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Recent content by kb0thn

  1. K

    Advice on annular cutter for 3" hole please

    I've had pretty good luck with the China / Amazon HSS cutters. Here is one from a brand I have used: https://www.amazon.com/Accusize-Tools-Annular-Cutters-Standard/dp/B00PYHHOI0 I think they are pretty forgiving. Even if you break a tooth off you can keep going if you baby it. We do almost...
  2. K

    Where can I rent a pickup that allows more than 10000# trailer towing?

    The legality of hauling any trailer over 10k lbs with your class d license is pretty clear. It's not. But there's a whole lot of them on the road every day. As I see it (and treat it), it's a matter of risk. If you are able to tolerate the risk of not having a CDL, then towing over the 10k...
  3. K

    Clutched Tap Collets GT12 vs GT24 vs TC820, use on Lathe?

    The tapping arm collets are just like a cordless drill. Ball bearings between plates with springs or something. I don't see why they wouldn't work on a lathe if you had a tension compression type holder to let them float in and out as well if you are driving the turret out of sync with what it...
  4. K

    OT Does this roofing conpany sound like a scam?

    Around here at least, you can't get a roofing company that isn't doing the storm damage claim. I have multiple roofs that are just worn out but I can't find a contractor that will do them. The fly-by-night quoted without setting foot on site places are 2x or 3x what the job should be. And I've...
  5. K

    Why do they want thousands for a heat shrink tool machine?

    I have a proper machine and all of my holders are discolored. But even discolored, they make smoother parts than most of my non shrink fit holders. Should I be on pins and needles that my shrink fit holder is going to explode? Will it explode in the machine or is it going to take out a wall of...
  6. K

    Pneumatic Vs Hydraulic Press Brake

    You are going to have to get to be good to be able to replicate what a modern press brake can do. And parts longer than 4' is going to be another big hurdle. Tonnage gets used up quickly on long parts. Crowning becomes a huge issue. Finding a different vendor who can form your 4'+ long parts...
  7. K

    Using MDF trim to test CNC programs

    When I was just getting started I used PVC bar stock or HDPE flat sheet to test things out. Plastics have come up a lot in price and aluminum is probably cheaper now. As your skills mature you start to get comfortable with pressing the button on more expensive stock and knowing you are likely to...
  8. K

    Why do they want thousands for a heat shrink tool machine?

    I used MAPP torches for a while and they shrink in tools fine. They aren't fantastic for getting tools out. I had a run for a while where I used shrink fit 1/2" holders for HSSCo spot drills. I never got one of those out with the MAPP torch but they all come out fine with the Techniks induction...
  9. K

    The Flow vs Omax debate. Has it been settled? What has changed recently, if anything?

    The comment about waterjet using less electricity than laser seems interesting to me. I have a 3kW fiber laser. It's not the latest and greatest, but technology on it (IPS power source, modern servo drives, modern PC and NC controls) is similar to most fiber laser. It's on a 100 amp 208V...
  10. K

    Why do they want thousands for a heat shrink tool machine?

    I have one of these machines: https://www.ebay.com/itm/323729350250 Last fall they were listed at $6,800 on the ebay listing and I got my local distributor to match. There's definitely a bit more to them than an just an induction coil. They do do a better job that the mapp gas torch I tried...
  11. K

    Pneumatic Vs Hydraulic Press Brake

    Maybe I did myself a favor when I put a VFD on mine. It stalled the pump / VFD when it was grossly overloaded.
  12. K

    OT, pneumatic cylinders, chrome vs nitride? Your experience?

    Sorry, I missed barrels. I was thinking rods. Whoops!
  13. K

    OT, pneumatic cylinders, chrome vs nitride? Your experience?

    Induction Hardened Chrome Plated (IHCP) is pretty much the standard for hydraulic cylinders. FWIW
  14. K

    Pneumatic Vs Hydraulic Press Brake

    The Diacro he has is "hydro mechanical". It is a hydraulic rotary motor that drives a cam. There are threaded linkages on the "rams" that set the depth. So it's going to be very similar in accuracy to a mechanical press brake.
  15. K

    Small bridge crane options

    Purple is the bridge beam weldment. Purple plate (of which there is another one on the back side of this view and then obviously two on the other side) are 1/2" steel welded to the bridge beam. There is about 1/8" clearance between the bridge beam and the yellow rails that are attached to the...
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