How do I fix a warped phenolic router table top? - Router Forums
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post #1 of 12 (permalink) Old 11-22-2012, 07:10 AM Thread Starter
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Question How do I fix a warped phenolic router table top?

I have a phenolic router table with about 10,000th of an inch sage in its middle. I need to learn how to fix this problem. Thank you.
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post #2 of 12 (permalink) Old 11-22-2012, 07:32 AM
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10 thousandths! That is 0.0001. That is smaller than a human hair. How do you measure that? I worked in precison machining in QC and we had to use highly accurate micrometers,etc. I'm wondering how you could even see a sag that small? Could you please explain in some detail?

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post #3 of 12 (permalink) Old 11-22-2012, 01:16 PM
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I've seen it mentioned here that a very slight concavity, in the top, is actually a good thing; I'm still not clear why. But I can sure see why a slight bulge would be undesirable.
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post #4 of 12 (permalink) Old 11-22-2012, 05:08 PM
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Welcome to the forum, Joseph.

I do not see about 10,000th of an inch as a problem?

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post #5 of 12 (permalink) Old 11-22-2012, 05:12 PM
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Joseph, your table is fine at that spec.

Dan, you got that backwards. Concave means the center of your cut will be shallow. Slightly convex means the cut will be a consistent depth. The patented Rousseau mounting plate is slightly convex and will work great for most people. All other plates should be as flat as possible.

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post #6 of 12 (permalink) Old 11-22-2012, 08:54 PM
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Quote:
Originally Posted by Mike View Post
Joseph, your table is fine at that spec.

Dan, you got that backwards. Concave means the center of your cut will be shallow. Slightly convex means the cut will be a consistent depth. The patented Rousseau mounting plate is slightly convex and will work great for most people. All other plates should be as flat as possible.
Thanks for clarifying that, Mike. That certainly makes more sense.
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post #7 of 12 (permalink) Old 11-22-2012, 09:40 PM
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Some time ago I paid the princely sum of $3.00 for a bench top router table that turned out to be so out of flat that no instruments were needed to tell me so. This shot shows how I rectified the problem.
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Harry



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post #8 of 12 (permalink) Old 11-22-2012, 10:21 PM
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Quote:
Originally Posted by topish2003 View Post
I have a phenolic router table with about 10,000th of an inch sage in its middle. I need to learn how to fix this problem. Thank you.
WOW, 0.0001 sure not much. Are you sure of that measurement ?
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post #9 of 12 (permalink) Old 11-23-2012, 09:54 AM
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I think he meant ten thousandths...(.0100).

Which is also 100 ten thousandths.

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post #10 of 12 (permalink) Old 11-23-2012, 10:09 AM
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Even so Harrison the table top is fine.

Mike
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