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Type: Posts; User: Mike C.

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  1. Replies
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    593

    The thumb in suspender expertise on this thread...

    The thumb in suspender expertise on this thread is hilarious. I work in a pump/motor rewind shop that specializes in submersible pumps, and, except a short 3yr stint in a jydraulic shop, have for...
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    180

    Sounds like a loose setscrew, sheared pin, or...

    Sounds like a loose setscrew, sheared pin, or broken fork. I'd have a look inside.
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    734

    You're going to have to go old school and figure...

    You're going to have to go old school and figure this the hard way. Measure the leadscrew pitch and then figure what gear combination is going to make up 20tpi. Good luck. Looks as bad as the Summit...
  4. The far-easters, in their infinte wisdom, put an...

    The far-easters, in their infinte wisdom, put an open ended fan cooled motor on my unmentionable brand 9x20. The fan slots set almost exactly in line with the chuck on the back side. After taking it...
  5. Gently drag your hand in the handwheel to prevent...

    Gently drag your hand in the handwheel to prevent the carriage wandering on the leadscrew.
  6. Watching this one. Bridge holes in one of my...

    Watching this one. Bridge holes in one of my guitars are too loose and I just can't give Stewmac $100 for a reamer to plug and recut.
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    506

    Treat it like 4340 and it should be great, unless...

    Treat it like 4340 and it should be great, unless an unscrupulous supplier has sent you 304, instead (cheaper, but a BITCH to work, by comparison).
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    In the aviation world, common method on floats...

    In the aviation world, common method on floats was to use a two part flexible fuel tank sealer compound... sort of a cross between an RTV and an epoxy. Can't remember the brand name. Was 20yrs ago...
  9. 90 degree angle die grinder with sanding pads....

    90 degree angle die grinder with sanding pads. Works surprisingly quick, even on induction hardened chrome rods.
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    Problem is it's 304. If it's 316, that won't...

    Problem is it's 304. If it's 316, that won't happen. 304 is kinda, sorta stainless.
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    Agree with both the above, I'll also add that...

    Agree with both the above, I'll also add that some of the old books say to only chip with a chisel or file for prep, grinding smears graphite. Get a can of powdered flux (you can occasionally catch...
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    868

    Nope, a 20mm tap has a 15mm shank. It will not go...

    Nope, a 20mm tap has a 15mm shank. It will not go in a 3/4" driver. I have most every tap driver over 1/2" and nothing fit the 20mm. A 19mm tap fits a 3/4 and a 22mm fits a 7/8".
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    Any of the typical degreasing products contain...

    Any of the typical degreasing products contain sodium hydroxide (lye), which is very corrosive to alumimum. About the equivalent of saltwater to steel. Switch to a simple soap and water cleaning and...
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    Thanks, JS! Nailed it. I can sleeve it to 4MT....

    Thanks, JS! Nailed it. I can sleeve it to 4MT. Hand tapping 16 holes was a real party yesterday... and of course it's a rush job.
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    Another option to make a pattern lathe work...

    Another option to make a pattern lathe work better is live tooling on the carriage. Helped a friend repair some VERY coarse threaded wood table legs. We tried a razor sharp thread cutter in my old...
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    868

    20mm tap driver 4MT Unobtanium?

    Had a 16 hole bolt circle to drill and tap on the radial drill this week. Apparently nobody on this planet makes a Morse Taper 4 tap driver for a 20x2.5 tap?
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    3,648

    Set up to press and forget the heat. You are...

    Set up to press and forget the heat. You are never going to heat fit a 17mm bearing. Heating to 250° F is only going to give you 0.001" expansion if the shaft is at 0° F. There's not enough expansion...
  18. The star wheel type cone feed clutches are also...

    The star wheel type cone feed clutches are also prone to sticking. It's now instinct to slap the star wheel as quickly as it's released to totally stop the feed, lol.
  19. My bet is that it's adjusted too tight or just...

    My bet is that it's adjusted too tight or just stuck from sitting. Loosen it off a touch and see if it releases before tearing too deep into it.
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    Talking with Bob Gilliland, one of the A-12/SR-71...

    Talking with Bob Gilliland, one of the A-12/SR-71 test pilots, there was also an altitude version of that exchange... sort of. He was somewhere out west cruising along on the way back in and hit up...
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    "I also just bought a set of left handed drill...

    "I also just bought a set of left handed drill bits off Amazon. The "Drill Hog" brand set 1/16-1/2" HI-Molybdenum M7 Steel. McMaster only carried down to 5/64" (1.984mm). This is a method I will try...
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    Something not mentioned yet is that the spiral...

    Something not mentioned yet is that the spiral Ezeouts are pretty useless. They generally just tend to wedge the screw tighter in the threads. Left hand drill and straight square Ezeout will do the...
  23. Definitely break the corner of the cup. Sounds...

    Definitely break the corner of the cup. Sounds like your fit is too tight. Follow the specs for the application and material being used in the SKF bearing book, pretty sure it's available on their...
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    Careful with the shop vac if you are running...

    Careful with the shop vac if you are running carbide. Very easy to melt a hole in the hose and/or start a fire inside the vac. Sheet metal deflectors mounted to table clamp bolts can work pretty...
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    12" Shaper vise in AL

    Heads up for anybody that might need one, saw a listing for a vise on Facebook Marketplace. Definitely a shaper vise and big. Not a vise for a 12" shaper, but a 12" vise! Probably off a 16" shaper....
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