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Type: Posts; User: rcoope

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  1. Replies
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    729

    One question I would put to Marcus and other EDM...

    One question I would put to Marcus and other EDM operators, is does an EDM cost money sitting idle? The ideal hobby machine, but this applies to R&D lab machines as well, doesn't mind sitting still...
  2. Waterjet the plate out, leaving .05" all around.

    Waterjet the plate out, leaving .05" all around.
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    2,689

    I'm interested about this GPA business. I just...

    I'm interested about this GPA business. I just went through 125 resumes, mostly recent grads, and almost none of them had a GPA listed. It is something we look at for co-op students through the...
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    1,566

    Pay close attention to floor load. I've been...

    Pay close attention to floor load. I've been through this and typical office floor loads here are like 50lbs/sq ft where you need like 150 lbs/sq ft or something. It's amazing how NIMBYism and...
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    2,689

    I literally made an offer for an engineering...

    I literally made an offer for an engineering position to a young graduate, that was accepted, earlier today. A couple of things jump out to me here. In any industry I know anything about, mostly...
  6. This actually looks awesome as a training tool if...

    This actually looks awesome as a training tool if you were trying to get people really comfortable with the Haas control before putting them on a proper machine (hmmm...) Haas has just the controller...
  7. If it's a heat sink couldn't you relax the .004"...

    If it's a heat sink couldn't you relax the .004" to .006" and then get a stock slit saw? Acrylic is definitely a fine choice for microfluidics (fun fact, acrylic doesn't autofluoresce) but like all...
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    1,391

    Wildly Overpriced Big Cincinnati Shaper

    CINCINNATI Horizontal Heavy Duty Shaper - business/commercial - by dealer

    265622

    I thought I'd put this here so people could laugh, shake their heads, or maybe call the vendor and just yell at...
  9. Can you say anything about quantity and surface...

    Can you say anything about quantity and surface finish? For a smaller run you could mill them or potentially use a slit saw. I see McMaster has slit saws down to .006" thickness so you'd have to see...
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    5,529

    Someone mentioned above that tungsten is really...

    Someone mentioned above that tungsten is really expensive, which it is, (I had a quote of $18K for 12"x12"x1") but that therefore the chips would be worth something. I have several hundred pounds of...
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    6,142

    This is a great post by the OP. You read the...

    This is a great post by the OP. You read the title and you're like, "Oh dear heavens it's gonna be a guy trying to make a massive part on the wrong machine, like a Bridgeport mill or something, and...
  12. I had this problem in Vancouver BC with 12'x5'...

    I had this problem in Vancouver BC with 12'x5' parts as all the lasers here are apparently only 10' long. I ended up getting waterjet shop to do it as they had a big table, so keep that in mind if...
  13. Thread: Need help

    by rcoope
    Replies
    28
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    1,836

    Thor, the thing is your Soldiworks parameters...

    Thor, the thing is your Soldiworks parameters always need to reflect the press brake that is actually going to get used for the job whether its at your shop or someone else's. We have a waterjet and...
  14. Thread: Need help

    by rcoope
    Replies
    28
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    1,836

    Thor, have you established that you have the...

    Thor, have you established that you have the correct bend radius and K-factor or Bend Deduction in Solidworks such that if you bend a U-shape for example you get exactly the width and leg length you...
  15. Like Kustomizingkid and others have said, please...

    Like Kustomizingkid and others have said, please send this out! What you want to do is find a good laser/CNC Press shop, and there are many of them. Ideally you can find out what bend radii and...
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    3,092

    I could do it and any other competent waterjet...

    I could do it and any other competent waterjet operator could too. The trick is to find a shop where they can think on their feet in front of the machine as there seem to be a lot of fabrication...
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    3,092

    I just designed it in OMAX Layout as a 3x9 array...

    I just designed it in OMAX Layout as a 3x9 array of the slots on a .75"x 3" spacing, with full .1875" radii at the slot ends, and in a 10"x7" plate. For mild steel at 45000psi it comes out very close...
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    We had a 2007 TM-2 which got traded in for a VM-3...

    We had a 2007 TM-2 which got traded in for a VM-3 last year. It's a very fine machine for what it's supposed to do. One thing I think you get with the TM-2P is an enclosure, which you definitely...
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    Where I come from (research machine shops...

    Where I come from (research machine shops established by post-war European emigres where lightly used tools can hang around for a REALLY long time) they'd always have two sets of HSS drills, one for...
  20. In my experience 304 and 316 behave basically the...

    In my experience 304 and 316 behave basically the same and are both great materials to bend.
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    I was going to say you should seriously look at a...

    I was going to say you should seriously look at a CNC lathe with a good conversational control. Once you've made a couple of parts on, say, a TL-1 in my case, you cannot go back. And not only is CNC...
  22. Good approach TRBoatworks and I just had to pop...

    Good approach TRBoatworks and I just had to pop in to point out my favorite Vancouver area shop, KSM Fabricators, once made me 12' long bends in 12 Ga mild steel on their 10'
    press brake and you...
  23. It's fun to casually, but with unmistakable...

    It's fun to casually, but with unmistakable passion in your voice, explain to non mechanical people that there's this company McMaster-Carr that's been around since 1905 and blows Amazon out of the...
  24. Great job mayah. As my university shop teacher...

    Great job mayah. As my university shop teacher used to say, (imagine in a sort of Dutch/Canadian accent) "There's a right vey, and a wrong vey" I think you did it the right way. Also thanks for...
  25. Thanks for the thoughts. Upon reflection I do...

    Thanks for the thoughts. Upon reflection I do think a pro-vacuum bias had crept into the shop over the years and possibly also a perception that Delrin was expensive. Which it might have been at one...
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