Short project 2 - milling on the Mini Lathe - adapting the toolpost
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- čas přidán 27. 08. 2024
- While working on the next bigger project I was tired of shimming my most used turning tool in a complicated way to bring it's tip on center height.
The Mini Lahtes toolpost is designed to clamp 8x8mm turning tools on center height. My most used beloved insert holder however has a 10x10mm shaft. Until now, I had to shim it on it's backside so that the whole tool is tilted an the tip of the tool comes down on center height. That's not very practical so I decided to mill on of the toolposts slots 2mm deeper, that the 10x10mm turning tool comes right on center. Off course I had to do that on the lathe itself which worked in the end quite well. The 4 jaw chuck probably wasn't the best way to clamp the 16mm carbide endmill. The endmill was sucked out of the chuck during work an I had to reset it.
Next thing on the to-do list might be a propper carriage lock. The provisional locking via the halfnut wasn't ideal either.
- For questions or suggestions, feel free to comment.
Keep in mind, due to very limited resources, I have to improvise a lot and go unconvenient ways which may upset some of the "real machinists" out here.
Hope - with some creativity - in the end come to good resoults anyway.
- Hope you enjoy. Feel free to like and subscribe to the channel. Thank you!
Bearings for the compound slide: • Bearings for the mini ...
Brass nut for the compound: • Brass nut for the comp...
Compound angle adjustment mod: • Mini Lathe compound an...
Instagram: / wecandothatbetter
well it's a lathe czcams.com/users/postUgkxN9zrzkkhnjUF5PQbuA_B1gYdsfCu9k6z but it wasn't what i would have anticipated. Headstock, tailstock, carriage apron are manufactured from aluminum now not cast iron. The spindle diameter for the bearings is too small allowing for a few play in the spindle so I am using some blue Loctite to take out the play.
Very nice, I don't know why I didn't think about this. As a 15 year machinist, I think you have some of the best videos on these little lathes. Thanks.
Thank you so much for your kind comment! I'm humbled, really do appreciate that! :)
FRaXz is 100% on the money with that comment about being the best videos!
Your videos are very interesting and enjoyable to watch. There’s usually a bit of mystery waiting to see why you are doing what. Please keep them coming.
Thanks for your feedback and your kind comment! I really do appreciate that! :)
Always great photography, I know it can't be easy but it's much appreciated.
Thank you for your kind comment! Yes it's often not so easy to fiddle around with camera and the machine and tools.
Excellent video. Of course a quick change tool post would solve the issue BUT that costs money. Much more rewarding to solve the problem with what you already have. I find the standard toolpost more robust than the cheap QCTP I have so I prefer to use it when possible.
Thank you very much! I would like to have a quick change toolpost off course, but at the moment haven't the money for that so I tried to modify the original one to be more usable for me. It's actually not that bad if you haven't a lot of different tool which you need to change often. To have now the possibility to clamp 10x10mm tools is hopefully a good improvement on it.
@@WeCanDoThatBetter Nevertheless I would recommend to buy a Multifix size AA (also named A0) for this lathe. You can clamp tools up to 12 mm height without any modification and it gives a lot of advantages.
@@drucker03 Thanks for your comment! I got a Multifix Aa Toolpost in the meantime :) You find the video about installing it on my channel too. It is so much more pleasant to work with the last with the new toolpost. Makes everything much easier. Really happy with this change.
@@WeCanDoThatBetter I didn't see that yet, because I watch your videos from the oldest to the newest. But it was for sure the right decision to install a Multifix.
Nice idea, good photography. Buy a quick change tool post instead. Solves the height adjustment and works much easier. You will never regret it.
Thanks for your kind feedback! Yes, I come closer and closer to buy one :)
to minimise vibrations on these tiny lathes you can clamp down a chunk of steel in the opposite side of the tool post. in my case i can fit 25mm in the post. I have a cigarette packet block of mild. it makes a big difference.
Oh that's interesting. Thank you!
Some good mods to your lathe. You have inspired me to improve my own lathe!
When I watch a video and think “this is great, must try that” and go to add a comment…but I already commented 12m earlier! :-(
My good Lord why I didn't think about it..
Thank you so much for this great video.
excellent accomplishment. I have the inverse problem, the insert is too low and I have to raise it by 3.1mm.
regarding the milling bit, I recommend to disassemble the spindle and use an MT3 -> er32 shank and you will have much more precision and stability.
Thank you! Raising the tool seems a bit easier, you can shim it with some sheet metall:) And yes, a collet chuck would be great for milling operations on the lathe. Unfortunately I have none at the moment. Perhaps in the future
Good job done, permanent relief 👍
I’d recommend upgrading to a quick change tool post. That way you can dial in each tool head with their individual holders.
Thanks for your comment! I absolutely plan to buy one but couldn't convince myself yet to spend the money :)
Had an old harbor freight lathe and mill sold when moving due to crappy neighbors wish I hadn’t
Excellent work
Thank you! :)
Great video! I would have taken 2mm off the tool holder rather than mill the post. Good job nonetheless.
Thank you! Yes, that was my first idea too. But than I felt bad about milling the good quality Tungaloy insert holder and feeling better with a 2mm thicker tool. The 10x10 tool hopefully are a bit more rigid than the 8x8mm ones.That's why I come up with the idea to mill one slot of the toolholder to fit the 10x10mm tools and therefore are hopefully a bit more flexible with the tools in the future.
@@WeCanDoThatBetter Makes sense!
