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    Designing production machine: need air activated something to grab 8-32 screws

    I don't know if any of you know the backstory, but Lee Marshall (Oldster) invented the original saws as a retirement project. He and I knew each other from his jewelry tool line. I moved up to the bay area after I got married, and agreed to help him out for a couple of weeks as a machinist...
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    Designing production machine: need air activated something to grab 8-32 screws

    That's more-or-less what we're doing now. Not flat enough, unfortunately. Or at least testing has discovered that grinding the tips down 0.020-0.030" widens out the contact patch enough to make a difference in grab strength. The real problem here is that we're in a race between the strength...
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    Designing production machine: need air activated something to grab 8-32 screws

    Yeah, that's about right. Bit low, if memory serves from last year's numbers. Each saw only uses 4 (of these) screws. 2x half inch, 2x .188. So roughly 20K of each size per year is what I'm ballparking on. If I can keep up with that, I should be good. I've tried dog points, but they're not...
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    Designing production machine: need air activated something to grab 8-32 screws

    HI guys, They're Gd8 set screws, and there's no real length tolerance. We're taking about .020" off the tips, to get the tips dead flat, widen the contact area, and get the oxide coating off. (They end up going head-to-head with each other as part of a clamp to grab jeweler's saw blades.) (We...
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    Designing production machine: need air activated something to grab 8-32 screws

    Before anybody suggests it, yes, I've had custom screw houses make these things for me. (Several of them) We're currently talking 8 month or longer lead times, not-entirely flat tips, and the last batch didn't even pass an 8-32 thread gauge. (After 6-8 month wait.) These are mission critical...
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    Designing production machine: need air activated something to grab 8-32 screws

    HI guys, So I'm ponderating making a custom machine to increase (or ease) our production. What it needs to do is grab an 8-32 screw, and hold it still while the end is ground. They come in two lengths: 0.500" and 0.188". And they come by the thousand... My thought is to come up with something...
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    Hiring new workers and pay scale of current workers, what options are there?

    I've had trouble with just exactly this issue: insane starting pay requirements for new hires. So I've started bumping up my long timers at the same time, to make sure they stay above what the new kids are getting. Costs more (now) but it keeps my long timers (and their knowledge) around. So...
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    1978 Mori Seiki MS-850 brake caliper and master cylinder equivalents?

    Update: The aftermarket brake pistons where I'd ground down the pins were junked, so before I trashed them, I scavenged the seals. Then in an exercise in sheer bloody minded curiosity, I cut the piston open to see just what the hell was actually inside that hole, grabbing on to the retractor...
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    Haimer 3D Probe Tip : making new ones ??

    I'm with the 'buy one on ebay' crowd. Think about it: if you screw up even a little, the accuracy of the Haimer is shot. And what's the point of having a Haimer if you can't trust it? Also: you can't make the probes different lengths. They have to be *exactly* the proper length, combined with...
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    1978 Mori Seiki MS-850 brake caliper and master cylinder equivalents?

    Well, I wish I'd checked this thread a week ago... Update: Ross is right: the center spike is the retractor. I found what had to have been the very last set of original, 50 year old Sumitomo (Dunlop) Mk 21B pistons that were NOS. Never installed, and in...decent shape. Slapped those in...
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    WTS Burgmaster Drill Press parts , doall optical flat , sta put drill press clamp

    I'll take the Burgie parts. PM incoming. -Brian
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    1978 Mori Seiki MS-850 brake caliper and master cylinder equivalents?

    Update: Never bet against the house. In this case, it was a safe bet though. I didn't cut the pins, I just ground them down a few thou. (Started out as a jeweler. Had the gear to grind them down in about 30 seconds each. Took longer to clean the crap out of the bore than to actually grind...
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    1978 Mori Seiki MS-850 brake caliper and master cylinder equivalents?

    Update: I pulled the brakes again, to work on them on the bench. Noticed that one piston was less retracted than the other, so I pulled that one apart. Here are some pictures of it in pieces. You can see the spike up the middle. Just to test, I pushed it back together. Or didn't. It gets...
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    1978 Mori Seiki MS-850 brake caliper and master cylinder equivalents?

    Greetings all, Yeah, the switch is on order. It'll take a couple of days to get here, but it wasn't any big deal. Just annoyed me. I'm a strong believer in the school of thought that says that if you need a hammer, you misunderstsood something. So I *really* looked at the pistons before I...
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    1978 Mori Seiki MS-850 brake caliper and master cylinder equivalents?

    Really? Please speak more of this. I know jack about cars. Give me a 100 year old machine tool I've never *seen* before, and I can have it humming before quitting time. Cars? Hopeless. It was sold as the correct master cylinder for that unit, and the unit itself is a disk brake system, so...
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    1978 Mori Seiki MS-850 brake caliper and master cylinder equivalents?

    Update: It ain't the pushrod. I tried bleeding the brakes with a set of .030" shims stuck between the pads and the disk. Yanked them, pumped the brakes, and.... Dragging. Again. In a fit of frustration, I yanked the master cylinder (but left the line connected), and pulled the pushrod...
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    1978 Mori Seiki MS-850 brake caliper and master cylinder equivalents?

    Update: I thought I'd logic'd my way to an answer. I was wrong. I thought about it while I was driving home last night, and I came to the conclusion that I'd just been bleeding the brakes wrong. I'm bleeding into a soda bottle, using the old hose trick. So I was closing the bleed valve with...
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    1978 Mori Seiki MS-850 brake caliper and master cylinder equivalents?

    Well. That didn't work. I tried adding a bit of air. No dice. The dragging got a smidge worse. (I think. Hard to hear with the compressors and CNC's going.) So I pulled the pushrod, and used the comparator to figure the profile differences between the old (short) pushrod, and the one that...
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    1978 Mori Seiki MS-850 brake caliper and master cylinder equivalents?

    HI All, I'll try Joe's trick about adding a bit of air on Monday or Tuesday. Cheap and easy, can't hurt. If that fails, I'll yank the push rod and really get serious about comparing it with the one that came with the master cylinder. (I >>>hope<<< I didn't trash that one yet.... I was...
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    1978 Mori Seiki MS-850 brake caliper and master cylinder equivalents?

    OK, thanks. That makes sense. It's getting plenty of fluid out of the tank. When I bled the brakes, it sucked down most of a whole reservoir's worth in about 6 pumps. So it's getting fluid. I think the next step is to mill of about .020" off the pads to see if the extra clearance helps...

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