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Type: Posts; User: Bob La Londe

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  1. Replies
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    Re: MRR 4140HT (PH)

    I'm starting to really like that Accupro 4 Flute AlTiN coated rougher. Its not an expensive tool (its not super cheap) but it does a decent job and provides a pretty good finish for a corn cob.
    ...
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    Re: MRR 4140HT (PH)

    I posted a short video clip of the cut here. That slight surging sound in the video was not audible in person.
    https://www.facebook.com/100000441826720/videos/pcb.814524312419186/3565564816801544...
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    Re: MRR 4140HT (PH)

    Good thing for autosaved content, or that last post would have been lost.

    Forgot two tool parameters in the previous post. 0.875" stick out and 0.500" flute length.

    I went back to make the...
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    Re: MRR 4140HT (PH)

    Been busy. Sorry I have not gotten back to you guys on this. I was just modifying a screwless vise (grinder vise) for use on one of my smaller machines.

    Using a totally unscientific hardness...
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    Re: MRR 4140HT (PH)

    X axis is direct drive. Almost has to be a catastrophic ball nut failure. Could be a bearing or the coupler, but not likely as bad as it is. It went from about the normal .001 backlash to over...
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    For shallow slotting I don't need as much air but...

    For shallow slotting I don't need as much air but for deep pocketing or deep slotting I turn the air up more or rather open the valve up more.
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    I didn't bother to get fancy with mine because I...

    I didn't bother to get fancy with mine because I don't cut all that much steel. just every once in awhile. I turn it on and turn it off by hand. I use a little ball valve to control the flow rate and...
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    Roll your own is pretty easy. A regulator, a...

    Roll your own is pretty easy. A regulator, a manual valve for adjustment, and if you want to machine control it a solenoid valve. Then you could just flip a switch to switch between air blast and...
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    Re: MRR 4140HT (PH)

    The Tormach flood coolant system may not be enough for carbide milling in steel. Its a split camp at all. If you read the guys over at Practical Machinist some say, "Oh we run flood on carbide in...
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    that could be an issue, but if he's using...

    that could be an issue, but if he's using something like fswizard or hsmadvisor tool stick out is one of the parameters that you enter.

    I would be curious to know what you use to clear chips and...
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    Re: Aluminum cleaning

    Depending on the parts load there is a relatively inexpensive countertop residential dishwasher available. Set anywhere you have a sink and a countertop.
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    Re: MRR 4140HT (PH)

    Almost forget. My 3/8 4 flute AlTin coated roughers arrived yesterday. Hopefully I'll have some time to push one to failure and have some results to report back.
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    Re: MRR 4140HT (PH)

    Aluminum is pretty easy once you have found your way of eliminating chip welding. 5 Cu^3 is about 1.3 HP.

    Really your material removal rate in aluminum is limited by machine speed, horsepower,...
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    Re: MRR 4140HT (PH)

    Yeah, I bought into the 5/6 flute hype a while back, but I found that as long as my cuts are reasonable i get a lot better results with 4 flute. I think I posted some video about slotting with a 1/4...
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    Re: MRR 4140HT (PH)

    I have to admit that I've found a 1/4 inch end mill to be my happy place for a lot of nice work.

    I'm just looking at MRR in 4140 for one project. I ordered some 3/8 coated roughers to play with. ...
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    A G0704 is certainly a lightweight , but a 2...

    A G0704 is certainly a lightweight
    , but a 2 horsepower spindle overpowers the Tormach 1100. I honestly don't think you could use two horsepower on that machine effectively. The only benefit I...
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    Re: MRR 4140HT (PH)

    I was just reviewing an old video (2 actually) on cutting 4140 on the 1100 by John Saunders (NYCCNC) on YouTube. He used a 1/4" endmill for the entire test and according to his spreadhseet he maxed...
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    Re: CamBam website

    Its back up guys.
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    MRR 4140HT (PH)

    I've got quite a bit of 4140HT left over from a customer project making some press dies a few years ago. I've been using it periodically for various projects. Its decent, strong, modestly hard...
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    I think Tim Olson was the original developer. I...

    I think Tim Olson was the original developer. I don't know how much influence he has over what Encore/Punch does on a day-to-day basis.

    As of this morning the forum was back up. I even had...
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    Re: Punch Forum Down 7-9-2020

    You think they might have just shut it down?
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    Punch Forum Down 7-9-2020

    Error 522

    Just double checked through a TOR connection also in case I was blocked for being critical of V12 having broken features.

    Nope its not working.
  23. Thread: 24R ???

    by Bob La Londe
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    24R ???

    Any real work with real users yet?

    Any videos doing real work yet?
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    Re: Hurco KMB1 upgrade

    Oh? Wow! I'm so sorry to hear that you had to let the machine go.

    I had at one time about decided to scrap mine out and started selling off tool holders. Then I changed my mind and fixed it. ...
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    Lakeshore - AluPower - AlumaCut

    I never used Lakeshore except for one roundover mill that only they make at an only slightly exhorbitant price. (almost $100) I mention them because another thread in this section of the forum...
  26. Re: HF 8x14 linear rail conversion....and maybe more...

    This is one of those threads I've beren following and looking forward to seeing it run. While not as long in running as the Z2 thread its been a long time coming. Nice to see some progress.
    ...
  27. Re: Super Fly (Mostly Good) but doesn't plunge well.

    There are TTS arbors that fit shell and face mills.

    Eating horsepower is an issue. The 1100 is a decent "benchtop" mlll but its still in that class. At the top end, but its not as rigid as a...
  28. Re: Super Fly (Mostly Good) but doesn't plunge well.

    I do have a 1" 2 flute with a 3/4 shank I use for steel with the coated inserts. I had not even thought of using it with uncoated for aluminum. I guess its worth a shot.
  29. Re: Super Fly (Mostly Good) but doesn't plunge well.

    That is a valid thought. I have considered that, but I have several recipes worked up for it using the current diameter. I click the geometry, select the operation I need, and CAM is finished. ...
  30. Re: Super Fly (Mostly Good) but doesn't plunge well.

    Interestingly... when I set up the Tormach I took my time and leveled it, but started cutting immediately. I never checked tram, just noted that it seemed to be good enough. A few weeks ago I was...
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