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Offline 1manband

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machinist tool how to questions.....
« on: May 10, 2014, 08:59:49 am »
there are more than enough experienced folks here!.......

when i moved my small lathe into the basement, during the course of putting it back together noticed that there is a small gap where the ways bolt to the upper legs.

from looking at this closer, i could tighten the mounting bolts up more.  is this a good idea?  or should they remain as is?  the weight of the ways and motor close this gap up.

don't want any undo lathe vibrations.

have never noticed this before, and lathe was working in this condition for years.

regards
-joe
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Offline aclarke

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Re: machinist tool how to questions.....
« Reply #1 on: May 10, 2014, 11:58:51 am »
Short stubby legs for a bench mount?  Adam
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Offline 1manband

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Re: machinist tool how to questions.....
« Reply #2 on: May 10, 2014, 12:40:57 pm »
Quote from: aclarke on May 10, 2014, 11:58:51 am
Short stubby legs for a bench mount?  Adam

yes.... the upper pair of legs under the ways.

don't know if by tightening these bolts down more, if it will introduce more vibration.  don't want to honk on them too much.  if i break them, will be difficult to replace.  where they are located, cannot get a torque wrench on them.

right now, everything is sitting nice and level.

-joe


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Offline aclarke

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Re: machinist tool how to questions.....
« Reply #3 on: May 10, 2014, 02:53:56 pm »
I think as long as they're tight it should be ok.  Be aware of any twisting or binding when attaching the bolt from feet to the bench, that's where you could alter the flatness of the bed by tightening to an uneven/twisted surface. The little lathes don't have the most rigid beds so that could be an issue.
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Offline 1manband

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Re: machinist tool how to questions.....
« Reply #4 on: May 10, 2014, 08:43:42 pm »
Quote from: aclarke on May 10, 2014, 02:53:56 pm
I think as long as they're tight it should be ok.  Be aware of any twisting or binding when attaching the bolt from feet to the bench, that's where you could alter the flatness of the bed by tightening to an uneven/twisted surface. The little lathes don't have the most rigid beds so that could be an issue.

will bring home the calibrated level from work, to do some more checking on the things you mentioned.  twisting was something i didn't consider.  will check the floor as well.

maybe will shim it if necessary.

just had vibration on my mind.

thanks adam.
-joe


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Offline 1manband

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Re: machinist tool how to questions.....
« Reply #5 on: August 31, 2014, 05:08:29 pm »
looking at tool posts.  axa size.

anyone have experience with aloris clones?

regards
-joe
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Offline Al Smith

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Re: machinist tool how to questions.....
« Reply #6 on: August 31, 2014, 09:52:06 pm »
Yeah I have one myself .It does fine except an Aloris vee slide doesn't fit it .There are off just a tad bit .It's not a big deal to me because I make my own slides .

I think I have about 40 slides (tool holders ).I got so it took me an hour ,give or take to carve one out on the Bridgeport . They were just cold roll bar stock,nothing fancy .
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Offline aclarke

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Re: machinist tool how to questions.....
« Reply #7 on: August 31, 2014, 10:03:18 pm »
Joe, if you get an Aloris type clone make sure it has the wedge type tightening jib, Not the button type as they slip easily.
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Offline 1manband

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Re: machinist tool how to questions.....
« Reply #8 on: September 01, 2014, 07:05:31 am »
thanks guys.

al...
do the slides not fit (interchange) because of poor craftsmanship?  most all the clones seem to be selling with 4 or 5 slides included.  if they don't interchange between different brands, thinking i should stay away?

adam...
seen both kinds out there.  will focus on the wedge style.


regards
-joe

 
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Offline Al Smith

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Re: machinist tool how to questions.....
« Reply #9 on: September 01, 2014, 07:35:20 pm »
I originally made most of my slides .Then a tool and die maker friend of mine made me some using Aloris slides as a pattern ,those didn't fit .Problem was he made them out of heat treated 4140 steel .He had to use surface grinder to repair them but they eventually did work .

Now this guy was pretty good ,Fact he made some wedge type tool posts .So I know if it was a copy of Aloris he as dead on with the size .

I bought some slides which were not Aloris such as knurling wheel slides that did fit but they were not Aloris .

On mine you can adjust the gimbles a little bit so if the slide isn't dead on it will still work .I have no idea what brand it is .
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