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Testing a Mill motor
New switch was wired wrong! Duhho!- Metalismo
- Post #6
- Forum: Bridgeport / Hardinge and USA Light Iron
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Testing a 3 phase mill motor
We have a Bridgeport copy (Jet) mill that stopping rotating the opposite direction so we bought a new switch thinking the switch was bad. New switch is in and the motor still only comes on in one direction and now it pops the breaker when the switch is thrown the opposite way. Is it a bad motor... -
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Testing a Mill motor
The motor is labeled 3 phase.- Metalismo
- Post #3
- Forum: Bridgeport / Hardinge and USA Light Iron
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Testing a Mill motor
We have a Bridgeport copy (Jet) mill that stopping rotating the opposite direction so we bought a new switch thinking the switch was bad. New switch is in and the motor still only comes on in one direction and now it pops the breaker when the switch is thrown the opposite way. Is it a bad...- Metalismo
- Thread
- Replies: 6
- Forum: Bridgeport / Hardinge and USA Light Iron
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Apprenticeships expansion in the UK
If given to choice to hire/work with someone that finished an apprenticeship as opposed to someone that just had OTJ experience I wouldn’t even have to think about it. Problem with the market mindset is the inability to see future needs instead of maximizing profit for the coming quarter. The...- Metalismo
- Post #5
- Forum: Manufacturing in America and Europe
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Workholding Tips and Tricks?
I wish I had a photo of all the interesting set-ups I've seen over the years. I’m always amazed when someone finds a simple way to hold something that I thought couldn’t be held. I'll through some of my old books tonight. -
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Groove to Jaw alignment on Kurts? Good? Perfect?
I would first machine a flat surface on the cast end of the both vises within .001 and parallel to your solid jaw. Then you can push the vises up against two 5/8 dowel pins that you have in the slots of your machine or sub-plate. I don't like to use the T-slots to align things. They tend to... -
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Ugly paint on machine tools...again
Looks like a case of "you use what you've got at the time" I'm sure most everyone here has made do with what's on hand instead of running down and buying. -
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Withdraw-able turning tool adapter for Aloris type toolpost.
Find a toolroom lathe (Hardinge or asian copy) and single point alot of the same threads on it. Then you'll see the need. Monkeying around with the cross slide everytime takes time and in the novices hand invites diasters. -
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Withdraw-able turning tool adapter for Aloris type toolpost.
Looks like a great project that will pay back in time saved. I love that lever on the little tool room lathes! If you make your eccentric so it rotates past center just a bit then the forces of cutting can't move it out. Now why didn't I think of that!? -
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Tap Identification?
What are you useing it for? Did you just find it in a box of old cutters? I looked in the Machinery's Handbook and nothing comes close. Pitch that thing in the trash! -
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Hand Cleaner
Gloves and machines with spinging tools...never the two should meet! Cover the handles with one finger of a cotton glove or again barrier creams work well. -
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OSHA regs for gloves while machining?
Never EVER use gloves when running machinery! The only time the gloves should be on your hands is to handle material! Just thinking about what would happen should a glove get sucked into a rotating cutter/part/drill makes my stomach turn! -
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Machining Quartz
Ok all. I tried with the grinding wheels I have and no dice! This stuff is hard! .062 of down feed and I only cut into the quartz .025. Couldn't hold the width of .020. Ended up .035/.040. Who can do this work for us? Hopefully somewere around the southwest. Much thanks for all the... -
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Suggestions on reasonable quality drill bits
Spend the money on a good set like Precision Brand in a bright finish and make sure the index is a Huot. All other indexes get bent and stop opening and closing right. Put your drills back in the index when your done. I can't stand wasting time diging through a box/bin that is full of drills... -
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Just put the first divot in the Bridgeport table...
I was taught to only use the powerfeed when boring. The reason was, the gears that drive the spindle down aren't made to handle the loads of drilling and reaming. What's the call? -
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Machining Quartz
Today I was asked if I could machine a slot in a pure quartz slide that is .019/.020 wide and .062 deep running across the height/width of .590. Anyone ever tried this? It's for our Single Molecule Biophysics Lab at our Biodesign Institute here on campus. -
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Pipe Tapping Aluminum
If your talking about aluminum tooling plate then it's not the same as 6061. I think what your using is like a cast aluminum that is then Blanchard ground. It hasn’t been cold worked like 6061 so the grains in the material aren’t structurally sound. I may be wrong. Sounds like your only hope...