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WoodRiver 145705W
Item 145705

3/8" x 4" Forstner Bit Extension

$9.50

Forstner bit extensions solve one of the major problems with forstner Bits -- their limited depth capacity. This extension fits WoodRiver forstner bits only that have 3/8" diameter shanks.Designed...

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Details

Forstner bit extensions solve one of the major problems with forstner Bits -- their limited depth capacity. This extension fits WoodRiver forstner bits only that have 3/8" diameter shanks.



  • Designed for use with WoodRiver forstner bits only


  • Extension adds 4” to length of forstner bit


  • Socket accepts forstner bits with 3/8” diameter shanks


  • Forstner bit held in extension socket with two set screws


  • 3/8” diameter drive shank allows use of multiple extensions




Reviews

4.0 out of 5 stars
4 Reviews
  1. 3.0 out of 5 stars
    by on

    Inset screws too long

    I got this extender to make longer holes with a 3/4" Forstner bit - I figured since it was 3/4" diameter, it would work with my 3/4" Forstner bit. I figured wrong. The set screws protrude about a 16th" making it useless for 3/4" holes. Should work well with 7/8" or 1" bits. Sturdy construction and good precision. My only regret is that they don't spell out what size bits it will work with.

  2. 5.0 out of 5 stars
    by on

    Good Performer

    Good solid extender when needed.

  3. 5.0 out of 5 stars
    by on

    Critical When You Need IT

    As a turner, one needs to drill holes deep in a spindle project, like a pepper mill. On a Midi Lathe, there isn't the space to just use a long bit extender. I bought 2 of these extensions. Drill in to the depth of the extension. Add a second 4" extension and drill to that depth. Go to the 10" extension and your done.

  4. 3.0 out of 5 stars
    by on

    Extension bit

    Attachment end a little large if drilling smaller size holes.

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