@@WeCanDoThatBetter The rule of thumb here is to always modify the least expensive part.
@@garygruber1452 That is good to know. In this case the cheapest thing is probabley the tool holder :) I will change to a multifix type soon. So I better keep the 10mm tooling, it should fit great.
notha great vid, more please. How bout a block made when compound slide is off lathe & your using cross-slide only like steve jordan did?
Thank you very much! You mean that solid toolpost-thing? That might be a good idea for the future. When you don't need the compound slide it's surely more rigid with a solid block. At the moment I use the compound quite often :)
Excuse my ignorance, I'm a woodworker with a mini-metal lathe, but what is the tool in the chuck that you use - the one that looks like a drill bit?
I assume that's some sort of milling tool?
Thanks for taking the time to upload your videos.
Regards from Australia.
Hi, thanks for your comment. You mean that tool I install at 1:20? That's a carbide endmill which means a metall milling cutter out of the material carbide. They are used in metalworking to remove material on a milling machine. In my case, I have no milling machine, so I used my mini lathe for milling :) Best regards
Easily fixed, buy a quick change tool post! As they are adjustable in height. They are super cheap and easy to fit.
I definitely want to install one in the near future. Have to look, if someone wants to sponsor me :)
Very good
Thanks
haaa that was the one i needed 🙂i copy your idea thanks a lot
Good luck! ;)
Hello , nice idea , can i ask you is it obligatory to hold it to a 4 jaw chuck or a 3 jaw would do ? I thinking to do some milling on my lathe without buying a collet yet . By the way i ve seen Some bangood collet set reviews and they sometimes have more runnout that a 3 jaw chuck . Also i am thinking of making a vertical milling slide for my lathe with linear bearings cause i have them as a spare and secondly the vertical slides i can find close to me are not good and the good ones will take to much time to ship , whats your opinion ? Are linear bearings good for the job or dovetail slides are better ?
Using a mill in a 3 or 4 jaw chuck can be extremely dangerous i really wouldn't recommend it.
Thank you! I think, the 3 jaw chuck is better than the four jaw for this. It's a lot easier to clamp and the runout should be ok for this. Off course best would be a (good) collet chuck but just try it with the 3 jaw and watch the endmill. In my case the endmill wandered out of the chuck, be aware of that and clamp it tightly.
For the milling slide, I think on manual small machines you go better with dovetail slides. The linear bearings are easy to install but they have no natural drag or resistance. That might result in chattering when not clamped firmly. But if you have the rails, I probably would try it out if its not too time-consuming. Apart from that you can find cheap vertical milling slides on ebay from india for about 60€. Perhaps they work aswell :)
@@WeCanDoThatBetter a trick you can use if you're gonna use a 3 jaw for milling is wrapping a piece of paper around the end mill, it helps to give it a little more friction so it won't slide put as easily
@@WeCanDoThatBetter
Hello , i know ve see them on ebay a month ago and thought a month would be too much to wait xaxa . Maybe a good way to avoid end mill slip would be to turn a cylinder with a set screw that will go to the flat spot on the end mill , i dont know if a bigger thing is easier to slip than a smaller . I know its better with the collet plus my lathe goes up to 4000 rpm that can be used with collet but with the chuck it says up to 2500 . An other idea , even more dangerous and maybe kind of stupid , if we grab a specialy grided tool bit in the 4 eccentrically woudnt that be a kind of a flycutter ?
Взял резцедержку испортил... Державку резца не проще было отфрезеровать?
What size endmill did you use here? 20mm?
16mm
Excellent solution to the problem. Have you considered a quick-change toolpost?
Thank you! Yeah, a quick-change toolpost would be the best, but have no money for that at the moment so I decided to go for the quick fix. But hopefully some day I can change it to a little multifix quick-change toolpost :)
@@WeCanDoThatBetter You have right, is more simple to buy all, but the really fun is to make whatever we need 😂
@@antonio.stefanelli haha :D sometimes, it's fun :D
There are designs for quick-change toolposts that are easy to build. Like the "Norman Patent Toolpost" commonly used on old lathes in the UK.
Hey good lookin , how are ya , when you started to cut with the end mill I thought it was spinning a bit to fast , you know after all this work I now want your lathe , I'll send you the address , it's only a short drive to the Dock here in Brisbane
We can do this better , if we use a collet - chuck 😉
Thanks for your feedback! At that time I didn't have one. Now I own a collet chuck and use it for such a work ;)
شكرا للمعلومه القيمه
Toolpost looks soft sir ... you may know the brand of the endmill sir
Greetings sir .. greetings success together
Hi, the endmill is a "Fraisa 16mm carbide" endmill
Is it Sir, or Madam ?
Just dump the 4-way tool post and buy something like an AXA rip-off. You will need a quick change tool post at some time in your machining career.
Yeah, that would be the best solution. Hopefully some day, I can change it to a multifix-like toolpost :)
Simply use quick change tool set
If I had one...
I tried but my mini lathe has no travel 😂😂😂😂😂
Stick to the conventional tool post more stability.
👍👍👍
Are you a Smoker ?
What? Why do you think?
@@WeCanDoThatBetter Sorry, i replied to the wrong video..
@@65cj55 ok;)
Salve! Una buona idea.... Ma per fresare.. Metti un po di olio da taglio 💪👍
Глупо фрезеровать резцедержатель! Надо фрезеровать резец!!!
4:01 We can do better 🙂
What do you mean? :)
Nuda
Gracias!
La peor idea
Why, tell me what's wrong?