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Type: Posts; User: AlexO

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  1. Replies
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    No problem. Obviously, ball screws are reversible...

    No problem. Obviously, ball screws are reversible and one must control that. Somehow.
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    That's an excellent point. The problem in...

    That's an excellent point. The problem in practice is that a grease which performs excellent in certain conditions might not be that great in others. Just as an example one wants a thick base oil for...
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    Good point !

    Good point !
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    Not close to fast. Do not underpack as that will...

    Not close to fast. Do not underpack as that will toast the bearings absent enough speed to create suction. If you over-pack bearings they'll get hot and you can either run them in to kick out excess...
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    Matti, I think Polyrex has to large a viscosity...

    Matti, I think Polyrex has to large a viscosity difference between 40 and 100C - I like to see that around 5 times or less. Not 9.
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    Don't you worry about me. Worry about the fathers...

    Don't you worry about me. Worry about the fathers of other children around you. Leave children out of your shit humor - internet is not a "safe" place and took EIGHT minutes to know who and where you...
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    Well, yes. Boxways are adjusted by measuring the...

    Well, yes. Boxways are adjusted by measuring the movement. You push left/right while reading the movement with an indicator and adjust until you read what the manufacturer says in the Service Manual....
  8. Cheapest will be SKF ( ABBA ) with an OEM...

    Cheapest will be SKF ( ABBA ) with an OEM discount. You should be under $80/m of rail and under $50/carriage.
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    Looks super! Great choice of color, too. What...

    Looks super! Great choice of color, too.

    What I do of late is to paint in a gloss enamel and once stone dry I apply one coat of eggshell enamel. I find it gives a more forgiving kind of surface....
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    In general, yes. At least for lathes coming from...

    In general, yes. At least for lathes coming from reputable manufacturers and properly supported. Some lathes have a noticeable tendency to bend in the middle under the weight of the apron/tailstock +...
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    Please, do not reply to my posts. You'll just...

    Please, do not reply to my posts. You'll just look more stupid. Keep making off the cuff "statements" here i.e. troll the forum - seems to work with quite a few here who "engage" you. Doesn't work...
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    1. No, not at all. 2. See no. 1 Please put...

    1. No, not at all.
    2. See no. 1

    Please put brain in gear before typing. You can do better.
  13. Thread: Measuring a Bore

    by AlexO
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    As by now you have the technique worked out, one...

    As by now you have the technique worked out, one last thing to remember is that the finish of the bore has a massive influence on the measurement.
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    Power word here is "dimly". :) Depending on the...

    Power word here is "dimly". :) Depending on the surface one might want a proper light.
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    I use something very similar to this : ...

    I use something very similar to this :

    Monochromatic Light Source - Kemet

    In a pinch :) you could improvise rubbing salt into a wick or a laser diode off ebay.
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    I don't think you and I should air our problems...

    I don't think you and I should air our problems here. I do what I can - not my fault you've been around the block so many times.
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    Thank you, I'm familiar with those. No carbide...

    Thank you, I'm familiar with those. No carbide anvils unfortunately.
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    Operator doesn't know how to use it or which end...

    Operator doesn't know how to use it or which end goes in the hole, I suppose. :)
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    Thank you. Your patience here is appreciated.

    Thank you. Your patience here is appreciated.
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    You're winding up yourself because you think I'm...

    You're winding up yourself because you think I'm here to chat. Which I am not. For example, I have no inclination to dissolve your "not entirely sure". I just don't care.
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    One of the problems I've noticed often here is...

    One of the problems I've noticed often here is how replies to the OP are written without reading the OP properly and ( ! ) under the apprehension that the OP is an imbecile. My need for the 3 point...
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    Well, what could " I need to be sure of 4...

    Well, what could " I need to be sure of 4 microns" might mean ?

    8-10 I used to have a Mitutoyo with 2 microns uncertainty. And I think Tesa ( or Mahr ? ) made one too.
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    Internal lapping.

    Internal lapping.
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    3 point micrometer

    I'm looking for 6-8 / 8-10 / 10-12 and 12-15 3 point micrometers, NOT digital.
    I need to be sure of 4 microns. Also, I absolutely need carbide anvils and they must be replaceable and..available....
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    I'd think so, too. There used to be two superb...

    I'd think so, too. There used to be two superb HBM's here in Johannesburg, machines I knew well. Mint condition. In Dec/Jan when is usually very rainy here they could move quite a bit ( clay subsoil...
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