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  1. Replies
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    If it were me, I'd politely tell them, "I'm...

    If it were me, I'd politely tell them, "I'm cancelling the order. This is how I do it."

    Because otherwise, when it arrives toppled, their response will be, "this is the first time it's ever...
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    If rigidity is a major concern, consider a...

    If rigidity is a major concern, consider a 50-taper 500mm machine.

    We just got a 21-pallet DMG Mori NHX5500 (CAT50, 500mm), our fourth horizontal from them. All our NHXs are roller guide. The...
  3. I should also mention we have a Multicam Apex 3R....

    I should also mention we have a Multicam Apex 3R.

    It's a great machine, but I don't know if I'd call it high precision, at least not compared to a VMC. We use it for cutting wood, corrugated, and...
  4. If you're just drilling holes on the sides, you...

    If you're just drilling holes on the sides, you can use aggregate (angle head) tooling on a 3-axis machine. The cost savings will be significant compared to a 5-axis machine. The catch is that the...
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    200 sfm, 0.004 ipr, .030 doc.

    200 sfm, 0.004 ipr, .030 doc.
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    Just use carbide. Chances are you'll get through...

    Just use carbide. Chances are you'll get through the whole job on one edge. Worst case two or three.

    Carbide is plenty capable of hard turning. It's just not ideal for production applications.
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    Got pictures of the material? Hot rolled...

    Got pictures of the material?

    Hot rolled square bar often has radiused corners. The bigger the bar, the bigger the radius. I wouldn't be surprised if 4x4 bar had 0.125" or larger corner radii. ...
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    This can be tricker than one might think because...

    This can be tricker than one might think because there are a lot of factors at play:

    1. Z repeatability of the turret on the main side
    2. Tool wear on the main side
    3. Z repeatability of the...
  9. Replies
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    $4K seems reasonable for a lathe spindle. Live...

    $4K seems reasonable for a lathe spindle. Live toolholder rebuilds can cost $2K and up depending on the type.

    They're not making hand over fist. If spindle rebuilding were cheap, easy, and...
  10. How thick is the material? The T73 temper...

    How thick is the material?

    The T73 temper provides better corrosion resistance but lower tensile strength compared to T6.

    Thicker sections are often gummier than thinner sections due to a...
  11. Your default material choice for something like...

    Your default material choice for something like this should be 6061-T6, IMO. It's ubiquitous and has the ideal balance of properties for many applications.

    There's a reason why 6061 is so common....
  12. Replies
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    I think self driving cars will kill mass transit....

    I think self driving cars will kill mass transit. Good for America since our infrastructure is predominantly interstate highways anyway. We inadvertently made the right moves over the past few...
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    Idealistically, yes, but the reason why battery...

    Idealistically, yes, but the reason why battery prices have come down so much is because of demand from EVs, and the feasibility of grid scale storage invariably boils down to cost.

    Li-Ion...
  14. Replies
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    98,948

    From Ford's website (new Lightning pickup): ...

    From Ford's website (new Lightning pickup):

    337484

    This diagram actually only paints half the picture.

    We're seeing the beginnings of the residential microgrid. Rooftop solar charges your...
  15. Replies
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    5,013

    Well, they actually can't. At least not in the...

    Well, they actually can't. At least not in the most simplistic way that some people are portraying.

    I think this is one of those instances where a guy told another guy who told another guy who...
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    Is there some more documentation available on...

    Is there some more documentation available on that?

    I'd be curious as to how this method avoids contamination.
  17. You don't need to know G-code inside out to be...

    You don't need to know G-code inside out to be able to understand a program sufficiently to prevent a tailstock crash, or most crashes for that matter. Just the most fundamentally basic G0/G1 moves...
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    Compressed gas is explosive, and thus the safety...

    Compressed gas is explosive, and thus the safety aspect makes this whole concept a nonstarter.

    Many people have died filling up faulty aluminum (6351) scuba tanks to 2500-3000 psi. This is but a...
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    If you want to do any of this at home, you'll...

    If you want to do any of this at home, you'll still need a chemical debinder, in addition to the furnace.

    Powder Metallurgy - Sintering Temperatures for Some Common Metals

    Aluminum sinters...
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    I'd still get the TM-2P for the full enclosure,...

    I'd still get the TM-2P for the full enclosure, the user friendly control, and the crazy Haas resale value.

    We bought a TL-1 for 28K in 2012 and sold it for 27K in 2015. We basically rented a...
  21. False economy. You end up paying more for...

    False economy. You end up paying more for knockoffs.

    You might get three generics for the price of one genuine battery, but they each hold significantly less charge (Ah ratings are BS on the...
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    If that's the case, then the next step up is...

    If that's the case, then the next step up is probably the VF4. The VF3 slots in between, but the VF4 is only $3K more because it shares most of the same castings as the VF3.

    It has 50" on X, but...
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    No experience here with that machine, but a quick...

    No experience here with that machine, but a quick glance at the website and I see the sheet metal table guarding would probably need to be removed completely to run long parts.
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    This one is sweet: ...

    This one is sweet:


    https://www.youtube.com/watch?v=9peACH52KTo
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    It could help as a tiebreaker between two...

    It could help as a tiebreaker between two otherwise identical machines, but sounds about right that it wouldn't add much value. Same deal with options.

    The control replacement might make sense on...
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