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Type: Posts; User: mhajicek

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  1. Replies
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    Most lead time is simply waiting in line for your...

    Most lead time is simply waiting in line for your turn on the machine. Programming, if handled properly, happens during that waiting time.
  2. These days I consider steel endmills to be for...

    These days I consider steel endmills to be for hobbyists, and for a few special cases (like certain plastics), where the sharper edge is beneficial.
  3. I can't speak directly for "older" Haas machines,...

    I can't speak directly for "older" Haas machines, but the five year old machine we have here will still hold +/- .0002" all day every day. Tighter if I'm careful.
  4. I wouldn't touch a government job with a ten foot...

    I wouldn't touch a government job with a ten foot pole. You will NOT turn a profit. The documentation requirements alone would bury you.

    What machines do you have?

    The best approach is to...
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    I should add that there's a danger to using...

    I should add that there's a danger to using automated systems for the simpler jobs that they can already handle. If widespread it will significantly reduce the number of people getting experience by...
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    There has been ATP (Automatic Tool Pathing) for...

    There has been ATP (Automatic Tool Pathing) for decades, but it requires a lot of setup for your family of parts. Once it's all setup you can quickly run other parts in the family through it,...
  7. Thread: Coolant mixer

    by mhajicek
    Replies
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    1,341

    That's why I like the automatic mixer on the...

    That's why I like the automatic mixer on the Haas. Machine tells me it's low, I check the mix, if the concentration is low I bump the mix ratio and hit the button. If it's high I drop the ratio and...
  8. Thread: Milling PVC

    by mhajicek
    Replies
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    678

    I think it's going to vary a lot depending on...

    I think it's going to vary a lot depending on your setup. You'll be material limited, not cutter limited. That's to say the cutter will be happy at max RPM and feed, but your material will likely...
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    There are links to download the CAD models, that...

    There are links to download the CAD models, that should get you all the dims you need.

    Long Length Machinable Uniforce(R) Clamps | Mitee-Bite Products LLC.
    Long length Channel (7075-T6) & Steel...
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    I met an officer who vehemently believed that...

    I met an officer who vehemently believed that rifling increased the muzzle velocity of the round.
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    Every NDA prohibits the sharing of confidential...

    Every NDA prohibits the sharing of confidential data with other entities without prior written approval. You and your cloud service are another entity, therefore sharing a part file with the cloud...
  12. I've never known a pullstud to effect the runout...

    I've never known a pullstud to effect the runout of a toolholder, unless it's the wrong geometry for the machine. The concentricity is set by the taper contact, provided you have sufficient draw...
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    Rule of thumb I learned decades ago is you hold...

    Rule of thumb I learned decades ago is you hold steel with steel. Sure, you can get away with holding it in aluminum, but for how long? How many cycles before the aluminum deforms and the part...
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    Then cut the top off, flip it over, and use the...

    Then cut the top off, flip it over, and use the bottom for dishing sheet metal into:

    Oxygen Cylinder Dishing form. Ten second tip #17 - YouTube
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    I just found out at 4:00pm today I don't have a...

    I just found out at 4:00pm today I don't have a big enough piece of Ti6Al4V-ELI for parts needed by Monday. Performance Titanium found a drop that'll work and promised I'll have it tomorrow so I can...
  16. Wire like that you can anneal with a butane...

    Wire like that you can anneal with a butane lighter. Then once it's shaped, heat it again with the lighter and quench it. Temper in the kitchen stove if you like or just watch for color.
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    What kind of firearms does your Aunt Bob...

    What kind of firearms does your Aunt Bob manufacture?
  18. Thread: Coolant mixer

    by mhajicek
    Replies
    24
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    1,341

    Automatic Coolant Refill...

    Automatic Coolant Refill

    And for the saw, I just spray from the coolant hose.
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    Check this out: ...

    Check this out:

    https://www.iso.org/obp/ui/#iso:std:iso:5835:ed-1:v1:en

    But the threadform should be very well documented on the designer's end; if it isn't, they're pretty fly-by-night.
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    It will be a custom threadform; you'll likely...

    It will be a custom threadform; you'll likely need to have custom thread whirling inserts made. The customer's print should specify the threadform. If they don't have a print they'll never get it...
  21. As always, charge what the market will bear. If...

    As always, charge what the market will bear. If 10% of the customers you have now won't pay 10% more, you're back where you started. If it's more, you're worse off.
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    I'm 45, and got my big break five years ago. Who...

    I'm 45, and got my big break five years ago. Who you know, what you know, and who knows what you know.
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    Did you program with dynamic or lots of rapid...

    Did you program with dynamic or lots of rapid moves, and then run it on a slow machine? Mastercam will not account for acceleration or rapid speed when calculating cycle time. It will also run...
  24. Yup, bandsaw. Plastic to Titanium to semi-hard...

    Yup, bandsaw. Plastic to Titanium to semi-hard steel. I use the chop saw for cobalt chrome or full hard steel.
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    Fast, efficient, quiet; kid's a robot!

    Fast, efficient, quiet; kid's a robot!
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