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Wet shear scraping

I was turning a bowl this afternoon from a piece of fruit wood (in the basement for >20 years and species unknown). I shear scraped the outside and got an generally good finish but there were some areas of fine tear-out that even light shear cuts would not remove. So I thoroughly wetted the surface to make the fibres swell in those areas and then gave a light shear-scrape while it was still wet. The waste was mostly in the form of a slurry rather than shavings and the finish was superb over the tricky areas. Graham

Reply to
graham
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Interesting results. I would have thought that there would be more tear.

I have some very old oak - fine grain white oak and I want to see how it works. Oak is normally open grain and tears... If it does, I'll try this trick.

Mart> I was turning a bowl this afternoon from a piece of fruit wood (in the

Reply to
Martin Eastburn

I will have to try this. Tear out has been a constant problem for me, even with shear scraping.

Reply to
Dr. Deb

I use a home-made shear scraper that I made about 20 years ago, shown below:

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The handle is not shown.

on the end. I drilled and tapped it for 10-32 machine screws, the type used in Sorby/Stewart deep hollowing system that I've owned for >20 years. Note that the newer models might be metric. I use the Sorby tear-drop scraper (RS200C or RS222) that, in this instance, measures 1.25" along the straight edge. I used the straight edge for the outside of the bowl and obviously the curved part on the inside. Sorby sells a shear scraper using round stock so that you can vary the angle of shear. I prefer the support that the square section resting on the tool rest gives me - it's one less thing to think about while taking delicate cuts. Graham

Reply to
graham

I can't bring the image up.

Reply to
G. Ross

Never mind. I re-opened my browser and it brought it up first try. Looks like a good tool to have.

Reply to
G. Ross

Graham

Reply to
graham

most of what i know i have learned on my own one of the first pieces i turned was a piece of driftwood

i call these kinds the survivors they are typically very dense and old and resisted worms and all the other usual maladies from floating in salt water

but i recall this same kind of tear out occurs with some of it so i will try this technique out on one of these pieces next time

seems like a simple solution and that is why i like it

Reply to
Electric Comet

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