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Type: Posts; User: martin_05

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    I'll look into this. I need to make a few parts...

    I'll look into this. I need to make a few parts for prototyping, followed by a mid-quantity run and then a large quantity. I can't go for custom tooling until our client commits to the larger...
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    I didn't talk to these guys. I'm in Los Angeles....

    I didn't talk to these guys. I'm in Los Angeles. Vegas would be OK. We can drive there and pick-up the parts to avoid crazy shipping costs.
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    Interesting. I didn't think of variable geometry...

    Interesting. I didn't think of variable geometry tooling. I'll look into it. At those prices getting 50 parts per tool would be just fine in my book.

    Thanks.
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    How would a punch press support the bottom of the...

    How would a punch press support the bottom of the cut in a pipe? We do a bunch of sheet metal work. Our vendor has CNC punch presses, but I think it will only handle flat stock. The negative side...
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    I did. The quote I got was insanely high. Maybe...

    I did. The quote I got was insanely high. Maybe they are trying to amortize their laser tube cutter quickly...or, perhaps, they charge a lot just to avoid being in competition with raw metal...
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    Yeah, I cut a few pieces today. The machine was...

    Yeah, I cut a few pieces today. The machine was singing. I played with RPMs to try to mitigate but there really doesn't seem to be a simple formula to make this happen without lots of...
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    Burrs are not a problem at all. This is part of...

    Burrs are not a problem at all. This is part of an assembly that will be welded. Any burrs will just melt into the bead.

    Drilling the corners is probably the best idea. I don't need to center...
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    Going fast on mild steel tubing

    I have this project where we would have to make a few hundred parts that look like this:

    322947

    This is mild steel tubing, 2 x 2x 0.120. I also have some parts that are made from 0.060 tubing....
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    Thanks for all the input. I got creative and...

    Thanks for all the input.

    I got creative and struck an interesting bargain with our customer. We are going to weld-up the prototypes out of mild steel using the equipment we have. We feel we can...
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    I watched a bunch of his stuff. That's a good...

    I watched a bunch of his stuff. That's a good channel.
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    Nope. It's the result of making a list from...

    Nope.

    It's the result of making a list from watching real guys with experience talk about the technology on YouTube. It just so happens that the list I extracted from half a dozen of these...
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    OK, this prompted me to do some research. A few...

    OK, this prompted me to do some research. A few interesting points I learned:


    Inverter machines are about 93% efficient, vs about 60% for transformer
    This translates directly to power and...
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    That's an interesting point. Our machines are...

    That's an interesting point. Our machines are older (15~20 years old). I was talking to a friend with far more welding experience than I have who said that the new 220V inverter machines are a...
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    Unnecessary harshness brother. I get it though. ...

    Unnecessary harshness brother. I get it though. Nothing more fun than to stomping on someone learning the ropes. Hope it was worth a good laugh.

    As it turns out laser welding technology is...
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    Thanks for your excellent feedback on this. It...

    Thanks for your excellent feedback on this. It sure sound like far more than I would want to undertake at the moment for this project. Not having a high power laser "culture" at the shop right now...
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    Ah, yes, but what's the compromise?

    Ah, yes, but what's the compromise?
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    Reading between the lines...I think the welder...

    Reading between the lines...I think the welder detects contact with the workpiece through the grounding circuit. In their videos they say that the tip has to be in contact with the workpiece or the...
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    Slower than MIG?

    Slower than MIG?
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    Nothing official. The word seems to be that the...

    Nothing official. The word seems to be that the handheld system is about $25K.
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    A couple of prototypes. If it all works out,...

    A couple of prototypes. If it all works out, more. At that stage we are likely to work with an outside shop (maybe).

    Yeah, MIG is looking like the ticket.
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    Engineering and prototype fabrication for various...

    Engineering and prototype fabrication for various domains, from aerospace to commercial. Definitely not a production shop. We have Haas and Bridgeport mills and Miller MIG welders (older ones that...
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    Yup, zero experience with laser welding. I would...

    Yup, zero experience with laser welding. I would definitely want to try it before making a decision.
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    Yes, that sounds tempting. While I have a Miller...

    Yes, that sounds tempting. While I have a Miller MIG welder already, it's an older one (~20 years), which means I would have to buy a new machine. I don't necessarily mind but I thought I should do...
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    Laser welder vs. TIG welder

    I have a project that requires a fair bit of welding. Aluminum on aluminum. wall thicknesses from 1/8 in to 1/4 in. See image below (roughly 4 x 8 ft).

    I have to buy a welder for this job. I...
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    That is always one of my first thoughts. I have...

    That is always one of my first thoughts. I have to control myself thought. Robotics is one of the things I do...so...lots of high power servos, electronics and all the necessary hardware mostly on...
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