Collet adaptor - Router Forums
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post #1 of 11 (permalink) Old 04-04-2006, 10:15 PM Thread Starter
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Default Collet adaptor

I am looking to find a 3/8" collet adaptor for my Ryobi. It has the half inch chuck, and uses a1/4" adapter in it. Ryobi made a 3/8" adaptor for it under the part number of 6072213, but it is no longer made.

The idea of taking a 1/4" collet, holding it with vice grips and drilling it to 3/8" does not thrill me. At 22,000 RPM, I want the assurance of something factory made.

The question remains, is there another source for a 1/2" to 3/8" adaptor?

Most respectfully

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post #2 of 11 (permalink) Old 04-05-2006, 12:00 AM
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Hi Michael
Just asking , why not just stick with the 1/2" shank and the 1/4" shank router bits and just forget the 3/8" shank router bits.
Trying to drill out a collet will not work,the collects are high temp steel.(D.H.T.)
You can make one on a lathe and then heat treat it,but that's alot of work for a part you will not use to many times or find to many bits in the 3/8" shank size.

Just asking


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post #3 of 11 (permalink) Old 04-05-2006, 12:28 AM
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Hey Michael

While searching some eBay listings the other night, I saw an auction for a variety of router adaptors but I can't remember where I was looking or what brand they were. Must be an age thing.

If you have time to wait, you can run a search on eBay for your Ryobi adaptor and eventually an auction or sale will come up.

Not sure this will help you but Porter Cable makes an 1/2" to 3/8" adaptor #42133. Check the web for it.

Also Woodworkingcom has a 1/2" to 3/8" adaptor, see url


Both these items appear to be what you are looking for, however I can't vouch they will fit or serve your purpose.

I agree with Bj, as I am currently making the change over to 1/2" router bits and relegating my 1/4" bits for emergency use only.

Hope this helps.


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post #4 of 11 (permalink) Old 04-05-2006, 05:59 PM Thread Starter
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bobj3: To answer your question, I have about 35 Carbide router bits in 3/8ths. (HFT's competitor had a heck of a deal on them.) They work great in my hand held PC, but I really wanted to use them in the table. As a business teacher I should know that a bargain is not always a bargain.

As far as milling or turning an adaptor myself; my austaire version of a lathe would be a pair of vice grip pliars and an electric drill.

Labric: Thank you for the URLs. I thought of that E-Bay thing and will keep trying it.
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post #5 of 11 (permalink) Old 04-05-2006, 06:53 PM
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Have you considered contacting Ryobi directly to see if they offer a 3/8" collet? May be faster not necessarily cheaper way to go but, it is an option to consider.
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post #6 of 11 (permalink) Old 04-05-2006, 07:12 PM
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Got ya, when you have 35 bargain Carbide router bits it may worth the time to run down a collet.
I'm from the old school when you can find one you make one.
I have made many tools with just a elec. drill,bolt,and a belt grinder.
It may take a time or two to get it right.
Here's a link that you may want to check out. look up items G-1227 and G-1638 both are .375"id.
It's worth a shot and then maybe not.

It's Just a thought.
Also check out

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post #7 of 11 (permalink) Old 04-05-2006, 07:20 PM
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Just a Note drop the - in the part number ie. G1227 not G-1227
For the Grizzly parts.

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post #8 of 11 (permalink) Old 04-06-2006, 07:31 PM Thread Starter
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Labric's URL paid off. They have what I need and it will be here in time for spring break.
I do appreciate all the ideas and assistance.

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post #9 of 11 (permalink) Old 10-18-2013, 04:08 PM
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Michael, thank you for your post. It was very helpful to me, as I have exactly the same need, with two 3/8" collet routers and a newly purchased 1/2"collet Roybi plunge router (picked up at an estate sale for $10). All of my router bits are 3/8", so the idea of a 1/2" to 3/8" adapter was attractive to me. Additionally, I wasn't so concerned that drilling a hole to enlarge the 1/4" ID to 3/8" ID would weaken the materials as I was concerned that the larger ID would end up not concentric with the OD, causing a wobble. Using the link labric provided took me to a Highland Woodworkers website, where the adapter was $15.98, including shipping. Further web searches revealed the same item at the Hartville Tool website for $10.88, with free shipping. Today is a good day.
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post #10 of 11 (permalink) Old 01-16-2014, 10:40 PM
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