Hss Drill Bit

Machining question, boring a small hole on a metal lathe?

I want to bore/drill a hole slightly less than 1/8″ in diameter into aluminum about 2″ deep, straight-through. What is the best cutting tool I would need to use and what is it called? I’m concerned that a standard HSS drill bit would wander and have a tendency to snap since I had that problem on a drill press…

The key here is to ensure your tooling is sharp, your tail-stock is in good condition and on centre and that your lathe can reach a high speed. Start by using a small centre drill to give your drill a starting point. Then change to your standard drill. Make sure the flutes on the drill will allow the hole to be made without being covered. If not, you will have to “peck” at the hole, i.e. Drill a bit, clear the drill then drill another bit. Be GENTLE! this is a relatively small drill, and it is unlikely that your machine will give you the normal cutting speed required for aluminium. Make sure the drill is tightly held in the tail-stock chuck, then ease it into contact with the work piece. Watch the swarf, if you have a good ribbon coming away from the drill, your speed is ok. More than likely you will get small scrolls. make sure they are clearing well. Then just continue like this until the hole is made, pulling the drill out every so often to fully clear the swarf. Depending on the dimensional accuracy you need, you may have to start with a smaller hole and then ream. similar process, but you finish with a reamer.

If you are still unsure, try on a few test blocks first to get a feel for it. If you keep breaking drills, you are being too heavy handed, if the drill is wandering, then it is either dull, or the tail-stock is out of alignment.

Good luck.

Colt Pen Drill Bits

10 Pc HSS Cobalt Coated Step Drill Bit Set SAE Standard & MM Metric Combo 2 Sets $54.99

Iron Cutting HSS 40mm Dia Hole Saw Twist Drill Bit w Hex Wrench $17.13

1Pcs 7.2mm Straight Shank HSS Twist Drill Bits Set $3.79

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9mm Straight Shank HSS Twist Drill Bit for Wood Plastic $6.84

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Tool .25in. Turbomax HSS Drill Bits 73316 $16.86

Tool .17in. Turbomax HSS Drill Bits 73311 $14.34

Tool .13in. Turbomax HSS Drill Bits 73308 $13.12

Tool .06in. Turbomax HSS Drill Bits 73304 $14.78

Tool .14in. Turbomax HSS Drill Bits 73309 $13.56

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New Interstate 61/64″ 118D HSS Black S&D Drill bit $19.99

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New Interstate 53/64″ 118D HSS Black S&D Drill bit $19.99

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1PC Reduced Shank HSS Twist Drill Bit Select from 13mm to 19mm $9.78

1PC Reduced Shank HSS Twist Drill Bit Select from 13mm to 19mm $9.99

1PC Reduced Shank HSS Twist Drill Bit Select from 13mm to 19mm $9.99

1PC Reduced Shank HSS Twist Drill Bit Select from 13mm to 19mm $10.79

1PC Reduced Shank HSS Twist Drill Bit Select from 13mm to 19mm $11.19

1PC Reduced Shank HSS Twist Drill Bit Select from 13mm to 19mm $11.29

1PC Reduced Shank HSS Twist Drill Bit Select from 13mm to 19mm $11.29

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1PC Reduced Shank HSS Twist Drill Bit Select from 13mm to 19mm $11.59

1PC Reduced Shank HSS Twist Drill Bit Select from 13mm to 19mm $11.69

1PC Reduced Shank HSS Twist Drill Bit Select from 13mm to 19mm $11.79

1PC Reduced Shank HSS Twist Drill Bit Select from 13mm to 19mm $11.89

1PC Reduced Shank HSS Twist Drill Bit Select from 13mm to 19mm $11.99

1PC Reduced Shank HSS Twist Drill Bit Select from 13mm to 19mm $12.19

1PC Reduced Shank HSS Twist Drill Bit Select from 13mm to 19mm $12.59

1PC Reduced Shank HSS Twist Drill Bit Select from 13mm to 19mm $12.69

1PC Reduced Shank HSS Twist Drill Bit Select from 13mm to 19mm $12.89

1PC Reduced Shank HSS Twist Drill Bit Select from 13mm to 19mm $13.29

1PC Reduced Shank HSS Twist Drill Bit Select from 13mm to 19mm $13.29

1PC Reduced Shank HSS Twist Drill Bit Select from 13mm to 19mm $13.39

1PC Reduced Shank HSS Twist Drill Bit Select from 13mm to 19mm $13.59

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1PC Reduced Shank HSS Twist Drill Bit Select from 13mm to 19mm $13.69

1PC Reduced Shank HSS Twist Drill Bit Select from 13mm to 19mm $13.79

1PC Reduced Shank HSS Twist Drill Bit Select from 13mm to 19mm $13.79

1PC Reduced Shank HSS Twist Drill Bit Select from 13mm to 19mm $14.19

1PC Reduced Shank HSS Twist Drill Bit Select from 13mm to 19mm $14.49

1PC Reduced Shank HSS Twist Drill Bit Select from 13mm to 19mm $14.49

1PC Reduced Shank HSS Twist Drill Bit Select from 13mm to 19mm $14.99

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1PC Reduced Shank HSS Twist Drill Bit Select from 19.5mm to 34mm $16.49

1PC Reduced Shank HSS Twist Drill Bit Select from 19.5mm to 34mm $16.99

1PC Reduced Shank HSS Twist Drill Bit Select from 19.5mm to 34mm $17.49

1PC Reduced Shank HSS Twist Drill Bit Select from 19.5mm to 34mm $17.99

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1PC Reduced Shank HSS Twist Drill Bit Select from 19.5mm to 34mm $18.99

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SEPTLS58562329 – Left-Hand Heavy Duty HSS Drill Bits $20.16 Heavy-duty web construction for strength and durability. 135 split point begins drilling immediately, minimizing bit walk. General metal drilling, creates pilot holes for screw extractors….

SEPTLS58562318 – Left-Hand Heavy Duty HSS Drill Bits $7.73 Heavy-duty web construction for strength and durability. 135 split point begins drilling immediately, minimizing bit walk. General metal drilling, creates pilot holes for screw extractors….

SEPTLS58591162 – 1/2 Reduced Shank Silver Deming HSS Drill Bits $31.60 For use in 1/2 drill chucks. Three-flatted shank for secure grip….