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Forum topic by Karda posted 07-22-2019 07:56 PM 335 views 0 times favorited 16 replies Add to Favorites Watch
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Karda

1611 posts in 1001 days


07-22-2019 07:56 PM

I have a Sorby 3/8ths bowl gouge I want to rehandle. Does any body know what size hole I would need. The gouge is the same as an American 1/2 inch thanks


16 replies so far

View LeeMills's profile

LeeMills

675 posts in 1748 days


#1 posted 07-22-2019 09:57 PM

Should be a 1/2” hole. I would drill a hole in a piece of scrap to check before drilling the handle.

-- We cannot solve our problems with the same thinking we used when we created them. Albert Einstein

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Karda

1611 posts in 1001 days


#2 posted 07-22-2019 10:22 PM

does it step down at the tang, my 5/8th gouges have a 1/2 inch tang. I don’t want to take off the handle till I have the right hole drilled, at least if I don’t have to thanks Mike

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Nubsnstubs

1588 posts in 2177 days


#3 posted 07-23-2019 01:15 PM



Should be a 1/2” hole. I would drill a hole in a piece of scrap to check before drilling the handle.

- LeeMills


Lee, would you like to explain why Mike would need a 1/2” hole for a 3/8’ shaft…...

Mike, if your shaft is 3/8”, you should drill a 3/8” hole about 2” deep. Apply a little epoxy of some sort inside the hole at the top, and push or use a clamp to bottom out the shaft into the hole. ............... Jerry (in Tucson)

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

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Lazyman

3661 posts in 1835 days


#4 posted 07-23-2019 01:43 PM

Most bowl gouges are milled from a straight rod so the width where it enters the current handle should be the same all the way to the end. You may want to remove it from the handle before you completely finish drilling the hole just so you know how deep the hole is, assuming you want to set it at the same depth.

If I remember correctly, the English made gouge measurements are given as the width of the flute, not the width of the shaft so they would use a 1/2” to make a 3/8” gouge. Measure carefully to make sure that it is not a metric size. If is is actually 12mm for example, a 1/2 hole might be a little too big.

-- Nathan, TX -- Hire the lazy man. He may not do as much work but that's because he will find a better way.

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LeeMills

675 posts in 1748 days


#5 posted 07-23-2019 01:56 PM


Lee, would you like to explain why Mike would need a 1/2” hole for a 3/8 shaft…...
- Nubsnstubs

As Lazyman explained, UK made bowl gouges (not spindle gouges) are sized differently from the rest of the world.
Size of the bar is 1/8” larger than the stated gouge size. A 3/8 Sorby would be 1/2 bar; a 1/2 Sorby would be 5/8 bar.

-- We cannot solve our problems with the same thinking we used when we created them. Albert Einstein

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Nubsnstubs

1588 posts in 2177 days


#6 posted 07-23-2019 02:06 PM


Lee, would you like to explain why Mike would need a 1/2” hole for a 3/8 shaft…...
- Nubsnstubs

As Lazyman explained, UK made bowl gouges (not spindle gouges) are sized differently from the rest of the world.
Size of the bar is 1/8” larger than the stated gouge size. A 3/8 Sorby would be 1/2 bar; a 1/2 Sorby would be 5/8 bar.

- LeeMills


Thanks, Lee, I was just keeping you on your toes.

Anyway Mike, all my gouges and other turning chisels I have are embedded about 2” deep. That’s your depth you probably need…........ Jerry (in Tucson)

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

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Karda

1611 posts in 1001 days


#7 posted 07-23-2019 03:50 PM

thanks , I got the size difference. My concern is the tang, My P&N is stepped down to 1/2 inch and so is my BB. I don’t want to happen with my sorby. If i drill the wrong size hole the blank is toast. I did drill a 1/2 inch hole in a cut of from the blank. The hole is a hair to small. How can I get the handle off with out cutting it off

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TheDane

5665 posts in 4110 days


#8 posted 07-24-2019 12:52 AM

How can I get the handle off with out cutting it off

Clamp the steel in a vise and use a block of wood to whack it with a mallet. I don’t know about Sorby, but many tool manufacturers don’t use glue or epoxy … the tool steel is just pressed into the hole in the handle.

-- 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

1611 posts in 1001 days


#9 posted 07-24-2019 03:02 AM

all I have is a work mate, I’ll try that

View OSU55's profile

OSU55

2380 posts in 2437 days


#10 posted 07-24-2019 12:16 PM

Applying a little heat with a torch can help handle removal, glue or not.

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Karda

1611 posts in 1001 days


#11 posted 07-24-2019 02:51 PM

never thought of heat, couldn’t drive it off so I cut it off. tang is larger than shaft. The flute is a fractin of a millimeter smaller than the tang. My .5” drill is 12.6MM the tanh is 13MM

View Mosquito's profile

Mosquito

9804 posts in 2739 days


#12 posted 07-24-2019 04:39 PM

Do you happen to have pictures by chance? I’ve thought about re-handling my Sorby bowl gouges as well, so I’m curious.

So the shaft is about 1/2” in diameter, and the tang is 13mm? That’s an interesting approach by Sorby, I would have thought they’d just do 1/2” rod for the whole thing, or 13mm for the whole thing. Seems expensive to take a 13mm bar and turn it down to 1/2”...

And was the 13mm tang the whole section inside the handle (including the ferrule)?

-- Mos - Twin Cities, MN - http://www.youtube.com/MosquitoMods - http://www.TheModsquito.com

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Karda

1611 posts in 1001 days


#13 posted 07-24-2019 10:27 PM

Hi, this time I zeroed my calipers. The full length of the shaft is 13MM. So my drill is less than a MM smaller than shaft. i can live with that. But if you has a 13 MM drill bit that would make the job easier.

View TheDane's profile

TheDane

5665 posts in 4110 days


#14 posted 07-25-2019 12:30 AM

Length? Do you mean diameter?

If the shaft is 13mm, you need a 13mm drill.

-- 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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Mosquito

9804 posts in 2739 days


#15 posted 07-25-2019 12:48 AM

he means over the entire length, it’s 13mm in diameter

Thanks for the follow up Karda

-- Mos - Twin Cities, MN - http://www.youtube.com/MosquitoMods - http://www.TheModsquito.com

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