable much thanks
@@ulisscarple Also, I strongly recommend using a Centroid Acorn controller. Inexpensive, professional controller and software.
You need to check runout on the collet Chuck taper before worrying about anything else. If that’s not true you’re wasting your time.
Thanks for the tip. We did check the collet chuck taper runout, just not in the video. Ultimately, the run out was much less using the ER Chuck than 3 jaw chuck, and repeatable. The main reason for us to use the ER collet was to prevent damage to the parts surface.
Nut has concentric step, not eccentric.
Take a closer look. The nut hole which the collect snaps into is eccentric.
You need to sort your editing out on this video I just watched you put the collet chuck on twice, quite poorly I might add too.
Wow, good point. I blame editing on the phone while wrangling kids, you should try it. The difficulty with the install was using the original screws. We've since bought new set screws that make the installation much easier and faster. Will have to make an updated video about that.
You should re-edit this. You duplicated several scenes. Otherwise, informative.
Thanks, I was able to trim out the duplicate scenes.