Sherline Sensitive Drilling Attachment w/ 5/32″ Drill Chuck for 3/4-16 Spindle Thread

Sherline Machining ToolsSKU: RB-She-194
Manufacturer #: 1012

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Description

  • Sherline Sensitive Drilling Attachment w/ 5/32″ Drill Chuck for 3/4-16 Spindle Thread
  • Drill chuck holds bits from 5/32″ down to as small as #80 (.0135″)
  • Threads directly onto the 3/4-16 spindle nose in seconds, just like an end mill holder
  • Spring-loaded brass shaft automatically returns the chuck to the "up" position
  • Ball-bearing knurled feed ring lets you feel the cut for finer control
  • Reduces broken bits when drilling holes smaller than 1/16″ in diameter
  • Compact brass and steel construction sized for Sherline lathe and mill spindles

The Sherline Sensitive Drilling Attachment is designed to make drilling small holes quicker, easier, and far less frustrating. Using a quill or handwheel feed on drills smaller than 1/16″ often leads to broken bits, since the extra leverage makes it hard to feel how the drill is cutting. This attachment solves that by letting you feed the drill by hand while a spring-loaded shaft controls the pressure, so you can "sense" the cut in real time.

The unit consists of a 5/32″ drill chuck that slides on a central shaft, with a spring inside a brass spacer tube supporting the chuck and returning it to the up position after each pass. Installation takes seconds: simply insert the spring tube into the spindle and thread the attachment body onto the 3/4-16 spindle thread. To use, grasp the red knurled ring (which rides on a ball bearing) and pull the drill down against spring tension, letting it return when finished. Note: your spindle's thru-hole must measure at least .408″ for proper fit — Sherline recommends checking this before ordering.

  • 1x Sherline Sensitive Drilling Attachment (assembled)
  • 1x 5/32″ Chuck Key
  • Brass spring tube: 5″ long x 13/32″ diameter
  • Feed ring diameter: 1-3/4″
  • Extension spring: 2.25″ x .028″
  • Part Number: 1012
  • Chuck Capacity: 5/32″ (4 mm) down to #80 (.0135″ / .34 mm)
  • Runout: .003″ or less
  • Spindle Fitment: 3/4-16 external thread (Sherline lathes & mills)
  • Minimum Spindle Thru-Hole Required: .408″
  • Includes: 5/32″ chuck key
  • Construction: Brass shaft/tube with steel hardware

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