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-   -   Scooping a chair seat (https://www.woodworkingtalk.com/f2/scooping-chair-seat-122930/)

Quickstep 01-22-2016 07:56 PM

Scooping a chair seat
I'm considering having a go at building a chair for playing guitar. The seat would be triangular and slightly scooped in the middle. Everything I've seen online is either a skilled artisan (the guy carved a seat in 5 minutes), or someone using an angle grinder (seems like that could get away from you real easy). What should a beginner use? I don't mind if it takes a while.

Steve Neul 01-22-2016 08:55 PM

There are places you can get a wheel for a angle grinder that has what looks like a chain saw blade around the edge. That would probably be the easiest way to do that. Unless you have some wood carving chisels it would be cheaper too. By the time you spent 15-20 bucks for a gouge you could buy one of those wheels. I've seen the wheels at Harbor Freight too.

Quickstep 01-22-2016 10:26 PM

Thanks Steve. I saw videos of guys using a wheel like that. Looked scary. My angle grinder spins at 11,000 rpm. Seemed like it would be at gut level or crotch level while you're grinding. Like I said, looked scary. How hard is it to control that setup?

regesullivan 01-22-2016 11:32 PM

if you want to use your angle grinder try one of these, http://www.amazon.com/Holey-Galahad-...asp+disc&psc=1

Tennessee Tim 01-22-2016 11:36 PM

Safer with sanding pads/wheels at multiple grits. I cut mine with 50, 80,120,220 on a 7" disc grinder. It can be done on the smaller high speed one like you have. IF it's a real hard wood like maple you may start at around a 25 grit.

I agree with you the saw teeth and "privates" level don't even sound safe....and yes they can grab if not very carefully handled.

Good luck and post pics of project!!

GeorgeC 01-23-2016 07:53 AM

I have used a 4 1/2 inch angle grinder a couple of times to scoop a chair seat. No problem with it getting away from me in that application. (I did have it get away from me once when using it to sand the powered deck list struts on a boat. It hit something solid and yanked it right out of my hand. I still have the scar on the bicep of my right arm to prove it.)

Just use sanding wheels of varying grit as above.


Pirate 01-23-2016 05:28 PM

I used my ras to scoop a small seat.

GeorgeC 01-23-2016 05:34 PM


Originally Posted by Pirate (Post 1242650)
I used my ras to scoop a small seat.

That sounds dangerous. How did you do it?


Brian T. 01-23-2016 05:57 PM

If you ever plan to buy a King Arthur Launcelot blade for your angle grinder, think twice. It is a ferocious tool, best used outdoors. The Log Wizard might be a little tamer. Google each to see some YouToobs.
Lee Valley has some useful tools = inshave and curved drawknife. I've seen it done with wood carver's gouges. Start with a 30oz mallet and a 9/15 or so, then a 5/35 then a 2/30 and a handful of cabinet scrapers.

I notice that most wooden chair seats are glue-ups, very carefully chosen wood quality and grain direction. Just getting that organized would take me the longest time.

Pirate 01-23-2016 07:23 PM

I put a pivot pin in the table and underside of seat. With the saw carriage locked with the blade over the center of the seat, I lowered the blade to take a very thin cut. Then rotated the seat. I lowered the blade after each revolution of the seat.
Then I moved the saw carriage closer to the ras post and locked in position. Made numerous small cuts, as I rotated the seat. This made the scooped are bigger.
You can also swing the saw arm, to make an arc cut.
I got the idea from an old Craftsman ras manual, which shows cutting a shallow bowl the same way.
I'm not getting into the pinless freehand method!

Tennessee Tim 01-23-2016 08:17 PM


Originally Posted by Pirate (Post 1242786)
I'm not getting into the pinless freehand method!

That sounds more like a "finger-less" method without the pin and hard to get blood off wood :eek: :blink: :huh:
I just shutter thinking of someone attempting pinless freehand.

Pop Pop 01-23-2016 08:23 PM

I would use a Scorp.

GeorgeC 01-23-2016 08:58 PM

What is a "Scorp?"


Pop Pop 01-23-2016 09:35 PM

1 Attachment(s)
It is a hand tool. Think of a curved draw knife.

Brian T. 01-24-2016 12:11 AM

Just that your whole life will change, learning to sharpen that puppy to get it to glide in the wood.
I didn't mention the trendy names in post#9.
But like Pop Pop shows, they are a dream to carve with. Every surface is at your control.

Me? I'd use an elbow adze, then a D adze then a couple of crooked knives to finish the job. I confess that I can see this done with a few of the common carving tools in my Pacific Northwest.

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