slim_boy_fat
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I've got a solution buried in my storage unit which I've used for decades. a simple sliding frame track you can make up with some 1" angle iron. It slides loosely back and forth on a "square" table like yours, and the vice slides left to right within the frame to position the work under the drill bit. With a simple twist of your hand, the sliding frame jambs itself against the vice and the table at the same time with adequate grip to keep the vice from moving or lifting. I'll try and work up a sketch for you John, as I won't be able to get to my storage unit this week. Its a simple brilliant idea that my Junior High School metal shop teacher devised, and has stood the test of time for me.If a person wanted to secure a machine vice like this to a pillar drill or mill table, how would he go about it? Are 'off-the-peg tie-downs' to fit the edge holes [which are 10mm in diameter], or do I have to make my own?
View attachment 260741
I'll try and work up a sketch for you John, as I won't be able to get to my storage unit this week.
Would be easy enough to make your own, you could use a shim under the pouter edge rather than try and form the lip
View attachment 260744
EDIT: Forgot to mention. When you jam the frame by twisting the vice, in either direction, you need to hold pressure against the vice while drilling
Thanks for noticing, you are correct.That is superb, thanks. Could I prevail upon you to do some light Tippexing on it and reupload. The direction in which you show it being skewn is, I think, incorrect. From the top, a normal twist drill will rotate clockwise, so the skew should also be in that direction so the drilling force tightens the clamping force rather than loosens it.
Would be easy enough to make your own, you could use a shim under the pouter edge rather than try and form the lip
View attachment 260744
If you want a photo let me know.
Ahh, bless, he's even coloured it in!Thanks for noticing, you are correct.Sorry, it was late at night and was a quick sketch to show the concept. I can't edit the previous post, but here you go, a corrected table sketch with the frame skewed the opposite way. I'll ask the Moderator to delete the photos in post #9.
It would be interesting to know if anyone makes one up, how they get on with it ?
View attachment 260797 View attachment 260798
Ahh, bless, he's even coloured it in!
Yeah, old habits die hard. It all started years ago when we were building a broadcast centre. There were radio production rooms, an on the air booth, and other rooms which required acoustically rated walls which were to be built on and through a vast computer floor grid system. Interpreting the complex wall configurations were a nightmare to discern on the blueprints, so I used different coloured pencils to highlight the half dozen different types of walls for my crew and I to easily see which went ware at a glance.
So, that's my long winded explanation of how old habits die hard.![]()