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IPE burns/black spot after belt sander usage

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Forum topic by Lemarin posted 10-15-2015 01:45 AM 534 views 0 times favorited 4 replies Add to Favorites Watch
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Lemarin

2 posts in 422 days


10-15-2015 01:45 AM

Hello,

I am building a small IPE deck (10×12).

I was using orbital sander, but my neighbor wanted to save me time and gave his belt sander, i used maximum speed with 80 grit. after finishing the sanding, I release that there is black spot all over the 5/4”x6”x12ft i used belt sander on, but not on the 5/4”x6”x12ft i used orbital sander on. my guess is that the top layer burner because of high velocity and much pressure i applied on the IPE 5/4”x6”x12ft.

I would like your help guys to correct black spot on the IPE deck ( I think it is wood burns black spot ), any help is much appreciated.

Thank you


4 replies so far

View Dark_Lightning's profile

Dark_Lightning

2635 posts in 2574 days


#1 posted 10-15-2015 02:25 AM

Pitch and oil have caused the burning, when combined with what you called “high pressure”. You will have to sand it carefully with clean sandpaper (you could still use the belt sander, but with a new belt), but you will need to use less pressure and keep the tool moving to avoid building up heat and having the problem repeat itself. What does the old belt look like?

-- Random Orbital Nailer

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Lemarin

2 posts in 422 days


#2 posted 10-16-2015 05:48 PM

the beslt is not a problem, i bought 5 new belt to use and changed one already. so additional sanding will solve this problem. I user orbital Dewalt sander (small) to try to sand out the burned wood, but was unsuccesful. I guess i need a better sander. I will not use any longer the belt sander, i am definitively not good at.

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Ripthorn

1406 posts in 2451 days


#3 posted 10-16-2015 06:15 PM

The problem is that Ipe is wicked hard, burns like crazy, and must be handled with care. You can’t bear down on it with tools and not get burns. It will burn if you look at it cross eyed. What you need to do is use lighter pressure. It’s going to go slower. Ipe is just so hard that that is all you can do if you wish to avoid burns. If you need to hog off more material get a better belt with lower grit. If you must hog, go for a 24 grit alumina zirconia belt.

-- Brian T. - Exact science is not an exact science

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bondogaposis

4035 posts in 1817 days


#4 posted 10-16-2015 06:37 PM

Clean up the burn marks w/ card scraper.

-- Bondo Gaposis

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