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Sanding with regular sander

Posted: Mon Feb 08, 2010 11:56 pm
by swampgator
I ran into something yesterday that I have never noticed before. I don't know if I have been asleep or if this is the first time I was paying attention. I know, it's hard to tell. I ripped some rails and stiles to dress off the front of a couple of book cases I was working on. While using a vibrator sander, at a certain place in the rail, the sander would kick away from that spot. About two inches from the small knot, the sander would deflect. I found it harder to control. The grain is tight and straight and the wood is pine. I have sanded very much over my years. I always like the results of sanding, so I don't mind it all that much. But, this was new to me. I know that this is not a SS problem, but one that I have encountered with my new hobby. Anyone have any ideas of this cause and how I should respond? Thank you in advance.

the old swampgator in Florida

Posted: Tue Feb 09, 2010 12:23 am
by tkhudson
There may have been a small pitch pocket near that knot? That's my 2 cents worth anyways.

Posted: Tue Feb 09, 2010 9:08 am
by Gene Howe
Grain direction.
When it quits kicking, you know it's well sanded.

Posted: Tue Feb 09, 2010 10:45 pm
by swampgator
Gene,
I like the idea that when it starts kicking it is well sanded. However, I wasn't finished when I looked at it. :mad: Oh, well, I finally got it down to where I wanted it. But, it was tough.

TK, I wondered about the sap near that knot. The knot seemed to sand fine, but on either side, it did not like to stay put.

Today, I put the coat of oil base primer on it and will give it a light sanding tomorrow before putting on the first coat of latex. Will get pictures posted as soon as the first one is done. Thanks for your patience and responses.

the old swampgator in Florida