George Vondriska

Carving a Pine End Grain Bowl

George Vondriska
Duration:   7  mins

Description

Power carving is such a blast! I love the way you can work with the shape of the blank you’re starting with to create an organic shape in the final result. Arbortech has been in the power carving world for a long time. Their new Turbo Scraper is crazy cool. It’s a 4” diameter multi-wing cutter that uses three carbide cutters to do the work.

Negative rake

The really big deal with the carbide cutters is their negative rake. This helps give you better control over the tool, and provides a better surface finish. You can really see this on the end grain pine bowl I’m carving in this video. Let’s do everything we can to minimize sanding. That starts with getting the best possible finish off the cutter, and the Turbo Scraper excels at that. When the cutters get dull just rotate them to a fresh edge, or replace them.

It’s like a cabinet scraper

If you’ve used a card or cabinet scraper in your shop you’re already familiar with this technology. Scrapers are commonly used on woods that might otherwise tear out such as woods with curly or birdseye grain. The Turbo Scraper works in a similar way and provides the same benefits.

Big stuff and little stuff

The large end grain bowl is a great example of where the Turbo Scraper excels, but it’s also great for smaller scale items like spoon bowls. Bowl calipers give you a great way to monitor wall thickness as you’re making your cuts.

More info

Arbortech has a number of power carving tools. Check out the WWGOA videos on their products. You can also visit the company’s website for more information.

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2 Responses to “Carving a Pine End Grain Bowl”

  1. George Vondriska

    I'm holding the piece in this device https://amzn.to/4ctUKOp To carve the bottom of the bowl I screw a board to the top and grab onto that board with the vise. The screw holes go away when you hollow the interior. When I flip it over to do the inside I use hot glue to fasten the board to the finished bottom. You can release the hot melt glue when the project is done.

  2. rl2thdr

    Can you explain how you claamped the piece when cutting both outside and inside? Also, what is that clamping device you are using that sits on the floor? Never seen that. Thanks

I am having so much fun with this chunk of wood that is a really dynamic piece of pie. And I can't believe how beautiful it is. I'm carving it out using Arbor Text Turbo scraper. This is a really cool tool. Now, before I talk too much about it, let's talk about the bowl. I didn't just start this right now. I did some work before you got here working on the outside, working on the inside. So let's have a look at what it took to get to this point. Here's the 20 inch diameter piece of pine. I started with a little over four inches thick. I love the outside shape on this log and I really want to keep that shape. I'm using the turbo scraper on the back of this bowl. First, I'm leaving a flat spot in the middle where it'll sit on the table and working on tapering down toward those cool lobed edges. Look at the amazing color that's being exposed so far, so good. Next, I put the sanding pad on the power carving unit and I start working on ferring the curve and taking out any tooling marks. I have as you would with any woodworking project, I'm taking this through a progression of grits with the back of the bowl done. It's time to start hollowing the inside. I'm back to the turbo scraper for this. And what I'd like to do is create a recess in the middle and basically create a bowl shape by making that recess bigger and bigger and bigger. Remember, this is all end grain I'm cutting and this is where the negative rate cutters really shine, removing all this material without tearing the heck out of that end grain. So let's talk about that turbo scraper. Here's what we've got going. These are carbides. So one benefit to that is that when a part of the cutter gets dull, all we have to do is loosen the bolt, turn it to a fresh edge, you're back in business. They're also negative rake. And it's a really big deal, especially in this application. You saw that stump. So the tree was growing this way, that means everything I'm cutting here and grain and grain. This is a bunch of soda straws coming straight at my face right now. So when we look at just the attributes of wood and its propensity to chip or tear, we know end grain is more difficult to cut effectively than long grain. So with a negative rate cutter like we have on the turbo scraper, it really excels at being able to work that end grain and keep it nice so that we don't have boatloads of sanding to do on this later. The other thing I really like about it is just the ease of control. It's very, very easy to manage your depth of cut, to manage the cut. You're making the shape you're creating. And that's a great way to make sure that you're getting the carving you want out of the work that you're doing a neat attribute of this cutter is when you look at the way it's made, we've got these wings. So one of the things that's cool about that is I can look through the cutter as I'm working and I can see my work. So let's check out that particular feature. So as I'm cutting, just watch for that space in between the cutter and the next cutter. Like I said, you'll be able to see through, so you can really see your work and then look too at that amazing surface finish in the pine and how smooth that is. Like I said earlier, very little sanding when we're done with this. Thanks to that negative rake on the end grain. So one way to think about the turbo scraper is it's very similar to what we would do with a hand scraper and a hand scraper is a tool you're gonna use on burls, curly material, birds, eye material to get a really good cut quality. Same thing here, we're emulating that type of cut with the turbo scraper. Now, obviously, one thing I can do with that is clear out a lot of wood like I'm doing on this big ball. But another application is an spoon work and dishing out that spoon because of the way the turbo scraper can get used on edge like that. Let me p pe up and I'll show you what a lovely cheat that is for making spoons that took that ball out so quickly, my job at this point is to go back to this, I've got some more material to take out so that it, it's a little more bow like. So I'm just gonna go back to the scraper. Keep on cutting pine out in order to finish up that pine bowl, I stuck with the turbo scraper and got a lot more material out of there really working down the wall thickness. And the way I monitor the wall thickness is by using bowl calipers. Once I was done with the Turbo scraper, then I switched to a sanding head and like you'd always do start with courts work your way up till fine. Once the sanding was done, best part of most projects getting finish on there and really seeing that beautiful wood grain pot. I love how it came out. I am really happy with this project. I love the pine and I love the way that the turbo scraper worked on this, that negative rake tool was really beneficial because of all the end grain that I was constantly working against. It really minimized the sanding time because it minimized the tear out and chipping. It was really a great choice for this piece of pie.
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