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post #1 of 16 (permalink) Old 01-17-2012, 10:48 PM Thread Starter
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Default Guide bushing off center

So I purchased an inexpensive Woodriver ($19) set and they are off center. I am wondering if this set maybe was just not made for my PC 690.


Last edited by NoChatter; 01-18-2012 at 01:18 AM.
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post #2 of 16 (permalink) Old 01-18-2012, 12:21 AM
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First check to make sure the router moter is in the base and the clamp is working properly, adjust the clamp if needed.
Then check to see if there is any play between the collar and router base, loosen the screws that hold the base plate and see how much adjustment you can get at that point. You might find that you can get the collar centered. if it will still not center take the collar set back and get a different set.
When I get a base set up with a collar try to leave it set up as long as possible, but I have more routers than the normal shop.

Hope this helps,
Mike
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post #3 of 16 (permalink) Old 01-18-2012, 01:15 AM Thread Starter
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So I tried the tips with no luck,and as I am carefully checking alignment I noticed tabs which are very thin but there none the less and I am wondering if the over priced PC guides are very specific and use these tabs for alignment. I am going to route a circle tomm. to see if it shows up in the cut.Thanks man.
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post #4 of 16 (permalink) Old 01-18-2012, 01:32 AM
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Quote:
Originally Posted by NoChatter View Post
So I tried the tips with no luck,and as I am carefully checking alignment I noticed tabs which are very thin but there none the less and I am wondering if the over priced PC guides are very specific and use these tabs for alignment. I am going to route a circle tomm. to see if it shows up in the cut.Thanks man.
I have a set of Rockler, Porter Cable and Jessem collars and they all have a little play in them. The tabs do help but aren't perfect. I shim with aluminum tape when needed.

You can measure around the base from the collar and find where the measurement is correct, mark this point and keep it against the template. Turn the router as you go to keep that point against the template.

If the collars would center it sure does make things easier, especially for inlay work.

Hope this helps,
Mike

Last edited by MEBCWD; 01-18-2012 at 01:36 AM.
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post #5 of 16 (permalink) Old 01-18-2012, 03:48 AM
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Hi Mike

Just my 2 cents, it looks like the error is coming from the black plate, try this put in a inlay brass guide (most inlay sets come with a line pin) or a guide that has 1/4" hole in the center of the brass guide and chuck a 1/4" dowel pin or a 1/4" router bit that just fits in the inside of the brass guide now take the 3 screws out of the black plate and turn the plate until the 3 holes line up dead on if you don't find that to be true drill out the holes just a little bit so they do line up just right you may need to make the counter sink hole a little bit bigger sometimes.

I have about 40 PC plates and I have found out that only 10 are drilled out dead on ,most brass guide are dead on the norm or to say almost all are..they are a item that's made on a lathe and it's hard to get them off center that way..the hole they sit in maybe off a little bit but that's not a big deal once you get the plate in the right place on the base of the router.


Hope this helps

P.S. if you use Allen flat screws they have a smaller OD head than the normal flat head screws this will help with adjustment of the plate without the need to rework the counter sink holes in the plate but you must drill the holes bigger so you can adjust the plate.
If you still have a error with the plate drill out the holes to a flat bottom hole and use Allen button screws (some times called Pan head screws) so you move the plate around to line it up on dead center with the arbor shaft..

inlay kit with line up pin
http://www.harborfreight.com/solid-b...kit-99552.html

Here's one more way to take the error out your plate/router just replace it with one that's easy to setup and you can use the brass guides you now have also and it makes it easy to get the brass ring nut tight as well, one more plus for the MilesCraft plate you can remove the turn lock insert and you can spin up bigger bits (2" OD ) unlike the normal PC base plate that will max you out at 1" OD the norm..

http://www.amazon.com/Milescraft-120...897632&sr=1-13
==

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So I purchased an inexpensive Woodriver ($19) set and they are off center. I am wondering if this set maybe was just not made for my PC 690.



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Last edited by bobj3; 01-18-2012 at 08:57 AM.
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post #6 of 16 (permalink) Old 01-18-2012, 07:37 AM
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Just to augement the above suggestions, you might also consider getting a router centering cone/pin/gauge to aid setup of the base plate then install and check the guide for center.

Can also use the cone to further set the guide if sufficient slop exists.
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post #7 of 16 (permalink) Old 01-18-2012, 09:18 AM
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Can get you to ~+ or - .002" of center.
And there are many others.
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post #8 of 16 (permalink) Old 01-18-2012, 09:23 AM
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The inlay kit BOBJ3 gave the link to is also available from Grizzly, Rockler, MLCS, and others. All of them are similar. some have the centering pin some don"t. If you get one, get one with the centering pin. Rockler wants 34.99 for their kit without the centering pin and it's not any better than the Harbor Freight kit in my opinion. The bits .. some are better than others. Just remember, they work better with larger inlays.
If you want to get a new set of bushings Rockler has their set for 29.99 with 1/4" and 1/2 centering pins. Rockler Router Guide Bushing Kit - Rockler Woodworking Tools

Good luck,
Mike
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post #9 of 16 (permalink) Old 01-18-2012, 10:32 AM
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Neat design Pat.

Mike(NC), some routers do not use chamfered holes for the mounting screws. They use variations on truss head screws in an oversized counter sunk hole so there is room for adjustment of the sub base plate. The Rousseau centering kit, centering cones or inlay kits will all do the job well.

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post #10 of 16 (permalink) Old 01-18-2012, 12:48 PM
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Quote:
Originally Posted by Quillman View Post
Can get you to ~+ or - .002" of center.
And there are many others.
The subbase kit Pat showed a link to would probably be worth looking into if you are going to be doing very much close tolerance work. It has already been bookmarked in my browser.
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