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Using a scraper to finish equalivent Grit rating?

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Forum topic by robscastle posted 08-13-2014 12:12 AM 510 views 0 times favorited 6 replies Add to Favorites Watch
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robscastle

1745 posts in 869 days


08-13-2014 12:12 AM

I was using my scraper on some QLD Walnut and I found the scraper produced what looked like it was a higher equilavent grit to the 1200G I was using.

I the did a couple of tests to follow up my curosity to see if I could find out the answer myself

Shot No 1 using surface refelection as a gauge Timber on the left is Jarrah.

Shot No 2 using surface refelection as a gauge Timber on the right is Pine.

Surprisingly The results displayed something less than 1200 G if you used the refelection method as a reference

Using the calibrated finger the 1200 felt smoother than the scraper.

So is there and answer to this puzzle?

-- Regards Robert


6 replies so far

View TheWoodenOyster's profile

TheWoodenOyster

898 posts in 600 days


#1 posted 08-13-2014 12:18 AM

I’ve always felt like scrapers were in the 150 grit range. I’m sure they act differently on different woods and it depends on how well you have them tuned up and how good you are at scraping. I’d say I’m average and my scrapers are tuned pretty average as well.

-- The Wood Is Your Oyster

View Clint Searl's profile

Clint Searl

1465 posts in 1026 days


#2 posted 08-13-2014 12:56 AM

What difference does it make?

-- Clint Searl....Ya can no more do what ya don't know how than ya can git back from where ya ain't been

View Joshua Oehler's profile

Joshua Oehler

111 posts in 356 days


#3 posted 08-13-2014 12:58 AM

I would have to agree with it all depends on how well it’s tuned and also it’s controller. I am still trying to get the hang of using a scrapper. I just recently purchased one and being new to it me and my scrapper can probably be outdone by a piece of 80 grit. Put that same scrapper in the hands of an experienced wood worker and the quality probably couldn’t be matched by a piece of sandpaper. I would say this is true for any hand tool that requires some kind of tuned/honed edge. I would also agree that different woods would respond different. I would say there is no magical formula for this except for figuring out what works for you just like you have done. You know what you can do with your tool the way you tune it.

-- - "But old news can change, as memories float downstream. So don't judge me by my failures, only by my dreams"

View TheFridge's profile

TheFridge

845 posts in 151 days


#4 posted 08-13-2014 01:50 AM

I skewed my scraper before I bought a low angle block plane and I sanded afterwards just to make myself feel better not because it needed it. That and I wanted to get rid of some Home Depot sand paper.

-- "We build our workshops. Then we enjoy the fruits of our labor by laboring for more fruits." - Me

View Paul Maurer's profile

Paul Maurer

136 posts in 219 days


#5 posted 08-13-2014 06:55 AM

Apples and oranges
a card scraper can take a 60 grit bite and leave a knife clean cut.

-- Psalm 62: 11 Once God has spoken; twice have I heard this: that power belongs to God, 12 and steadfast love belongs to you, O Lord. For you repay to all according to their work

View David Dean's profile

David Dean

524 posts in 1564 days


#6 posted 08-14-2014 10:11 AM

cool.

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