How standard is a 3-hole guide mount? - Router Forums
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post #1 of 18 (permalink) Old 08-24-2010, 11:29 PM Thread Starter
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Default How standard is a 3-hole guide mount?

Hi (newbie here),

I've just bought a Bosch 1617, which was a very close call with a Dewalt 618. I also got a Craftsman dovetail kit.

Alas, the two don't fit because the Bosch doesn't have the 3-hole mount required by the kit. I'm thinking of returning the dovetail kit, as there doesn't seem to be any kind of adapter I can see, but if having a standard mount will give me greater flexibility then maybe I should exchange my router instead? This wouldn't be such a big deal as I went to the store intending to by the Dewalt anyway.

Suggestions?

Thanks

-Darren
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post #2 of 18 (permalink) Old 08-24-2010, 11:42 PM
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Quote:
Originally Posted by dazwin View Post
Hi (newbie here),

I've just bought a Bosch 1617, which was a very close call with a Dewalt 618. I also got a Craftsman dovetail kit.

Alas, the two don't fit because the Bosch doesn't have the 3-hole mount required by the kit. I'm thinking of returning the dovetail kit, as there doesn't seem to be any kind of adapter I can see, but if having a standard mount will give me greater flexibility then maybe I should exchange my router instead? This wouldn't be such a big deal as I went to the store intending to by the Dewalt anyway.

Suggestions?

Thanks

-Darren
Hi Darren, welcome to the forum
By "3-hole mount", are you asking about an adapter for the guide bushings? If so, they are readily available.
Amazon.com: Bosch RA1100 Threaded Router Template Guide Adapter: Home Improvement

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post #3 of 18 (permalink) Old 08-25-2010, 04:25 AM
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thanks for this information
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post #4 of 18 (permalink) Old 08-25-2010, 11:35 AM Thread Starter
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Originally Posted by jschaben View Post
Hi Darren, welcome to the forum
By "3-hole mount", are you asking about an adapter for the guide bushings? If so, they are readily available.
<snip url of Bosch RA1100>
This might be what I'm looking for, but does this adapter have three equally spaced threads with a radius of about 1 1/8"? Looking at the picture, these would be on the bottom, but as the outside diameter of Bosch's tool-free adapter is only 2 1/16", it doesn't look like the adapter would be big enough unless the collar was tapered.

I need a few more posts yet, otherwise I'd send a link to the picture on Sears' site (it's Sears item #00902579000, if you're interested - the bushings are next to the template on the right of the picture).
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post #5 of 18 (permalink) Old 08-25-2010, 04:04 PM
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Originally Posted by dazwin View Post
This might be what I'm looking for, but does this adapter have three equally spaced threads with a radius of about 1 1/8"? Looking at the picture, these would be on the bottom, but as the outside diameter of Bosch's tool-free adapter is only 2 1/16", it doesn't look like the adapter would be big enough unless the collar was tapered.

I need a few more posts yet, otherwise I'd send a link to the picture on Sears' site (it's Sears item #00902579000, if you're interested - the bushings are next to the template on the right of the picture).
Hi Darren - Is this a picture of the kit? Are you talking about the two 3-wing gadgets on the lower right? Those would be the guide bushings for the dovetail template. The adapter allows you to use standard PC guide bushings. To use the RA1100 adapter you would need to also acquire PC style bushings the same size as included with the dovetail jig. My thinking here is you would have also had the same issue with the deWalt. Someone here may know of an adaptor for the Sears bushings but I personally don't know of any unless you adapt a craftsman base plate to your Bosch router.
The problem here is Sears inimitatable ability to specify products such that you are forced to buy more Craftsman products just to use the ones you already have. One reason I have not purchased any Craftsman tools in over 30 years and am not planning to anytime soon. The only Craftsman stuff I have has either been given to me or bought so cheap I could consider it a consumable and throw it out.
Sorry I couldn't be more help. My solution would be to return the jig and shop for one that will use PC bushings... There are plenty on the market at or near that price point. I don't think returning the router will solve the issue.
Good Luck
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post #6 of 18 (permalink) Old 08-25-2010, 04:42 PM
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Any "guide" bushing will work with the craftsman DT jig. You just need to match the size, ie., 1/2" to 1/2". Craftsman guides are useless.

For another alternative for you, get yourself a Milescraft plate, this will easily allow you to adapt PC guides. They aren't that much in cost.

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post #7 of 18 (permalink) Old 08-25-2010, 04:49 PM
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Hi Darren:

The next problem is that the jig in John's picture is not complete. This is the "stripped down" version sold by some vendors.

Compare this product:
Busy Bee Tools Product Detail

with this one.
Busy Bee Tools Product Detail

Other than the first one is 24" and the second is 12", they should both be identical for proficient use. But if you look closely you'll see the differences. Now compare these to your's.

I have counted at least 9 of this design under a variety of brand names. if you've paid more than $59 Cdn, you've paid too much. Take it back and look for something that looks like the 12" one above. The handles are important.

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post #8 of 18 (permalink) Old 08-25-2010, 05:33 PM
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I also have the bosch 1617 and craftsman dovetail jig you have pictured. On my plunge base, I put a base plate that allows me to put Porter Cable style busings on it. (Bought it a Woodcraft for around $20) This setup works fine with the dovetail jig.
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post #9 of 18 (permalink) Old 08-25-2010, 07:07 PM
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post #10 of 18 (permalink) Old 08-26-2010, 12:54 AM Thread Starter
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Folks - many thanks for all your replies. John - yes, that's the kit.

A bit more research and I think I could also use Bosch's own RA1103 and RA1105 (Amazon have a RA1125 for $30). However, I think I will take John's advice and return the jig - if I was going to make things difficult by not having a standard mount that would be one thing, but it does seem like Craftman's 'standard' is not a standard at all. I also wasn't that impressed with the quality of the clamping knobs. I did buy it rather hastily for (cough) $110, but heard they were meant to be a good make - oh well.

Allthumbs - thanks for the links. One question though - why doesn't the 24" model have the arms? They look like either quick release levers, or maybe they move the stock in and out of place.
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