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  1. Thread: CNC Beginner

    by Tichy
    Replies
    32
    Views
    1,705

    Fun question, actually. For me "small" is...

    Fun question, actually.

    For me "small" is where I can grab a box of them and carry it to the machine.

    "Medium" is where I can routinely pick up four of them and mount them in my mill in one go,...
  2. Thread: CNC Beginner

    by Tichy
    Replies
    32
    Views
    1,705

    Great suggestion, I mean, you have to try to get...

    Great suggestion, I mean, you have to try to get some fun out of paying six bucks for a bloody cup of coffee... ;)
  3. Love that tool spec. I'll try to sell it to...

    Love that tool spec. I'll try to sell it to management next round of these. Seco's expensive but hell they make quality sh*t.
  4. Thread: CNC Beginner

    by Tichy
    Replies
    32
    Views
    1,705

    What's your background? Seems like an important...

    What's your background? Seems like an important question.
  5. Replies
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    939

    900rpm sounds very low. High speed low feed is...

    900rpm sounds very low. High speed low feed is your friend with alloy steels, I think, especially with a low-HP machine?
  6. Replies
    13
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    939

    I had success recently with prehardened (Impax...

    I had success recently with prehardened (Impax Supreme) using a Seco 40mm round insert face mill @ 2mm DoC and 15mm WoC airblast. Ran fine. Their high feed would probably be the better option, just...
  7. Replies
    16
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    1,470

    Iscar EC-E5L 5 flute for this. I'd run a "flat...

    Iscar EC-E5L 5 flute for this. I'd run a "flat trochoidal" to clear the pockets. Done similar on a Brother TC with only about the same HP as your average moped. Off the top of my head maybe Vc250...
  8. Replies
    15
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    889

    Well, update: The fixture worked. Ran the...

    Well, update:

    The fixture worked. Ran the drill slow (Vc100 F.08) and there were no stability issues. That said I realize I could've done this a ton better. I should've put two vises together in...
  9. Replies
    15
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    889

    Oh hell why not, here you have a pic so you know...

    Oh hell why not, here you have a pic so you know what I'm talking about.

    276932
  10. Replies
    15
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    889

    Not an option, we don't have one and I'm not high...

    Not an option, we don't have one and I'm not high up on the food chain to suggest to outsource.
  11. Replies
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    889

    To clarify there are six 52mm holes at different...

    To clarify there are six 52mm holes at different positions. The material is a disc but one side is shaved off leaving a ~160mm straight line, I use this for fastening the piece.
  12. 46 here. Echoing. I won't even fix a flat tyre on...

    46 here. Echoing. I won't even fix a flat tyre on my bike. I know what I'm good at, and being a handyman isn't one of those things.

    Of course that'd likely change if I ever got any good at manual...
  13. Replies
    15
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    889

    Strategies for large holes in 304

    I need to make some 52mm diameter holes through 304 stainless steel in my VMC.

    The material is a 250mm radius 20mm thick disc.

    The fixture is untested (custom-built jaw expansion for the vise)...
  14. Replies
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    2,425

    I'd just read it in order to avoid going thru...

    I'd just read it in order to avoid going thru life like a wiki-reliant monkey.

    Oh, and then I might buy that nifty app too for convenience.
  15. Replies
    6
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    847

    Yes, what he said. If you don't wanna bother...

    Yes, what he said.

    If you don't wanna bother with that, just try doubling the RPM on the final cut and take off 0.3mm. Or run it trochoidal/multiple passes.

    You'll still see the tool path in...
  16. Replies
    19
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    1,856

    Correct. I see this using SC all the time. I run...

    Correct. I see this using SC all the time. I run my 5.0mm drills at .17 feed in mild steel with only air coolant. They work and they don't break.

    This puts me at odds with the common wisdom at my...
  17. Replies
    19
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    1,856

    ?! Well, that's... ambitious :D

    ?!

    Well, that's... ambitious :D
  18. Replies
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    2,565

    Yeah, that idea could be meritable. And yes the...

    Yeah, that idea could be meritable. And yes the code would be only one line if you wanted :D (G16 G91 Y3.6 K100)
  19. Replies
    19
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    1,856

    Hum well that's embarrassing. Recalculating (Vc30...

    Hum well that's embarrassing. Recalculating (Vc30 F.15-.20) I end up with 478RPM and F72 as a starting value with potential for around F95. (mm/min) A good HSS drill should be capable of that...
  20. Replies
    19
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    1,856

    A new Hurco VM10i provides 15hp power and 65nm...

    A new Hurco VM10i provides 15hp power and 65nm torque; should be no problem for him to run a 20mm HSS drill at any speed it can take.
  21. None, I had no idea of that, please ignore my...

    None, I had no idea of that, please ignore my ignorance :)
  22. Replies
    19
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    1,856

    Just spot and boom. The general rule is high...

    Just spot and boom. The general rule is high speed low feed. For HSS that means low speed lower feed. :D 20mm 40mm deep is cake. Vc ~30, G83 cycle, peck every five millimeters or so (I know that's...
  23. What mhajicek said, I don't understand why you...

    What mhajicek said, I don't understand why you need line numbers. Yes I'll have them at tool changes and no more. When I write macros I always optimize for speed by removing all redundant code bits....
  24. Replies
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    2,565

    Iscar EC-E7 2 millimeter seven flute end mill,...

    Iscar EC-E7 2 millimeter seven flute end mill, you will not find a better tool, go for a trochoidal path and chances you break it are slim to none. You'll save time with predrilling yes.
  25. Replies
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    2,070

    A newbie at the material tasked with .3mm...

    A newbie at the material tasked with .3mm tolerances on a 30mm deep pocket in hard PU using a manual Bridgeport mill??!!

    RUN!!!

    General advice only, I'm a bloody noob too: as you probably know...
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