Will Bosch 1 3/8" OD bushing clear collet? - Router Forums
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post #1 of 13 (permalink) Old 12-17-2012, 08:46 PM Thread Starter
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Default Will Bosch 1 3/8" OD bushing clear collet?

I noticed that Bosch bushings are bigger than PC sized.

Will the 1 3/8" OD 1 19/64" ID bushing clear the Bosch 1617 collet?

I've never been happy with the slop in my 890 series plunge base compared to the 690 that preceded it before a move, and a bushing bigger than a collet would give more reach to small bits without making templates big enough to surround a sub-base.,
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post #2 of 13 (permalink) Old 12-18-2012, 12:09 AM
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Drew, the first question is this: what is the length of the guide bushing collars you are using? The best sets to work with are like the brass set of PC style bushings from Woodcraft where the collars are all .240" so they can be used with 1/4" template material. Lee Valley sells a similar set for less as a rule.

Another option is to get the Trend Unibase and their GB-3 set of heavy duty plastic busings. The way these mount gives you about 1/4" extra depth before the collet bottoms out. Milescraft sells a set with a replacement sub base plate that will give you a touch more depth than the PC style for about $20 but they are more flexible than the Trend set.

My understanding is that a Bosch 1617 sub base plate will bolt onto a PC 690 or 890 series router but I have never tried it... If I get the chance tomorrow I will.

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post #3 of 13 (permalink) Old 12-18-2012, 07:01 AM
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Mike, haven't you missed Drew's question which was will the 1617 collet go through the centre of 1 19/64 ID template guide.
This question raises two important points, the simplicity of METRIC and the reason that where possible I use a 40mm template guide which allows the collet of EVERY router on the international market to fit through, enabling a much deeper cut plus of course the ability to actually SEE what the bit is doing. 1 19/64"..............really!

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post #4 of 13 (permalink) Old 12-18-2012, 07:47 AM
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I'm think I'm missing something here also. Seems simple enough that if the collet nut is smaller than 1-19/64", then yes, it will pass through. That just seems to simplistic.
I also didn't realize that Bosch had 1-3/8" collet available.

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post #5 of 13 (permalink) Old 12-18-2012, 09:57 AM
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Quote:
Originally Posted by jschaben View Post
I'm think I'm missing something here also. Seems simple enough that if the collet nut is smaller than 1-19/64", then yes, it will pass through. That just seems to simplistic.
I also didn't realize that Bosch had 1-3/8" collet available.
I think it was a 1 3/8 bushing, not collet. And yes John, you are quite right, if the collet is smaller then the ID of the bushing, it will go through, no matter if either are metric or imperial! Assuming of course both are concentric.

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Last edited by Dmeadows; 12-18-2012 at 10:01 AM.
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post #6 of 13 (permalink) Old 12-18-2012, 11:12 AM
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Hi Harry

I have NOT seen one Bosch router that can take on the strange 40mm guide But he can rework the base plate so it can take on the 1 1/2" OP or Lee Valley guide that's almost the same as the 40mm guide then the collet nut will fit inside the guide but it will be tight fit..

Here's a link to show how to do it on any base plate

http://www.routerforums.com/project-...-bogydave.html

If you use the Grizzly plate you can switch out the insert and use the PC or the Lee Valley brass guides in a snap..

==

Quote:
Originally Posted by harrysin View Post
Mike, haven't you missed Drew's question which was will the 1617 collet go through the centre of 1 19/64 ID template guide.
This question raises two important points, the simplicity of METRIC and the reason that where possible I use a 40mm template guide which allows the collet of EVERY router on the international market to fit through, enabling a much deeper cut plus of course the ability to actually SEE what the bit is doing. 1 19/64"..............really!


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Last edited by bobj3; 12-18-2012 at 02:42 PM.
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post #7 of 13 (permalink) Old 12-18-2012, 01:23 PM
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Quote:
Originally Posted by Dmeadows View Post
I think it was a 1 3/8 bushing, not collet. And yes John, you are quite right, if the collet is smaller then the ID of the bushing, it will go through, no matter if either are metric or imperial! Assuming of course both are concentric.
My bad, I was thinking 1-3/8" bushing but typed collet. I guess I'm not aware of exactly what size bushings Bosch does offer. All the postings I've seen for their guide bushing set lists part numbers not sizes and I haven't been interested enough to try and cross reference them.

PS - Bj, you're right, I already have a plate for the colt plunge base sized for Lee Valley bushings.

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Last edited by jschaben; 12-18-2012 at 01:25 PM.
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post #8 of 13 (permalink) Old 12-18-2012, 04:41 PM
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Bosch guide bushing 1-3/8" is about 35 mm. The collet is 28 mm at least on my GOF 1300CE router. One must deduct 4 mm to get inside diameter of guide bushing, so it should just barly pass thourgh. Better with 40 mm guide bushing Bosch part no 2 609 200 312.
Pic isn ot of 40 mm but only type of bushings.

regards Leif
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post #9 of 13 (permalink) Old 12-18-2012, 06:36 PM
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Just a picture of the strange guides for the Bosch router,very thin and very cheap.They bend over if you look at them wrong like many of that type of guides do

Amazon.com: Bosch RA1125 7-Piece Router Template Guide Set: Home Improvement

===

Quote:
Originally Posted by Leifs1 View Post
Bosch guide bushing 1-3/8" is about 35 mm. The collet is 28 mm at least on my GOF 1300CE router. One must deduct 4 mm to get inside diameter of guide bushing, so it should just barly pass thourgh. Better with 40 mm guide bushing Bosch part no 2 609 200 312.
Pic isn ot of 40 mm but only type of bushings.

regards Leif


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Last edited by bobj3; 12-18-2012 at 09:37 PM.
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post #10 of 13 (permalink) Old 12-19-2012, 12:15 AM
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Bosch metric guide bushings are not available in North America.

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