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Thread: Leveling a hercus 260 Prt II
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19th Feb 2012, 02:11 PM #16Dave J Guest
I had my lathe bolted down for years with no problem at all. I moved it out into the centre of the shed and didn't want to drill holes there, but it's been moved again and where it is now I am thinking of bolting it down again. Whats this about not bolting it down, once it's bolted down it wont move around.
Dave
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19th Feb 2012, 03:21 PM #17Senior Member
- Join Date
- Feb 2011
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- Melbourne
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It's just common sense I think, if the stand is more rigid than the lathe and you pull the bolts tight the lathe will conform to the stand. If the lathe is more rigid than the stand then the stand will conform to the lathe. If you bolt a stand to a concrete floor then they both conform to that. You just have to keep one or the other level, that's the whole purpose of using shims.
The only way you could twist it is by attaching it to a surface thats twisted or has highs and lows. The original post seemed to be at the other end of the spectrum, his stand decided to conform to the lathe bed.
That's just my thinking anyway. Im also happy to be corrected
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19th Feb 2012, 03:54 PM #18
Hi slhouetteV8,
Not quite what I was referring to, let's say you are levelling a lathe, and the twist in the bed wants to lift one corner, the only way to get that twist out is to bolt the lathe down, so you have adjustment nuts top and bottom of the support feet. That way you can pull a corner down to remove the twist.
Regards
Ray
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19th Feb 2012, 05:00 PM #19Dave J Guest
We had a member here with that trouble, but he didn't want to bolt it down, so we recommended sand bags or something else heavy to weigh it down, but the best way is to bolt it down like Ray said.
Dave
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19th Feb 2012, 06:31 PM #20Senior Member
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- Melbourne
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19th Feb 2012, 09:13 PM #21Distracted Member
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- May 2010
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- Lower Lakes SA
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I have straightened a lathe bed by adding a tension strut to the angle iron stand, from lower left rear to upper right front. It was just 1/2" rod with a turnbuckle to apply controlled tension. It worked very well. (Turned out the bed wasn't twisted at all but that's another story.)
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19th Feb 2012, 09:57 PM #22Diamond Member
- Join Date
- Oct 2011
- Location
- Sydney, NSW
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- 1,249
Hi,
To clarify, all I did was put 40 kg of weight at each end and remove the old shims from the corners. I didn't need to adjust the lathe level bolts. It seems to be cutting well, less than 0.01mm difference over >100mm. I do have a slight wobble still but afraid I can't do anything about that at the moment. Surface finish is hard to judge accurately as I'm using MS blackbar offcuts.
Ben
ps if I could, I would bolt it to the floor. The navy bolted them to ship floors. And the army bolted them to truck floors and still do in the portable 20 ft workshop containers.
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20th Feb 2012, 08:43 AM #23
Adjustable feet
I built my a bench for my lathe, similar to the one in another thread. The frame was about 80kg, plus drawers and parts.
I used adjustable feet to get my bench stable and level before working on the lathe. I used these...
Ball Jointed Adjustable Feet - Bolt Down Adjustable Feet - Fixed Adjustable Feet
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