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  1. #1
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    I mean if you really need to do it for a job and have no other way I guess, but damn that still makes me pucker up seeing that. If you have a part you run regularly that needs that, buy a machine that can do it properly.

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    Did you notice that the part is on a 4th axis? Not a 3 axis machine.

    Just nit-picking. That is pretty cool, though I can't imagine it
    being dead nuts accurate. Probably a bit of trial and error before
    you get it right, in other words, lots of setup pieces.

    Whats it cost? Doesn't look that hard to make. A lovejoy on a spring.

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    boy that's neat but somehow uncomfortable to watch. The description said valve block - I could see this being useful in situations where you just need fluid or gas communication or just vent holes - ie - when accuracy isn't all that important.

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    Interesting. I'm sure I came across a video like that before 2019, but can't pin down when. The spring must be in the lower section, even with that relatively long/thin drill I didn't notice any bowing of the drill itself.

    My only complaint? That they didn't program a speedier return to vertical after the hole was completed. I can see not wanting to rapid to it, or doing it while the drill is turning (especially not that), but 300-500ipm should be fine.

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    Quote Originally Posted by Bobw View Post
    Whats it cost? Doesn't look that hard to make. A lovejoy on a spring.
    It would need a fixed centre of rotation joint in order to be able to hold the angle and position with anything close to enough accuracy to actually drill a hole.

    A Birfield/Rzeppa type constant velocity joint is probably what's in there.

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    I have one. I am distributor for them. Never got around to making a video for the website.

    Back in the day I used to make a lot of valve bodies for Hill-Rohm hospital beds. I would of given my left nut for one of these. Not every angled hole is +-.001 in position.

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    Quote Originally Posted by fmari --MariTool- View Post
    I have one. I am distributor for them. Never got around to making a video for the website.

    Back in the day I used to make a lot of valve bodies for Hill-Rohm hospital beds. I would of given my left nut for one of these. Not every angled hole is +-.001 in position.
    Can you add that to the description on your site?

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    Quote Originally Posted by fmari --MariTool- View Post
    I have one. ....
    What do you use it for?
    Do you spot the start hole straight so that it will tip so nicely? What kind of spot? Ball, slot, cdrill?
    .375 drill?
    For sure a niffy tool to have in the box.
    Offset 45 max?
    Bob

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    Unit is brand new. I ordered one for stock. So once I have it online I have at least one in stock.

    Yep, will put left nut in the bullet points, :-).

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    Around $700 each.
    This unit takes ER16 so .437 max dia if you use our oversized ER16 collet.

    img_1482.jpgimg_1483.jpg

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    I wouldn't have thought a regular old cross universal joint would be in there. Keeps it simple I guess.

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    Quote Originally Posted by fmari --MariTool- View Post
    I have one. I am distributor for them. Never got around to making a video for the website.

    Back in the day I used to make a lot of valve bodies for Hill-Rohm hospital beds. I would of given my left nut for one of these. Not every angled hole is +-.001 in position.
    Please make a video.

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    Quote Originally Posted by Garwood View Post
    I wouldn't have thought a regular old cross universal joint would be in there. Keeps it simple I guess.
    That's what it looks like from the picture Frank posted.

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    This looks uncomfortable.

    Kinda grotesque! But pretty cool that it works

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    Totally overengineered.

    Just do dis:

    bent-drill-bit-hand-accident-600w-7742542.jpg

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    Quote Originally Posted by gregormarwick View Post
    It would need a fixed centre of rotation joint in order to be able to hold the angle and position with anything close to enough accuracy to actually drill a hole.
    I am guessing that both upper an lower has a spring to allow the joint to extend, and holding the angle accurate is in the tricky upper/lower housing mating point.
    BUT!
    How is the programming done?
    It's gotta be with a Macro, as the side movement distance and then the subsequent pecking "angle" calculation is deadly dependent on the length of the tool.

  22. #18
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    Quote Originally Posted by SeymourDumore View Post
    I am guessing that both upper an lower has a spring to allow the joint to extend, and holding the angle accurate is in the tricky upper/lower housing mating point.
    BUT!
    How is the programming done?
    It's gotta be with a Macro, as the side movement distance and then the subsequent pecking "angle" calculation is deadly dependent on the length of the tool.
    Presumably, both shafts are solid with the coupling providing the fixed centre of rotation, and there is a spring loaded sliding sleeve on one side of the coupling. From Frank's photos it looks like the sliding sleeve is on the collet side, and shank side is solid.

    Programming would be the same as with an angle head, except for the engage and disengage moves which would be a calculated radius perpendicular to the axis of the hole.

  23. #19
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    Been done for years in the field with much larger L:d ratios....."directional well drilling"...

    Also "directional boring" for underground utilities, with electronics in the drill tip/head to steer it.

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  25. #20
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    Quote Originally Posted by gregormarwick View Post
    From Frank's photos it looks like the sliding sleeve is on the collet side, and shank side is solid.
    Hmm ... Dunno.
    Unless I'm missing something, both members of the "CV-joint" has to slide in order to allow the common contact point of the upper and lower outer sleeves.

    Never programmed an angle head, but now that I'm thinking about it, the programming should be the same, but that still does not solve my problem
    of figuring out how it's calculated?

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