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Forum topic by Karda posted 09-15-2021 07:15 AM 766 views 0 times favorited 30 replies Add to Favorites Watch
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Karda

3364 posts in 1770 days


09-15-2021 07:15 AM

If it were not for tenons I would have fun woodturning. If i ruin a turning it is usually removing the tenon. When I turn towards the center I get a lot of noise and vibration and I never am able to flaten the center I always have a high spot. That where I ruin the bowl


30 replies so far

View NoWhiskeyWoodworking's profile

NoWhiskeyWoodworking

71 posts in 15 days


#1 posted 09-15-2021 02:57 PM

Not sure if this article helps or not. (I don’t turn, so I might be sharing something really basic)

But I’m trying…

https://turnawoodbowl.com/wood-bowl-tenon-removal-3-easy-ways/

-- Van "If you're looking for perfection, don't look here."

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TheDane

6007 posts in 4879 days


#2 posted 09-15-2021 04:49 PM

That where I ruin the bowl

Have you looked at Jerry Marcentel’s Tail Stock Steady?

-- Gerry -- "I don't plan to ever really grow up ... I'm just going to learn how to act in public!"

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Karda

3364 posts in 1770 days


#3 posted 09-15-2021 07:50 PM

I have Jerrys steady, this is not a holding issue this is the tool. I have the same problems with the steady. I didn’t have the vibration issue until recently, I have always had a high center problem. I may go back to a recess except I can’t use them on first turned bowlsa

#4 posted 09-16-2021 04:26 PM

When you say you “ruin the bowl” do you mean because it won’t sit flat when you’re done? If that’s the case, it may be the way you are creating the tenon in the first place. I like to create the base (which is not the bottom) of the bowl with the tenon surrounded by a recessed area. When I remove the tenon, I only need to remove enough of it to make sure it is lower than the base. If you need a link to a video, let me know.

-- Living In The Woods Of Beautiful Bonney Lake, Washington

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Karda

3364 posts in 1770 days


#5 posted 09-16-2021 06:22 PM

Hi, Phill I know how you do your tenons, I watch your videos, a lot. I am going to try your method of tenons buy I always forget. Right now I am more worried about the vibration and the noise, I can’t figure it out and it is new. What am I doing wrong. I had the opportunity to show a very experienced turn what is happening but i forgot to ask. Now it back to dumb old me

View drsurfrat's profile

drsurfrat

982 posts in 402 days


#6 posted 09-16-2021 07:53 PM

Maybe it might be that the tailstock is cranked in too hard. It puts everything under high stress, and that might cause a vibration against the friction fit against your inside-the-bowl piece – IF that is how you do the final tenon removal. It has happened to me. Maybe back off the tiniest bit, or change the pad inside to something more compliant, even a sheet of silicone rubber…

On a completely different note, I often turn the bowl mounted to a face plate the whole time when there is enough wood or when I can glue on a sacrificial block. Then I turn inside and out without ever remounting. After sanding, I use a parting tool to cut away the bowl with a little angle inward so that there is a recess. I part down to about 1/2” if the wood is good, saw it off, then just clean it up with a gouge.

Hope this helps, sorry if it doesn’t

-- Mike (near Boston) ... Laziness is the mother of invention, necessity is the mother of exhaustion - me

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Karda

3364 posts in 1770 days


#7 posted 09-16-2021 08:41 PM

I never tried turning complete bowl from a glue block I’ll have to try that thanks

View hairy's profile

hairy

3297 posts in 4748 days


#8 posted 09-16-2021 11:03 PM

Have you considered a doughnut chuck?

-- there's someone in my head but it's not me...

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Karda

3364 posts in 1770 days


#9 posted 09-16-2021 11:13 PM

no

View Nubsnstubs's profile

Nubsnstubs

1799 posts in 2946 days


#10 posted 09-17-2021 02:42 AM



no

- Karda


Don’t…............ Jerry (in Tucson) Period!!!!!!

-- Jerry (in Tucson) www.woodturnerstools.com

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Nubsnstubs

1799 posts in 2946 days


#11 posted 09-17-2021 02:43 AM


Have you considered a doughnut chuck?

- hairy


Don’t…........ (Jerry (in Tucson) Period!!!!!

-- Jerry (in Tucson) www.woodturnerstools.com

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Karda

3364 posts in 1770 days


#12 posted 09-17-2021 03:08 AM

don’t worry I won’t I like to keep things simple

#13 posted 09-17-2021 06:21 PM



Hi, Phill I know how you do your tenons, I watch your videos, a lot. I am going to try your method of tenons buy I always forget. Right now I am more worried about the vibration and the noise, I can t figure it out and it is new. What am I doing wrong. I had the opportunity to show a very experienced turn what is happening but i forgot to ask. Now it back to dumb old me

- Karda

It may be your tool rest height. I experience a little of what you are talking about if I don’t have my tool rest high enough. Then it’s chisel angle may be the culprit. Go slow, there’s no rush. It’ll come!

-- Living In The Woods Of Beautiful Bonney Lake, Washington

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Karda

3364 posts in 1770 days


#14 posted 09-17-2021 06:37 PM

its hard to go slow when the wood is screeching at me, make me want to rush to stop the noise. Where do I want my cutting edge right on center or other. I’ll try that when i get some practice wood to turn

View OSU55's profile

OSU55

2821 posts in 3205 days


#15 posted 09-17-2021 06:56 PM

You may be running too low rpm. I use jam chucks – various sizes – that fit the bowl ID. I make sure the tenon has the original live center spot from when the tenon was formed. A thin 1/16” piece of leather is the best cushion. I just put the point of the live center into the original center hole, and tighten until there is sufficient friction to keep the bowl turning. Depending on bowl size I run 750-1000 rpm for tenon removal, using light cuts. No tail steady or other special tools required. Some of the bowls are only 1/8” wall.

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