How parallel does it cut?

After restoring this Celtic 14 lathe, I would like to know if it cuts cylinders or tapers. Let's do the test.

[howder]

Nice work Michel, a home lathe that is only a file or abrasive away from spot on is where we want to be. Enjoyed the visit, take care and cheers!

[EnglishHobbyMachinist]

What I like about your channel is: you never know what is coming and it never disappoints! Thank You 👍

[andrewdolinskiatcarpathian]

Hi Michel. You did the tests we are all guilty of not doing ourselves. Gosh, I wonder what my own results would be. Thank you for the interesting episode. 👏👏👍😀

[StuartsShed]

Very excellent. Love the thought process - enjoyed watching you run that lovely lathe.

[RalfyCustoms]

Happy days Michel 🎉 seems bob on to me buddy, there's always a little learning, how to get the best out of your equipment, thanks for sharing, best wishes to you and yours Ralfy

[davidberlanny]

Hi Michel, an interesting exercise and very well reasoned. Its a very solid lathe.

Have a great weekend!!

[nobbysworkshop]

A very well thought out test. I don’t think you could complain at the end result. You must be happy Michel. Thanks for sharing. Cheers Nobby

[traktor]

Very fine notes. Once again, I learned a lot. A very useful and sympathetic performance!

[RustyInventions-wzir]

Very interesting. I have not really thought about it in depth like you, but think I might have the same problem on my lathe. Up to now it didn’t give me trouble.
Thanks. Brilliant video.

[argee]

Thank you for taking the time to share your experiences with use. I'm always glad to see what you are up to. BTW, would you consider giving us a brief tour of your shop sometime? I'd really like to see a closeup of your grinding center. Thanks again. Randall in Kentucky USA.

[eyuptony]

Well tested Rustinox. As long as you can work with the accuracy it provides it's a winner for a freebee. Cheers Tony

[Patroand]

I had the same problem with my Harrison L6-12. After checking the ways, the perpendicularity of the chuck and the jaws, I finally removed the gap under the chuck. And this solves the taper problem.

[DCT_Aaron_Engineering]

G'day Rusti and nice work. I remember when I first started using my Colchester late. I was lazy and didn't level it. It was machining an ice cream cone when boring. Cheers, Aaron.👍

[TedRoza]

G'day Rusty. Excellent Tutorial. Well done ✔️ 😊

[Preso]

Unless your lathe is brand new and super rigid, you're always going to get taper and out of round in your parts. The tests you did help to define the limits of the accuracy you can expect.
Regards, Preso

[Steviegtr]

Hi Michel. You cannot knock that result. Almost perfect.
Steve.

[swanvalleymachineshop]

My JFMT has the same wear on the inner way . The rest are perfect . I will probably grind just that inner surface & that will bring it back to near new condition . 👍

[trevorjones]

Hi mate in Australia matty and I go to truck repair shops ang get the old truck brake cams good steel for lathe material 👍

[plainnpretty]

It’s helps to know how your lathe cuts . Sounds like yours is in great shape . Thanks Rusty

[strykerjones]

Is it possible the head stock is adjustable? A tiny misalignment between the headstock and the bed could cause this.

I have a 20X40 Victor(Taiwan Made) lathe where the headstock is removable. When I refurbished the machine I removed it and it took several hours to adjust the headstock. I don’t remember the name of the book I used but it layed out the accuracy standards for machine tools and how to measure them. I cut a 2” piece of 4140 with the prescribed unsupported stick out as a reference and made adjustments.