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View Full Version : How level is level - For a lathe



Pat
19th December 2009, 07:39 PM
OK brains trust, I know the accepted wisdom is for a lathe to be level. I have my M910 level to 0.2° across the bed and .05° along the bed. Now do I go the extra and get these spot on or are they good enough? The headstock and tailstock meet perfectly.

(PS the Wixey is fun to use)

wheelinround
19th December 2009, 08:09 PM
Pat give the floor time to settle then maybe do something about it. A shim under the required spot will fix the tilt even a washer or thin bit of steel would do. Looking at the photo's it might be possible to put it between the bed and stand.

Pat
19th December 2009, 08:19 PM
Ray, I have 6 shims, but will try to lift the bed tomorrow after taking off the tailstock and banjo as atm it is too heavy to lift one handed and slide the shim between the bed and stand.

wheelinround
19th December 2009, 08:42 PM
Ray, I have 6 shims, but will try to lift the bed tomorrow after taking off the tailstock and banjo as atm it is too heavy to lift one handed and slide the shim between the bed and stand.

On 2nd thoughts Pat its obviously faulty send it back or I'll pick it up and swap you mine :U

Now a question did you have a beer on the lathe at the time :rolleyes:

Pat if you have torqued any of the bolts down it could be enough to tip it that far check them including floor ones first.

hughie
19th December 2009, 09:09 PM
Pat at the end of the day its wood lathe and the turning is free hand. If the bed distorts and puts the head and tail stocks out of line because its not level then its not much of a lathe.
My chiwanese was not that sensitive. If you bolt it down on a poor floor and pull the bed around that way, then shim your floor.

But your current level is fine and I would think you've got a good level flat floor and all should be well

arose62
19th December 2009, 09:14 PM
I know the accepted wisdom is for a lathe to be level.


I understood that getting the lathe level was just the simplest way of making sure that there was no twist in the bed/ways.

There have been lathes designed with vertical beds, and Vicmarc have just released a sit-down stand for their lathes which tips it a long way towards the user, so there's no real reason why a lathe can't be out of level, as long as the bed/ways aren't twisted.

In your case, if you have the same amount of out-of-level (measuring across the bed), at both ends of the lathe, and in the middle, then there should be no twisting, so you're fine to go.

Cheers,
Andrew

Pat
19th December 2009, 09:22 PM
Hello Andrew, I checked in the three places, Head, Middle and Tail end and the measurements did not deviate. Straight out the box, not to bad.

colhu
19th December 2009, 09:48 PM
Hi Pat -

0.2 of a degree !! 0.05 of a degree !! I'd like to be able to measure that accurately on a wood lathe. I haven't even checked mine, but it feels OK.

Provided the headstock spindle, tailstock spindle and tool rest are parallel, I can't see that it matters if the bed is up or down hill a little bit. Or am I missing something ?

cheers, Colin

NeilS
19th December 2009, 10:10 PM
Provided centres are aligned (ie no twist in bed), a few degrees one way or the other wouldn't bother me.

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Texian
20th December 2009, 03:26 AM
Pat,
As others have said, if the headstock and tailstock points align ~perfectly, it is fine just as it is. If it ain't broke, do not fix it.

Allen Neighbors
20th December 2009, 08:11 AM
Close is fine with me.
I built my own shed back in 91 or 2. Wooden floors, and there ain't nothin' level in it. Like the others said, if the points meet, you're good to go.
Blessings!
(what's a wixey?)

Pat
20th December 2009, 09:18 AM
Hello Allen, a Wixey is a digital Angle gauge, IE another toy:U

I had a play this morning and just roughed round the outside of a couple of bowls. The little one (125mm dia) I spun up to 1900rpm without vibration, but the larger one (approx 200mm) did not like the speed. I will have to bolt the Yellow Peril down, before I go experimenting more:;

wheelinround
20th December 2009, 09:23 AM
So the bigger one being just 75mm more and it couldn't handle it :o :;

At last sawdust in the shed :2tsup:............new dusty sucked it all up by now.

NeilS
20th December 2009, 11:06 AM
The little one (125mm dia) I spun up to 1900rpm without vibration, but the larger one (approx 200mm) did not like the speed. I will have to bolt the Yellow Peril down, before I go experimenting more:;

Don't think I would run anything at or above 200mm at 2000rpm on any lathe (other than a VB, perhaps) until roughed turned into balance. Bolting down the lathe will not stop the vibration, just the movement of the lathe across the floor. A bolted down or heavier lathe may not move but the bearings will still suffer from the vibration.

Pat, never found the need to bolt down any of my yellow (or green) Woodfasts.

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rsser
20th December 2009, 07:16 PM
If the floor is level then bolt your yellow peril down. Loosen everything off first then start from the bottom up.

And throw that trashy gadget in the bin.

Neil's never had to bolt his object of affection down cos it doesn't run away from a bloke as handsome as he is.

Pat
20th December 2009, 07:31 PM
Neil's never had to bolt his object of affection down cos it doesn't run away from a bloke as handsome as he is.


Where as I am uglier than a Gargoyle. I frighten small children and Lathes run away from my mellon:roll:

Don't worry Ern, once I find the perfect spot for Old Yella, I'll bolt 'er down and tweak every bolt to it's just right, but I'll keep my little gadget, as it is fun annoying certain members of this esteemed board:q

rsser
20th December 2009, 07:48 PM
If I'd known you were going 'yella' I would've spray painted that red handled gouge to match.

The edge would've lasted forever.

NeilS
21st December 2009, 08:37 AM
Neil's never had to bolt his object of affection down cos it doesn't run away from a bloke as handsome as he is.



I always wear a face mask. They don't know how thugly I am............... :U


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