Gallery, Projects and General > How do I??

Facing on a mill

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Soren Hansen:
I have been looking at a few video's about milling on youtube (where I have gotten most of my knowledge by watching Tubalcain), and got to wonder:

Many times I see this or that guy cutting a peace of square stock, plonking it in the mill, facing it, turning it over and facing the other side. This I can understand.

Then he turns it 90 degrees, faces it of, top and bottom, and with a 1000watt smile exclames that now are those 4 faced off sides exactly at 90 degrees angles.

Are square stock really that precise in the UK and the USA ?? Here in Denmark, I have seen square stock being up to 10 degrees off.

Can one rely on when clamped in the mill vice the 2 first faced off sides will be at exact 90 degrees to the bed ?

John Rudd:
Theoretically, yes, in a perfect world if:
The machine is perfectly aligned to the table, and the vice is also in perfect alignment......

Thats what I think.... :scratch:

PekkaNF:
Well if you buy the sock milled and ground...

othervice a bit more work:


Pekka

Soren Hansen:
Hi PekkaNF

Thank you for the link.

Then I just have to be sure that the vice bed and back jaw are at exactly 90 degrees.

But that could be achieved by mounting the vice in the mill and facing of the back jaw. One have to asume that the vice bed will be parallel to the mill board, or what ?

Will I have to disasamble the vice, turn it upside down (so the vice bed lies flat in the mill table) and skim the bottom of the vice to get the top and bottom side to be parallell ?

chipenter:
Check for square with a dial guage first , nip one bolt and run the table back and forth and adjust untill the dial dosn't move . nip up the outher bolt and check again tighten both and recheck , for the virtical run the dial guage up and down the fixed jaw .

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