How do I solve this?

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Anzaniste:
Oh bugger a few more of the brain cells have gone awol, it must be reading Connelly which is comprehensive to say the least.

I've tightened up the gib s on the knee and it looks as if that was what was causing the dti funny reading against the upright. I shant know if it has solved the original problem for a bit as I have taken all the other bits to pieces!! :proj:

Hmmmm! :palm:

krv3000:
HI glad to see you may have sorted the problem

Anzaniste:
KRV thanks for your kind thought,however, I dont know if I've solved the problem. So far I have shown the the gib strip on the vertical slide needed adjusting. I shall do all the others plus a bit of deep cleaning before I actually cut metal. Then I will know if I have solved the problem. I always was a pessimist. :(

Oh, and a J Block is a Johannsen gauge block - Aa :palm:haaa a slip gauge

Fergus OMore:
Assume the side where the gib fits is straight
You should have scrape marks indicating this
Turn to the other side and look for the scraper's marks.
If there is a continuous evidence of scraping, there is very little wrong.
The only two problems left on that are the gib itself which should be blued in against a known 'reference'
At a push you try to insert feeler gauges or cigarette paper.
Then you should check the mating edges on the machine the same way.

Yonks back in the mists of time, I did the square shears on a Myford with nothing more than a bit of oversize rectangular bar which had been scraped and blued against the newly Blancharded bed of the lathe. It's as simple or as difficult as that.
If you find that there is the abilty to pull out a single bit of cigarette paper or your thinnest feeler gauge or see daylight between the two, you have wear ---and there is nowt that you can do until some form of remedial work is carried out.

I sincerely hope that it is all down to poor adjustments but that is the way that one goes.

Anzaniste:
:update:
I haven't been ignoring every body but have been busy with other projects and have also been on holiday.

I have now stripped down the various slides (except the knee) and reset the gib strips which has sorted the problem of he dti wandering off the 1-2-3 block.
However.........

The standing jaw still leans a bit and a new phenomenon has reared its ugly head. I gripped in the machine vice a piece of ground stock sticking above the vice jaw by a couple of inches to emphasize the amount of lean in the standing jaw. Whilst I was setting this up I noticed that as I tightened the vice it leant more :loco:!! As the vice overhung the table I moved it so that he standing jaw was fully supported this reduced the effect considerably. I'm still a bit disappointed in the vice but at least I know what to do.

As it was my birthday t'other day she whose name shall be spoken in hushed and reverent tones very kindly offered to buy me a nice new shiny tool :ddb:. Bless her I am now the proud possessor of one of those fancy tramming tools. (I was planning to build one a la Bogs but you can't turn down a gold plated offer)

Trammed in X axis a treat but horror of horrors the Y axis was way out. I'm now flummoxed 'cos there is no obvious method of adjusting this error. Funnily I have never trammed in this direction in the past because the head is not adjustable in this direction so I never saw the need to do it. With the new gadget its dead easy and quick so I just did it 'cos it was easy. :palm:

Can any body offer suggestions how I can put this right.

The mill is a CENTEC 2A. The error of .010" across the table which seems quite a lot to me. :loco:

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