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Forum topic by Harryn posted 01-22-2020 05:46 PM 225 views 0 times favorited 4 replies Add to Favorites Watch
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Harryn

84 posts in 3228 days


01-22-2020 05:46 PM

How best to see planer marks when sanding or scraping.


4 replies so far

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SMP

1792 posts in 545 days


#1 posted 01-22-2020 06:04 PM

Hand plane or machine plane?

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therealSteveN

4906 posts in 1214 days


#2 posted 01-22-2020 06:20 PM

To locate any kind of flaw on woods surface I just hold it to a light so the light glances off. Sometimes you need to turn your wrist a time or 3 to get it just right, but once identified it works like a magnifying glass to show scratches, defects, and whatnot so you know to keep sanding, or that it is ready for finish.

Wetting a wood surface raises the grain at least one time, but it can also help highlight really fine scratches, especially if done in concert with the glancing light above.

-- Think safe, be safe

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PPK

1670 posts in 1449 days


#3 posted 01-22-2020 06:23 PM


To locate any kind of flaw on woods surface I just hold it to a light so the light glances off. Sometimes you need to turn your wrist a time or 3 to get it just right, but once identified it works like a magnifying glass to show scratches, defects, and whatnot so you know to keep sanding, or that it is ready for finish.

Wetting a wood surface raises the grain at least one time, but it can also help highlight really fine scratches, especially if done in concert with the glancing light above.

- therealSteveN


+1.

I’d also add that your hand can be a good indicator of ridges/snipe/imperfections. I find that I can feel planer marks more than I can see them often.

-- Pete

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CaptainKlutz

2466 posts in 2134 days


#4 posted 01-22-2020 11:06 PM

+1 above comments

Wiping down surface with mineral spirits is how I check for things I missed with my hands/eyes.
As the MS evaporates, any torn fibers or edges from planer will dry differently and jump out quickly to naked eye.
Once you see them, will know which way to rub my hand to feel them.

Water raises the grain and creates compounding issues. I use alcohol/acetone NGR blend for my dye stains, and keep bottle on hand most time. Works well to highlight defects like MS, but evaporates way to quickly in warm temperatures.

YMMV

-- I'm an engineer not a woodworker, but I can randomly find useful tools and furniture inside a pile of lumber!

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