Sanding wood with uneven grains?

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Old 07-31-20, 10:31 PM
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Sanding wood with uneven grains?

I'm trying to strip paint off this patio cover beam. A belt sander just scrapes the top. What tool would you use to get into the grooves?
https://i.imgur.com/eJR9Lpq.jpg


 
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Old 07-31-20, 11:09 PM
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Your using it, if a belt sander with a heavy grit paper doesn't sand that down, nothing will!
 
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Old 08-01-20, 12:46 AM
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There must be some sort of circular sander for this type of job.
 
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Old 08-01-20, 03:38 AM
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You could sand out the grooves [and paint] with either a belt sander or 7" sander/grinder. If you want to leave the grooves you'd need to use a chemical stripper.
 
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Old 08-01-20, 03:54 AM
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Or use those "sponge" type sanding blocks that conform to the profile of the work piece.
 
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Old 08-01-20, 06:57 AM
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If you thought a belt sander was slow, any other sander will be much slower. A belt sander is likely the best tool to use because you need to flatten those grooves, not detail sand each one. Change the grit to have the intended effect. 36/40 grit is aggresive, higher grits remove scratches. Finishing with 80 and 120 are probably as high as you need to go if it's getting painted.
 
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Old 08-01-20, 07:47 AM
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So that is suppose to be smooth piece? To me it looked like it was scalloped to be that way. Maybe the picture was too close up.
 
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Old 08-01-20, 08:18 AM
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A pic from further back would be nice. I assume it's just a severely weathered piece of wood.
 
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Old 08-01-20, 10:07 AM
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Yes it is "scalloped". I don't need to scrape off 100% of it. I just want paint to grab onto something solid.
I'm thinking a plain old wire brush might work good enough. This is a beam that runs the span of a patio cover (seen in one of my other posts). This side of the beam will not even be visible, so it doesn't have to be perfect.
 
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Old 08-01-20, 10:46 AM
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I see. You can use a wire brush, or they make wire brushes and paint strippers that you can put on a drill.
 
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Old 08-01-20, 11:29 AM
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Tried just a hand held wire brush. Not really cutting it. I need some sort of sold scraper with teeth.
 
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Old 08-01-20, 11:42 AM
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Try a grinder with a wire wheel or wire brush. Be sure to use proper PPE! It will throw a lot of debris. They can be VERY aggressive.

Wire wheel: https://www.harborfreight.com/4-1-2-...eel-91282.html

https://www.harborfreight.com/5-inch...eel-66975.html

Wire cup: https://www.harborfreight.com/3-inch...ush-47927.html

https://www.harborfreight.com/4-in-c...ush-60321.html
 
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Old 08-06-20, 11:31 AM
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I got some sanding belts with the highest coarseness. This seems to work the best.
 
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