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Thread: Lie Nielsen 112 Scraper Plane
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5th January 2019, 09:13 AM #1GOLD MEMBER
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Lie Nielsen 112 Scraper Plane
For Christmas I received a Lie Nielsen 112 Scraper Plane. After learning to use the chip-breaker on my smoothing plane I haven't had any issues with tear-out, but I would occasionally get dull spots on areas of vertical/reverse grain and did suffer some small tear-out on figured Mulga (super hard native - similar to Gidgee). In any case, despite several people advocating that Scraper planes are rather un-necessary I couldn't shake the feeling that I wanted to see how useful or useless they really are for myself.
First up, I sharpened the thick blade to 8000 and tried it without turning a burr. I set the frog angle equal to the angle that gave best results by hand. I didn't like it. It left a rough finish and I actually got tear-out on some quilted blackwood that my #4 with close-set chip-breaker managed ok.
I then turned a hook at 30 deg (I had read this somewhere - I don't remember where now) at again, was rather disappointed. I was getting shavings from the plane, however it would still leave a rough feeling surface on Blackwood, Walnut, Celery Top Pine and Tassie Oak, and I still got tear-out on figured Blackwood. I did get very good results vs a smoothing plane on some figured Mulga however. In fact it left a smooth tear-out free surface on the Mulga, whereas my #4 was creating tear-out on this piece. I resharpened and re-turned a hook a few times and got eh same results each time.
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Blackwood
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Mulga (cleaning up tear-out from the smoother - some still visible)
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Mulga
I then actually watched the Lie Nielsen Youtube instructional video and subsequently resharpened the blade and turned the hook at 90 degrees. Success! The scraper now left a nice smooth, clear, surface on Walnut, Tassie Oak, Celery Top Pine and Blackwood, with no tearout at all with or against the grain. Surprisingly, however, it now did not work as well on the piece of Mulga that it was doing a great job on with the hook at 30 degrees. I assume from this very brief initial playing around that a different angle of the hook is required for optimal results on different timber? That is, much harder timber would benefit from a lower hook angle (which would actually present as a higher cutting angle) and softer species benefit from a hook turned at a higher angle (which would present to the timber as a lower cutting angle) - this makes sense intuitively, however I'm not sure if this is actually the case in practice - I'll need to play with it a lot more.
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Tassie Oak Shavings
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Walnut, Blackwood and Celery Shavings
Cheers,
Dom
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5th January 2019 09:13 AM # ADSGoogle Adsense Advertisement
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8th January 2019, 04:51 PM #2SENIOR MEMBER
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Interesting results - I had a similar experience with a HNT Gordon smoother last night. The HNTG's are all high angle bevel down, in this case it would plane hard spotted gum without issue but was leaving a rough surface on the much softer Surian cedar inlay (I think it's Surian). I would hazard a guess that it has something to do with the strength and elasticity of the wood fibres that determines what angle works best. But I could just be a newbie talking out my pooter
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8th January 2019, 07:24 PM #3
Some interesting & useful observations, Dom. I have LV's interpretation of the 112 which I bought about the time they started offering the thick blades, but decided to go with the 'thin' one. The Veritas has an extra bit that the original & the LN don't have, a 'bowing' screw to put a bow in the blade. There is one on the 80, so it puzzles me why they didn't bother on the 112. Anyway, the point to be made is that having a blade that can be bowed makes it quite a different animal to use, because it allows you to easily vary the depth of cut. I suspect any observations pertaining to my '112' wouldn't be all that relevant to your version, but for the record, I use about an 80 degree hook, probably a bit more forward lean than it looks like you're using, and more or less bow depending on how aggressively I want it to cut.
I'm impressed by your shavings, they look to be at least a couple of thou. thick. I would struggle to get such thick shavings from the hard woods I usually use my scraper on, something less than a thou would be typical of what I'd get. I mostly use mine on really nasty, hard, no-two-fibres-going-in-the-same-direction woods that defeat my planes no matter how I set them up. I can usually persuade softer woods like Blackwood & Walnut to finish satisfactorily with either a standard angle, or one of my high-angle planes, but have had to resort to a scraper for a few softer woods like some very wild-grained N.G. Rosewood that tore out even with my very best smoother. I concur that you have to muck about a bit with different woods to find the sweet spots for amount of hook and attack angles. It's very satisfying when it all comes together and wide gossamer spew out, while the surface of the wood grows smoother & smoother.
They sure save on sandpaper.......
Cheers,IW
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9th January 2019, 01:52 PM #4GOLD MEMBER
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I make my own scrapers for what little that I need to do with carvings in hardwoods.
Yours looks set to take an almighty bite, by the shavings. Just kiss off the top.
Sandpapers always shred wood. They can do nothing else.
Scrapers cut the surface. When you mess with them to cut thin with no tear-out,
they sure do a fine finishing job.
Thanks for all your process pictures. Much appreciated.
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9th January 2019, 03:45 PM #5
I picked up a Sweetheart era Stanley 112 a few years ago and I love it, I used it on my massive redgum kitchen benchtop after the initial flattening and smoothing with handplanes.
I did a lot of research on the plane before touching the blade, and I also found it was the LN video on youtube on sharpening and setting up the LN112 that gave me the best advice for me.Nothing succeeds like a budgie without a beak.
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