Drilling Pen Blanks with a Radial Arm Saw (RAS) - Router Forums
 
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post #1 of 9 (permalink) Old 05-18-2012, 11:35 PM Thread Starter
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Default Drilling Pen Blanks with a Radial Arm Saw (RAS)

Hi all,
I have also drilled pen blanks using a drill chuck attached to a radial arm saw (RAS).

An advantage is being able to use a longer drill bit because of the long parallel travel of the motor.
A disadvantage is that the drill chuck would only take up to 8 mm pen drilling bits.
I could not find a larger drill chuck that would fit on the threaded motor shaft on my RAS made in 1973.
The motor runs at 3450 rpm, so the safety minded workers should be happy.

Attached are a series of images that show the layout.

In the pictures, nothing is shown attached to the saw.
The drill vise holding the pen blank, must be aligned and securely anchored to the table.
=
Mark
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Last edited by allbarknobite; 05-18-2012 at 11:46 PM. Reason: corr
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post #2 of 9 (permalink) Old 05-19-2012, 08:21 AM
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drill chuck at a great price

http://www.ebay.com/itm/1-pc-key-1-1...item20c2725e58


1 pc SDS plus Adapter & 1/2" CAP Drill Keyless Chuck | eBay

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Last edited by bobj3; 05-19-2012 at 08:34 AM.
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post #3 of 9 (permalink) Old 05-19-2012, 08:22 PM Thread Starter
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Thanks for finding those drill chucks on eBay, but the 5/16-24 external post on the chuck that I have is hard to pin down.

The DeWalt ras motorshaft has a 5/16-24 female thread on the accessory end.

Do you know of an "adapter" that I can use to upsize to the chucks you suggested?
It would have to go from 5/16-24 male to 3/8" 24UNF male (or larger) to use the drill chucks on the market. So far I haven't found one.

Thanks again,
Mark
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post #4 of 9 (permalink) Old 05-19-2012, 09:08 PM
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Hi Mark

Sorry I don't off the top of my head
But if you have a lathe or have mate that has one you can make your own easy just pickup a 1/2-20 Allen set and turn the end down to 5/16 and put the threads on it, the 1/2-20 drill chucks are easy to find

Or just pickup the chuck below and turn the adapter down on one end to 5/16..
http://www.ebay.com/itm/1-pc-SDS-plu...7331b5&afsrc=1


==
Quote:
Originally Posted by allbarknobite View Post
Thanks for finding those drill chucks on eBay, but the 5/16-24 external post on the chuck that I have is hard to pin down.

The DeWalt ras motorshaft has a 5/16-24 female thread on the accessory end.

Do you know of an "adapter" that I can use to upsize to the chucks you suggested?
It would have to go from 5/16-24 male to 3/8" 24UNF male (or larger) to use the drill chucks on the market. So far I haven't found one.

Thanks again,
Mark



"It's fine to disagree with other members as long as you respect their opinions"

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http://www.youtube.com/channel/UCT-n...RWaEpMA/videos

Find all threads started by bobj3
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Last edited by bobj3; 05-19-2012 at 09:11 PM.
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post #5 of 9 (permalink) Old 05-20-2012, 09:08 PM Thread Starter
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Default Thanks for your good advice.

Thanks for the update.
I took your advice, went to eBay and will machine the end.
I went for the standard chuck as shown in the picture.
Thanks again,
Mark
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post #6 of 9 (permalink) Old 05-20-2012, 09:34 PM
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You're Welcome Mark

Here's little tip chuck up a 1/2-20 nut in the lathe ,that way you will not screw up the threads on the adapter but I'm sure you know that

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post #7 of 9 (permalink) Old 05-21-2012, 08:03 PM
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Quote:
Originally Posted by bobj3 View Post
I thought this would be a great upgrade for my drill. BIN on Saturday. Showed up in my mail TODAY (Monday).
Wow.

  • Accident free since 10/27/12 at 3:58 pm.
  • Cursing free since 10/27/12 at 3:59 pm.
  • ...it happened in Everett, WA USA
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post #8 of 9 (permalink) Old 05-21-2012, 08:31 PM Thread Starter
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Default lathe chucking using a 1/2-20 nut

Quote:
Originally Posted by bobj3 View Post
You're Welcome Mark

Here's little tip chuck up a 1/2-20 nut in the lathe ,that way you will not screw up the threads on the adapter but I'm sure you know that.
Jigs
=
Thanks for the tip on chucking up a 1/2-20 nut to hold the part for threading.
Until you suggested it, it didn't cross my mind that I would have to use extra care.
Doing your way will probably produce Minimum Runout on the new threaded adapter.
=
Mark
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post #9 of 9 (permalink) Old 05-22-2012, 08:16 AM
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RAS to drill! I would have never guessed! Got a couple of old motors- will check to see if they are threaded on the backside.

John T.
Life is like water-skiing; if you slow down, you go down.
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