13 Years Factory wholesale STEEL DISC for France Manufacturer

Nothing much happens in this video but you get to see how to set up a Mini-Lathe to turn plastic rod (Teflon) to a precise diameter. In this case, the rod started out as 3/4″ nominal, and I turned it to .736 ± .0005″ over its 3 ft length. The idea is that the rod is fed through an ER-32 collet (3/4″) at a precise rate. I made an add-on assembly that supplies feed pressure. A rotating threaded rod propels a foot that pushes against a feedrod which pushes the workpiece. Rotation is supplied by a 12V windshield wiper gearmotor with a pulley epoxied to it. The trick is to get the collet tight enough to grip the workpiece so the mini-lathe can rotate it for turning, but not so tight that the workpiece can’t slip through it as the feedrod pushes against it. The more consistent you can get the collet tightening every time, the more precise the turn will be rod after rod. Once you get the diameter set, you lock down the cross slide gibs and lock down the carriage and just do rod after rod. For the turning tool, don’t use anything made for metal, the angles are all wrong. You want plenty of rake on all sides of the tool, especially the front, where you want plenty of “bite”. And sharpen the tool knife sharp so the swarf comes off like peeling a potato. The top rake determines which way the swarf goes. If you set it up right, the swarf comes off in a string which drops itself to the floor. The workpiece is supported by a 3 bearing type steady rest. The video finishes up with a short clip that shows one of the travel limit switches that stop the motor just before the end of the workpiece pops out of the collet. The black switch allows me to reverse the motor to draw the foot back so I can start over. Thanks to Bobby Hill Machining of Redway, CA for the idea.

Best Drill Bits For Metal, Stainless Steel and Hardened Steel. Having a hard time finding the correct drill bit for the kind of steel you need to drill. You have found the right video to watch. I will explain it all from HSS (high speed steel), Cobalt Drill Bit, Carbide Drill Bit, Massonry Drill Bit, Locksmith Drill Bit.
The Ultimate Guide To Drill Bits, Cobalt, HSS, Carbide, How to chose the best drill bit for Stainless steel, Hardened steel,
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This is The Ultimate Guide To Drill Bits. Putting HSS (High Speed Steel), Cobalt, Carbide tipped and solid Carbide drill bits to the test. Yes It’s long but Compared to the Year + it took to gather the information it’s not that bad. So Sit Back and learn or keep wasting your money on junk, trash bits that keep breaking and not drilling through what you want them to.

RHC – Rockwell Hardness C

HSS Drill Bits – Work well up to the 50ish RHC
Drill – Mild steel, Some tool steel, Some Spring Steel
No Drill – Hard Plate, Anti Drill Plate, 404c Stainless Steel
Pro – Good in Hand Drills and most drilling applications
Con – Has limitations in hardened steels

Cobalt – Works up to 58ish RHC
Drill – Mild Steel, Some Spring Steel, Some Tool Steel
No Drill – Hard Plate, Anti Drill Plate, 440C Stainless Steel
Pro – Good for hand drills and most drilling applications
Con – Has limits with hardened steel

Carbide Tipped – Will drill almost any steel, Hard, Stainless or Mild.
Pro – Drills all steel
Con- Blunt tip requires extreme pressure to produce cuttings. Drill bit is hard to start on all steels.

Diamond Coated Drill Bit – Cuts on most steels(Not Hard Plate) just not for long.
Pro – Will Drill most steels (Not Hard Plate)
Con – Cutting stops quickly after diamond grit has warn off, Then behaves like HSS bit

Solid Carbide Drill Bit – Cuts all steels.
Pro – Sharpened points wont “walk” like carbide tipped bit. Cuts all steel
Con – Sharp tip and fine edges can chip easily and ruin drill bit. Not for hand drills. Expensive!

For more information go to www.Tricountylocksmithservice.com
Drill bits purchased from www.drillbitwarehouse.com Discount Code – lockman1