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Type: Posts; User: gregormarwick

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  1. First of all, you have to be cutting VERY small...

    First of all, you have to be cutting VERY small threads to be worrying about single digit microns. As in, way below the application range of laydown threading inserts.

    For a typical thread that...
  2. I do this all the time, but only with Sandvik...

    I do this all the time, but only with Sandvik inserts. They have never let me down, but I have been bitten by others (Vardex in particular, have proven to not be reliable for this).

    Especially on...
  3. Maybe I missed it, what tool did you have? My...

    Maybe I missed it, what tool did you have?

    My favourite small feedmills are Tungaloy dofeed.
  4. Agree with this. I have had the same experience...

    Agree with this. I have had the same experience with 12mm x 50mm 3fl in 6061T6. Brand new endmill squeals, and absolutely nothing will stop it, fades when they have dulled a bit, but flip side is...
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    If you can get away with it then you can get away...

    If you can get away with it then you can get away with it.

    There are variables that determine whether you can get away with it or not. The materials you cut, the coolant you use, the general...
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    Every tool system requires perfect cleanliness if...

    Every tool system requires perfect cleanliness if you don't want to suffer adverse effects.

    With all respect Frank, if I caught any of my guys swapping out tools in a hydraulic without cleaning...
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    That has pretty much been my experience with...

    That has pretty much been my experience with every "flexible" insert tool so far.

    But the biggest problem is the security tradeoff.

    In order to accommodate two or more shapes of insert, the...
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    For one thing, I have done all sorts of abuse to...

    For one thing, I have done all sorts of abuse to insert drills that you can't even imagine, and I have never seen one break off at the base of the flutes.

    Why are you retracting?

    What is the...
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    Surely not!

    Surely not!
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    What drill?

    What drill?
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    If your hole is shallow enough that you can...

    If your hole is shallow enough that you can helical drill it with that thing, then it's shallow enough that a half decent insert drill is not going to care about the inclined exit...

    Like I said,...
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    Probably not much to gain from it. Machine...

    Probably not much to gain from it. Machine construction and relatively small integrated motor spindle doesn't really scream 50 taper to me.
  13. What The Fuck If this is even close to true...

    What
    The
    Fuck

    If this is even close to true (and my scepticism levels are off the charts right now), then perhaps you should consider getting whatever is obviously broken on your machines fixed....
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    Flip side (especially on 40 taper) is that any...

    Flip side (especially on 40 taper) is that any time you increase gauge length you have negative consequences on everything. And milling chucks (especially on 40 taper) suck for gauge length.
  15. Buy Pump spray bottle printed, unfilled online...

    Buy Pump spray bottle printed, unfilled online

    I've found these are the answer for most liquid spray applications. They are super expensive compared to any basic spray bottle (something like £30...
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    F360 is autodesks darling. FC will eventually be...

    F360 is autodesks darling. FC will eventually be retired, when that will happen is anyone's guess, but it will.

    In the meantime, FC is still miles ahead of Fusion. If you have both, do your...
  17. G PD 40.431-40.611 G Minor 38.952-39.592 Rp...

    G PD 40.431-40.611
    G Minor 38.952-39.592

    Rp PD 40.251-40.611
    Rp Minor 38.772-39.132

    You can see there is overlap.

    Theadform on both is basic 11 Whitworth, so yes a standard full profile...
  18. Rp is a strange one. It is a parallel female...

    Rp is a strange one.

    It is a parallel female thread, but both Rp and Rc (tapered female) mate with the same tapered male thread (R), so use the same tapered gauges.

    G and Rp are almost the...
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    Practically everything I've ever seen from Nine9...

    Practically everything I've ever seen from Nine9 is an (expensive) solution in search of a problem. That looks no different.
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    If you are absolutely determined to use a drill...

    If you are absolutely determined to use a drill chuck in your router (which I agree is a pretty terrible idea), at least use an integrated one designed for use in a cnc spindle.

    More expensive,...
  21. Maybe try a downcut endmill, to push the tube...

    Maybe try a downcut endmill, to push the tube into the vice instead of lifting it out.

    Variable Helix End Mills for Aluminum Alloys - Square - Downcut
  22. High feed is the answer. If the wall finish is...

    High feed is the answer. If the wall finish is not that important, single pass helical from solid with a 0.5mm stepdown. It will still leave a better finish that you are getting now, I'd put money...
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    I'm sure it's possible to get bad Al from Russia,...

    I'm sure it's possible to get bad Al from Russia, but in fairness, you can get bad material from anywhere. I've had faulty metals from Norway, Denmark, Italy, even from the US. It happens, doesn't...
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    Not sure if I've ever had anything from Ukraine...

    Not sure if I've ever had anything from Ukraine specifically, but I have cut a good amount of Russian Ti and Al and never had any issues. Lots of forged steel from the ex-soviet eastern European...
  25. OX, I am one that signed up early on over on "the...

    OX, I am one that signed up early on over on "the other site", so I guess I am one of the "they" that you are talking about.

    Tell me, please, why do you sound so aggrieved? I can't help but be...
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